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| When working with electronics, you always need one basic thing; power. This power supply is great for powering all kinds of electronic projects. It produces a well filtered, variable 1.2-30 volts at 5 amps. It is easy to build and the parts are realitively easy to find. |
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| can i used 24 v 10 amp transformer with this circuit. | ||
| I have made this successfully but i did some changes by using LM350T volt Regulator and 10k pot . | ||
| Hello again. I commented on this LM338K-based power supply. back in 2008 when I built a dual version for my G-Scale Model Railroad. It's still working great with no problems! It's great circuit. It's very stable and easily puts out 5 amps at up to 30 volts. The amperage has been checked with a DC clamp meter and suitable dummy load. Thanks again. I really like your website here, too. Regards. | ||
| Hello, I've never wired up anything, but as a working tattoo artist, have run across the need to. What I am looking to build is a power supply with a 3 way toggle that could run 3 separate tattoo machines, one at a time. Preferably 0-18v @ 2a. Could someone please help me come up with a parts list and wiring diagram for something like this? It would be much appreciated. Thanks in advance! | ||
| I want to build a power suplly inwhich 220voltage (vac) is used and variable voltage 0-----30 volts will outper(DC) and the minimum output current is 1 amp Please help me to bulid this circuit diagram I WILL BE VERY THANKFUL TO YOU. | ||
| I have given up trying to locate a 24V 5A transformer. they do not exist. the one with the lowest amps I can find is a 10 amp. will that be ok? | ||
| R2 gets super hot, and the pot get in fire. These 2 resistors are connected from the positive to the negative rails, WHY? It burns the resistor across the rails. I am sure this circuit diagram is right, as I saw it from many difference places, but why the pot burned? I am sure I have a right setup. | ||
| More a curiosity question than anything. The LM338 schematic shows an input voltage of greater than 28V while you have a transformer outputting 24v spec'd out. (assuming 120Vac input) ? | ||
| I have a couple 13.8 vdc power supplies that were used for ham radio; I'd like to build an aux. project box to use as a 1.2 to 12 vdc, 5A Variable Power Supply. If I include everything to the right of the bridge rectifier in the above circuit, am I on the right track? ... Thank you very much for your reply! | ||
| Hi Aarron What pin on the 2n3005 is the IN, OUT and ADJ. The data sheet for the 2n3055 does not give this kind of info. Am I to assume that the IN is the Collector, the OUT is the emitter, and the ADJ is the base. I have tried to wire this up but it is not working. I may have burn something up or have it wired up wrong. Thanks Mike | ||
| i cant find the exact valued elements for this circuit and pruchased a 24 V, 3Ampere transformer, 270 Ohm, 4.7 K Pot, 100uF 63Vdc Electrolytic Capacitor, 8200 uf 50 VDC Electrolytic Capacitor. actually i want 3 ampee cureent and variable 2 to 20 volts. with these element what output is expected ? Sir, please tell me ASAP. | ||
| Nice but based on fairly costly linear regulator. With variable output power supplies it's important to easily get the output regulated voltage that you need at any particular time. My thoughts on this is either: 1) Permanently hook up a cheap digi multimeter so that setting the output is easy & accurate, or 2) Building in a panel digi voltmeter. I'd prefer this but do not have access to a low cost design. Can anyone help here | ||
| Looking to build a power supply for a foam hot wire cutter, wire will be 12 to 36 inchs long depending on project. Would this power supply work for this? I would like to have 24 v and anywhere from 5 to 10 amps, so that is what caught my attention to this power supply.
Thanks
Great site. (Editor's notes: No.) |
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| Nonsence.
This will not supply 5 amps with a Voltage differential from input to output of 30 Volts. At 30 Volts between input and output and 5 amps out you will be dissipation 150 Watts in the device and it will go into shutdown. It can only supply one amp when Voltage between input and output is 30 Volts. See data sheet page three at bottom.
Sorry about that (Editor's notes: Not true. I've used this very supply for years. No issues dumping 5A into a 24V battery.) |
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| sir good morning. i want to know basics of power supply how it works? i don't have any idea about it so please send me some materials of power supplies basics, types of power supplies,applications. in net everything is available but it is vast and unable to understand practically.so please help me as soon as possible .its very urgent. | ||
| I have been searching for a design that has a 120 vac input and a 30 vdc output @ 15 amps. Have you designed anything like that so far? If not, I would appreciate any advice if not your own design. THANKS | ||
| hi sir it's good power supply ckt, but i don't want to use transformer so please send me ckt that should not contain transformer but do the same operation as this ckt do. (Editor's notes: You need a transformer.) |
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| hi....Good day!!! do you have an schematic of an inverter frequency, and it's article of the matter..i needed it on my project in school...or do you know how to increase the frequency of a power supply from 50hz or 60Hz in a computer....thanks for responding...i highly appreciated for your response...God Bless....just email me...thanks | ||
| This is for a Princeton Graphics 17" LCD flat screen monitor. I am electricity challenged and have no clue about using more or less...etc. Can either voltage of amp requirements be lowered or lessen safely and still function correctly? In other words, could I use a 12 volt 2 amp or 300 ma as a brief substituite? | ||
| Hello! i need the circuit of a power supply having output from 0 to 12 DCvolts. Its better that it is made up without using any IC,if not possible then send me the circuit with IC, and i want its full woking and description. Plz mail me as soon as possible its very urgent plzzzzzzzzzzzzzzzz! | ||
| i need the scematics for a regulator circuit that can be used to reduce the output of 2 3vdc batteries in parrallel. this is to be used to reduce the rotation speed of a small dc electric motor | ||
| I am working on a friends Tattoo gun power supply , very similiar to the one here but uses 2 regulators LM338K and a LM350k , my question is why the 2 regulators I think the guns don't draw more than 3 amps , he did a 5 hour Tattoo and it crapped out , looks like a resistor is burned out could you show me a diagram of how you would hook up dual regulators like the one I am working on ? Thank you in advance ... Lalo...:-) | ||
| Hi! My instructor told us about our requirements this final examination, that we are going to design 5-amp, 12v-0-12v step down transformer. i had no idea about the computation of the said transformer...pls help me or give me some idea on how to compute that transformer...hoping for your kind response... thank you and more power!! | ||
| Hello I need Power Supply with positive common of 0 to 70 volt 2 amp out put . Please mail me if you have this | ||
| thts a really cool circuit i really get sucess in the projec will u tell me the formulas relating the dc power supply construction | ||
| why is it the power supply connect to the12volts positive and negative? why is it the output of power supply of 6amps is 15volts? | ||
| i am very pleased with the site | ||
| Hello. I appreciate your posting this design. A couple of years ago, I needed a power supply for my "G" Scale model railroad. 5 amps was more than sufficient. Since I don't havve electronic controls on my RR, I use blocks which implies that I would need at least two power packs. The model shop wanted about $400 for a dual setup so I decided to buld my own. I built two of the power supplies into one case. I used some ceramic heat sinks for the LM338K units and so far, they have not even seemed to get warm so I don't uise a fan. I just cut several 2" holes in the case and covered them with wire mesh to ventilate the units. That did the trick. The two supplies were built into a metal electrical box that is 12 X 8 X 4. I added a panel voltmeter and ammeter on eqch side with two large knobs for contorlling the 5K pots..I also have a fixed 12 VDC tap with a switch and a red LED on each side and on the fixed voltage switch to show when the power is on. The only issue that I ran into was the lower voltage. With 1.2 VDC on the minimum setting, the locomotives would tend do crawl when the power was turned on. I cured this with some large ceramic resistors across the outputs in each supply to lower the voltage to zero. They are outside of the case in the back. It's crude but it works and they hardly get warm. The units have bene working flawlessly ever since I finished it. Thanks again! | ||
| hi..i want to design a circuit of output110Vdc where the input ia 240Vac..can u send me the schematic | ||
| Can i ask for a favor m8? Can u send me the schematic diagram of a variable power supply with an output of 0-12V and 1A? I need it for our final project in school.. Thanks lot! Hoping for a positive response..;) By d way,the circuit above is great! | ||
| In note #1. at the end where you said I did, at first glance it looked like IDIOT ... LOL just a good laugh! | ||
| i trying to construct 1.2 -30 volts 5 amps power supply adaptor i need a substitution for 0.01uf disc capacitor | ||
| Hi there, i was wondering if i can make an power supply which can produce 400VA with +/- 18V on Output. I was searching for an toroidal transformer but that version is more expensive and difficult to find. Please I'm waiting for your answer. | ||
| can you display the formulas you to find the values of the components in the power supply circiuts? | ||
| hello there (:
could you help me find a dual output power supply +-15 volts schematics and name the different sub-sections that makeup the dc power supply .Also components are restricted to 15 kinds and not more than 16 ! equal or less than 15 (:
Please and thank you (: (Editor's notes: Try the "related circuits" section.) |
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| hi am trying to design abattery charger i need a substitution for a transistor BRX49SCR | ||
| Please help me design a power supply that has a voltage range from 0-20 volts and a max current supply of 2 amps, ripple voltage at full load must be 10mVpp and max voltage drop of less than 2 volts at full load. When current is limited be indicated by an LED, a short circuit protection provided and LED indicating when power supply is off/on & 12 volts battery charger with a charging voltage of 13.7 volts and max. current of 2 amps, trickle charging at 11.9 volts. Battery charger must switch off when it is fully charged at 12.5 volts. 3 LEDs must indicate the charging process, tricle charging and when battery is full. | ||
| Is it possible to use the LM338T ??? | ||
| it's great design and i will use it at my lab but i need varible current the current in this circuit is fixed at 5 amp. what should i have to get varible current?? | ||
| please send me a circuit diagrame of regulated power supply that gives 0-30V and 3A current and also with details of components. The maximum voltage drop is 0.5V..please help me..thank you | ||
| I have a couple of 6 amp 13.8 volt DC powersupplies that i would like to turn into variable voltage powersupplies. I will want the high amps even at low voltage. I appreciate any knowledgeable input thank you grego | ||
| please send me a circuit diagrame of power supply that gives 0-30V and 1A current and also with details of components | ||
| Hello Sir/Madam, i am new in this things and a lot of things i didn't knew about it. Can you send me a dual output power supply for 240VAC input to 12V and 9V diagram. thank you.... | ||
| I know this is simple, but I have not found it. On the ICs like LM317 how do you tell one lead from the other. thanks | ||
| pls i help me design a power supply. specification. 10-12v voltage, and 700mA. need it urgent pls | ||
| just get a 7805 voltage regulator, use a small heatsink, it can get hot without heatsink, pin 1 on left is input is where u put 12v + to, middle to - of 12v suply, last pin is 5v | ||
| Desigh a 12 volts battery charger with cut out when the battery is fully charged.power supply must have a voltage range of 0 to 20 volts and maximum current supply of 2 amperes. a ripple voltage of 10 milli volts peak to peak . | ||
| please help to design a pwer supply ranging 0 - 20 volts, maximum current of 2A, ripple voltage at full load is 10mVp-p and a battery charger 12volts have a charging voltage at 13.7volts, maximum curent a t 2A, trickle charging cross over at 11.9V, short circuit protection as well as 3 LEDs indicating the charging process, the trickle chaging and when the battery is fully, charger automatically switch off when battery charger is fully charged at 12.5V | ||
| i want a variable power supply circuit that gives output of 0-30V 1A with complete details of components | ||
| please send me a circuit diagrame of power supply that gives 0-30V and 1A current and also with details of components | ||
| An old ATX power supply is usually something everyone has lying around and works great for powering an embedded system or 12V battery application that is under development. Just short the enable pin and use a LM317 to regulate your current/voltage. | ||
| Please help me to design adjustable variable power supply 0-25v.thanks... | ||
| I want to build a power suplly inwhich 220voltage (vac) is used and variable voltage 0-----30 volts will outper(DC) and the minimum output current is 1 amp Please help me to bulid this circuit diagram I WILL BE VERY THANKFUL TO YOU. | ||
| i need 7805 voltage regulator . if you know enything please contact me !!!!!!!!!!!!!! | ||
| this is a cool website i hope this will help everyone i love to look at new websites and check them out so i will be back soon. | ||
| im making a power supply that displays the output voltage 3V, 6V, 9V, 12V respectively. but im not able to make the circuit for the double 7segment display. can someone please help me with this. and also the components in making the lcd display | ||
| please help to design a pwer supply ranging 0 - 20 volts, maximum current of 2A, ripple voltage at full load is 10mVp-p and a battery charger 12volts have a charging voltage at 13.7volts, maximum curent a t 2A, trickle charging cross over at 11.9V, short circuit protection as well as 3 LEDs indicating the charging process, the trickle chaging and when the battery is fully, charger automatically switch off when battery charger is fully charged at 12.5V | ||
| if the power supply didn't work, how did to overcome this problem? | ||
| please help to design a pwer supply ranging 0 - 20 volts, maximum current of 2A, ripple voltage at full load is 10mVp-p and a battery charger 12volts have a charging voltage at 13.7volts, maximum curent a t 2A, trickle charging cross over at 11.9V, short circuit protection as well as 3 LEDs indicating the charging process, the trickle chaging and when the battery is fully, charger automatically switch off when battery charger is fully charged at 12.5V | ||
| Hi, Can any of you guys help me with a project. Im supposed to design a Power supply with 1A and an output of 0 to 12-15V. From a 220V input. Oh and i cant use a IC Regulator. Is that possible? Thanks so much.. | ||
| I think relatively is spelt incorrectly ;) | ||
| hi, i want to design 12 Volt battery charger with charging voltage of 13.7volts maximum charging current of 2A. It must automatically switch off when the battery is full. Short circuit protection with 3 LED's indicating charging process, tricle charging and when battery is full.please help me with any circuit diagram | ||
| I'm looking for a 2A intelligent 12V battery charger with cut out when the battery is fully charged.The battery charger must have a charging voltage of 13.7V and maximum current of 2A.The Trickle charging cross over must be at 11.9V.a short circuit protection must be provided as well as 3 LED's indicating charging process,trickle charging and when the battery is full.A power supply must have 0-20V and max current of 2A.The ripple voltage at full load must be 10mVp-p.Current limiting must be available to limit the current output.When the current is limited,it should be indicated by a LED.A short circuit protection must be provided as well as the LED indicating when the power supply is off/on.provision must be made for a display. | ||
| 12 Volt battery charger with charging voltage of 13.7volts maximum charging current of 2A. It must automatically switch off when the battery is full. Short circuit protection with 3 LED's indicating charging process, tricle charging and when battery is full. | ||
| I want to design a 2A intelligent 12 volts battery charger with cut out when battery is fully charged. The power supply must range from 0 to 20V, with current limit at the output. The battery charger must indicate with 3 LED's, indicating the charging process, the trickle charging and when the battery is full. | ||
| just get a 7805 voltage regulator, use a small heatsink, it can get hot without heatsink, pin 1 on left is input is where u put 12v + to, middle to - of 12v suply, last pin is 5v | ||
| can u give me a design of dc power supply with a 12 volts of power supply.output is +5 | ||
| I need a power supply : Input 12 V , Output +5,0 and +5,0,-5 with 1 amps current, stable up to .01mv. | ||
| Hi, great, it works! Does anyone know if I can add an adjustment for current also? Would it be simple? Thanks, TIm | ||
| do you have a circuit which reads 30v/-30v? | ||
| hi need ur help for this. dual output dc power supply(output +15v and -15v) of not more than 15 components,scematic diagram and explaination how it works thanks alot | ||
| I presume few have an electrical background in here! Therefore, hints I share for the general public: I strongly recommend RESEARCH, RESEARCH, RESEARCH!For the transformer questions: Study amp-turns ratios and their properties, they're approximately proportional, however the current rating will be affected! Parallel and series? Parallel circuits all receive the same voltage, however each component, if containing resistance will contain a different current draw! Summing up for the total current in a parallel circuit would be adding each route's current back to the primary source! However, total resistance in a parallel circuit will be less than that of the smallest resistor...Strange, huh? Series? Different of that of the parallel circuits, each component containing resistance will receive a different amount of voltage (electromotive force), however, the current draw will be the same for each one since there is only one path for the power to be driven across! I must go for now...See what you can look up on Ohm's Law, it helps a lot! |
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| can u gave me the schematic design of the power supply with universal cellular phone charger output and other connected charger that may used to connect to my power supply, or other device that may connect to my device.. | ||
| Hello Sir could u tell me please that i want to replace the ic (regulated) U1(LM338) to LM317 can i use this in my circuit of power supply And tell me the advantages and disanvantages to replacing this. | ||
| How to decide transformers secondary voltage to desine power supply ? | ||
| I require a 220v/24VDC 15amp supply that goes into to trickle charge when reaching its full level, can anyone help. | ||
| how can i build a 2 output power supply using only 1 transformer? the outputs should be 6V and 12V (using them at the same time). | ||
| Respected sir, I want a circut who make 18 volt, 350 m.a (AC volt) from 220 volt (AC volt). (specialy low cost circut)Please help me. and send me circut by e-mail. | ||
| i want a schematic diagram of a full wave and half wave power supply | ||
| I need a power supply with input 220V AC and output 12V,500mA | ||
| how do I design power supply -30V@15A?somebody please!!!!............anyone who have the info, please send to my email.thank you | ||
| can i ask for a schematic diagram of a split power supply of tda7240 stereo amplifier | ||
| hi every1 i need a lot of help i need to do this thing for my class or im gonna fail the class i just need some info about Power Supply u know what they do and all the thing u ppl can tell me or any web site where i can found the info hope u can help me..thks | ||
| i want to make a intruder alarm. as some one crosses the door, i would like to have some sort of a infrared sensor, to trigger the alarm, which wil sound like a door bell or a siren. i no how to make the sound and all. just having the infrared part confuses me. i dont no how it works., i would like for u to explain and mayby post a circuit thankx cheers! | ||
| its really nice finiding such a website ,,, i was wondering how to design a circuit regulated power supply 3-30 v @ 5 amp,,,? | ||
| Ok... legitimate question, unlike all the others you have recieved... I am in the process of building this power supply. What is going to happen if i short circuit the output leads? Will it continue to supply full amperage and just heat up the wires/components? or will it instantly destroy my LM338 regulator? Also, can i run 2 LM338's in parallel to supply 10 amps? (assuming my transformer will supply 10A), Thanks! | ||
| Can i Ask f there's a perfect power Supply?? how can i make perfect the power suppl?? | ||
| how will be the circuit if the input voltage is 220v and the out put is 24vDC ? after finish Battery (24 VOLT DC) fully charged charging is off please replay And also tell me the circuit IF input is 24 volt dc and output is 24 volt DC Automatic cut off after finish battery fully charged REGARDS SYED YASIR IQBAL PAKISTAN | ||
| I am very glad to see this type of website .It's very useful to me . i need the circuit of electronically regulated power supply. | ||
| I need this power supply but I'm having trouble simulating it in Cadence what part do you use for the transformer. | ||
| i have 2 computer fans that have .44 amperes and have the pos and neg and ground cables but i need to hook these up to a normal wall outlet and was wondering what kind of powersupply or what parts i wud need to convert 2 fans to one plug in | ||
| I luv the circuit diagram, its symbol specification and the description of the circuit. I wish this circuit is send to my email. | ||
| how will be the circuit if the input voltage is 220v and the out put is 18v ? please replay soon | ||
| Could you please give me a step by step instruction or guide on how to assemble a dual power supply having an output of 15 volts that has a regulator in order to change the output voltage. tanx!... ^_^ | ||
| how much current output do i need to run a typical car stereo head unit with approx. 20 watts per channel? can i build this power supply w/o R1 (5k ohm pot) and replace U1 (voltage regulator) for a 12v regulator (LM7812 for instance)? | ||
| im sow very happy that there was a website like this. | ||
| i need a dual polarity regulated dc power supply 0-15 volts.plz send me its circuit diagram and detailz. | ||
| i would like to now deep discription of the power supply of the thermal and coal system.pls send it discription and drawings. | ||
| the voltage rating of the above circuit is what i am looking for. however, i need a higher current rating than 5 A. how can i raise the current up to 10 A? thanks. | ||
| hmm.....nice!! | ||
| how to increase current output?, can i pararel with TIP 2955 in LM 317 thx regads | ||
| i need a layouts of split type power supply & regulator circuit layouts and assemble | ||
| can i have a power supply diagram ranging from 12-15volts 6-9 amperes. for our two channel 100watts each audio amplifier. please... need it as soon as possible | ||
| Could you please show me step by step in order to determine the time taken for relay to operate off a 24V dc supply if the armature is pulled in when the curren reaches 60% of its maximum value. The resistance of the coil is 2K and the inductance is 20mH | ||
| hi, i want to make power supply of 5v DC 10amp rating using pwm. input voltage range 90 to 220 vac thanku | ||
| what are the advantages of dual power supply....??? than single power supply.... | ||
| need tthe circuit diagram of a transformerless, swithcmode power supply with output voltage of 24V DC and 5A | ||
| pls post the computations of the said power supply please i need it thenx also the computations for the transformer pls | ||
| Can't I use an LM317 with a pass transistor for a 5 amp power supply? | ||
| i want 2 know how go abt d construction of d power supply schematic diagram above and alternative to lm338 regulator | ||
| want to add a short circuit protection on my supply, any ideas? my power supply is 220Vac-24Vdc 1A | ||
| What is the BOM (Bill of Material) of this power supply? | ||
| plss help us how to build a variable dc power supply 3 to 12 volts and give us some layouts plss and we will wait for you concern thank you very much xoxo. | ||
| Hye i need to draw a 9V from the circuit througt an IC 7809 to supply my voltmeter.. where can i draw such voltage?? thanks, Belal | ||
| Can you please send me a circuit to convert my 5 volts dc power of my computer to 3 volts DC. thank you and best regeards. | ||
| please help me to constract a design for regulated power supply having an out put of 12 volts,,,we need to use 220 input tranformer having 2A current,,thanks...pls email me ASAP | ||
| i have a 12-0-12 of 2amp transformer and i have to use it for the voltage regulation could you please insist the circuit for the connections with variable power supply diagram. | ||
| what are the 2 kinds of power supply?? the regulated and unregulated right?? so, what are the meaning of this two?? | ||
| CAN YOU GIVE ME the step-by step procedure of making a basic dc power supply...having a step down multi tapped transformer..thank you.just email me ok? | ||
| please post the schematic diagram of 0 to 30 volt output power supply.. | ||
| i has already power supply 0-20v dc and i want annotate output with 7 segment displays (3 digits). can u design pcb circuits with 7 segment displays(3 digits)for power supply 0-20v dc...email me plzz.....ty b4 =) | ||
| can you give me a schematic diagram of power supply used in home computers. | ||
| please post the schematic diagram of 5 to 25 volt output power supply... | ||
| i just wnna know the techniques of making a power supply.. its our final exam....please email me at my address..im just a freshman student and i have no background at this stuff.. thank you | ||
| help me and give me pls a circuit of a 1 to 15 volts DC output power supply which has 220 v input and uses diode bridge and regulated...and also a ciruit of a digital voltmeter which is to be attach..thank you very much | ||
| sir, we want design single power supply using following specifications. input-230V output voltage-12V output current-5A we need to use programmable regulator with proper step size.even let us know use of each &every component used in this required circuit and any other option for that components used. | ||
| Sir could u do to me a schematic circuit variable output 2-12v 8A ac and dc from 240v. in the circuit will have relay,inductor,transfomer, rotating switch, fius, diod, transistor, LED,capacitor, and BR.plz (Include thr introduction, discussion, result. How I can check the power supply if its work or not before I use the device without using digital multimeter | ||
| Dear Sir /Madam. I would like to grow up in electronic divece and knowing a lot how it functioning. I would like to know a lot about the computor power supply, so could you please send to me information about the above mentioned motion. Thi will include the followings:(Introduction, body, results, histoy, conclusion, authors, results , the component, and the sample of the function computor power supply. I will be gratefully if I will get a repply as soon as you get this message Yourstrully Mabila SS | ||
| hi, i want to make power supply of 0 to 15v DC. so for that what thing i need to bye and can i implement it please could u tell me. bye | ||
| I need the regulating 3-16 output volt DC power supply ( 5 amp from input line AC 220-250 to 3-16 dc volt ) | ||
| hi to whom it may concern .. -----) I (---- can i have two briges conected ) I ( 240 V ac ) I ( 12 V ac ) I ( -----) I (---- to this type of transformer ? thenks in advance for help .. | ||
| can you give me a schematic and block diagram of full wave power supply with potentiometer 5-25 volts output | ||
| how can i trace fault in my power supply.special in radio or tv | ||
| sir, I want to make a dual power supply circuit having 230 volt AC and output of (12 volt dc, 1.5 A) and (5 volt dc, 500 mA). please give me a circuit to assemble it. | ||
| I WANT 2 DESIGN A 5 V REGULATED SUPPLY USING LM 323K AND USING BRIDGE IC | ||
| I like to add panel meters to this project. The volt meter would be connected between out+ and Ground? How would i connect the amp meter? Tnx | ||
| how can i make tattoo machine working without tattoo power supply, i mean another power ? please if there some idea, let me know | ||
| hello sir, I am very happy to take your circuit and i have small doubt that how will we calculate the capacitor value could you send the calculation process of capacitor value. I asked so many people no one has the knowledge to calculate it. So you are my only hope please send the designing of capacitor value.I hope you will give the answer what i required. Thank you. | ||
| how i can check the power supply if its work or not befor i use the device without using digital multimeter??? | ||
| could u do to me a schematic circuit variable output 2-12v 8A ac and dc from 240v. in the circuit will have relay,inductor,transfomer, rotating switch, fius, diod, transistor, LED,capacitor, and BR.plz | ||
| its nice.. pls help me how to make a power supply | ||
| hi aaron, can you help me? i need a 44-50 volt 3-5 amp power supply. i perfer 48 volts and 4 amps. i need 14 of these so i have to build them extremely cheap. thanks randolph | ||
| sir plz help me in designing 220v Ac to 5v dc power supply | ||
| hello sir pls help me my in design i.e powersupply using lm317 ic of 0to24v 5amp | ||
| hi can you plz help build a ps with following specification: inpout voltage 230v ouput 12v 5A | ||
| i need a regulated power supply shemactic diagram of 12 volts, 6 ampere and its components tnx.. | ||
| i want to have power supply schematic diagram that has 5vdc regulated output terminals | ||
| sir pls send me in e-mail the important information about 24 volts output power supply,220 v input. thank you..... | ||
| hello sir : I bought a power supply,but Ihad the problem with 3.3 v (too much noises). Would you show me how to get the noises off. Thank you sir. | ||
| Using a transformer closer in voltage to your output voltage would help your heat problem with the regulator. 3 to 5 V above the desired output on C1 would be good. i.e. if you want 5VDC then 8 to 10VDC should be supplied by the transformer/bridge/capacitor circuit. You should still use a heatsink but a fan will not be necessary ... Hope this helps! | ||
| i need 24V O/P single.plz guide me that circuit details.. | ||
| Hi I would like to know how to built a power supply with a maximum output of 12V then step it down to 9V, then 5V lastly to a minimum of 3V. | ||
| pls provide wat is the meaning of power supply in clear manner | ||
| hello sir ,can u plz help me in desigining 0-30v & 0-2A power supply ..thanks | ||
| hello sir ,i needed help to design a 0-12V/5amp power supply using programmable regulator..can u plz help.thank you | ||
| pls i need a power supply with regulated 13volts output and limited current supply not exceeding 2amp. | ||
| iam unable to design this supply plz heip me forthe same | ||
| hello sir, i want to make 9v,500mA unregulated power supply so i want know the components value. | ||
| sir.. maam..! i need variable power supply and fullwave power supply brigde type.. thanks sir..maam..! | ||
| hi guys, plz provide me circuit diagram or idea which convert ac voltage in to variable dc means 5volt to 25 volt..and with constant current.(up to 25 ampere max. current setting)....plz provide this circuie for my career project.... | ||
| Sir I want -12V,2A regulated power suply with external over voltage protection circuit & also over current indicator. | ||
| power supply of +/- 5V,500mA | ||
| Hello sir! I want to make a variable output power supply(AC-DC) with computations or calculations. Please guide me!.....Thanks in advance! | ||
| hello sir, i need to design power supply having dual output(+/-)on pcb so for that i want complete circuit diagram & its description so pls kindly guide me... | ||
| i want power supply which gives the o/p with variable dc up to 30 volt and constant 29 amp current any one can help me..its very challenging.............so think........ | ||
| hi guys, plz provide me circuit diagram or idea which convert ac voltage in to variable dc means 5 to up to 25 volt..and with constant 29 ampere current....plz this for my career project.... | ||
| I Need a variable dc power supply layout ranging from 9-15 volts dc. Please..thanks | ||
| i have some batteries and want ac power, does anyone knows how do i know how much ac power i can get out of the batteries. the batteries can give me 12 v.dc 600 watts how much watts can i get in ac, | ||
| please sent me a power supply schematic diagram of 3 multiple outputs of about 30v fully stabilized | ||
| i need help finding a power supply i need a good +11 and -11 volt | ||
| hello sir i needed help to design a 0-12V/5amp power supply using programmable regulator..can u plz help.thank you | ||
| I WANT TO CONSTRUCT A DC VARIABLE POWER SUPPLY FROM 0 - 15 VOLTS. PLEASE HELP ME FIND THE SCHEMATIC DIAGRAM FOR THAT! THANKS!!! | ||
| Hello, Sir i want a Transistorize 15 volts variable with current limiting Power Supply can you please help me? I want to get a schematic diagram of that, thanks | ||
| need circuit diagram for 5v and 10v power supply.... | ||
| I have a power supply and I need to be able to reproduce it, the only problem I have is I don't know what type of transformer it is, I'm thinking it's a rectifier transformer. The power supply has the following; 1 transformer (unknown, has 2 lugs for primary input 120v, w/ a resistor across the lugs, has 3 lugs secondary output) 2 capacitors 5000 mfd 50 vdc 2 fuse holders w/ 4amp fuses 1 bridge recitfier gbpc2504 this power supply produces 32v + and 32v - and a common for both of these voltage outputs. | ||
| i need an introduction to details about power supply and also a circuit diagram/ schematic diagram of a 50volt d.c stabilized power supply. | ||
| hi! i need to construct a 6 ampere, 200 watts output, split-type power supply for my project. pls help my.i need a schematic diagram for that!thanx!Gob bless!!! | ||
| in this case please help me to make fixed 12 V out-put without using voult meter,,thnks | ||
| Will you be willing to Give me an simple explanation, of how your system generate the pulce to keep resirculating the power Trhought ?? for yor time and your help Thank you very much !! Marck | ||
| I need help in constructing A DUAL OUTPUT 15 VOLTS DC POWER SUPPLY,KINDLY RECOMMEND A SIMPLE CIRCUIT DIAGRAM AND GIVE ME SUITABLE COMPONENTS AND REPORTS. THANKS. | ||
| I have a problm with above circuit.It gives only 9V to 13V only. pls reply me. urgent | ||
| i need the supply for +12 and -12 volt in a single circuit. plz give me the info. | ||
| this is good,but i can't find the function of power supply...and it's annoting me so much because i'm in a hurry and i need to find it asap.. | ||
| this power supply is very useful but i can't understand it? | ||
| PLEASE I WANT TO CONSTRUCT A DUAL OUTPUT 15 VOLTS DC POWER SUPPLY,KINDLY RECOMMEND A SIMPLE CIRCUIT DIAGRAM AND GIVE ME SUITABLE COMPONENTS AND REPORTS. THANKS. | ||
| I would like to design a 110VDC/12VDC Power supply. Please can you help me? | ||
| i need a true diagram of a power supply. | ||
| place sir, i will be greatful if you can assist me with the schematic diagrams of the power supply unit of a desktop computer and laptop with input of 220v. thanks | ||
| sir i need a power supply for voltage varrying between 0 to 0.3 v, so please give me a circuit or some idea for that thank you | ||
| PLEASE I WANT TO CONSTRUCT A DUAL OUTPUT 15 VOLTS DC POWER SUPPLY,KINDLY RECOMMEND A SIMPLE CIRCUIT DIAGRAM AND GIVE ME SUITABLE COMPONENTS AND REPORTS. THANKS. | ||
| hi I have been searching for online help and got directed to ur site. i wanted to construct a 0/+24V and constant 5V with 1A current. Can you please help me build this. Its for my analog electronic course. Help from you will be greatly appreciated. | ||
| My name is andrew cousley and i will like to know more stuff about power supply | ||
| design and implementation of power supply | ||
| i am new in this field please give me basic and advanced critarias of cct designing | ||
| PLEASE I WANT TO CONSTRUCT A 15 VOLTS POWER SUPPLY,KINDLY RECOMMEND A CIRCUIT DIAGRAM AND GIVE ME SUITABLE COMPONENTS. THANKS. | ||
| Sir Im very thankful u that u give so easy circuit | ||
| i need power supply | ||
| Hello! i need built a power supply: -12 0 +12 Volts. Really is a dual power supply. How can I doit? | ||
| how to design 12volt and 5 ampere regulated power supply | ||
| I'd like you to send me the report please so that I may get a better understanding of this power supply. | ||
| Can you tell me what gonna happens if i make it with a 24V / 1,8 A Tramsformer? (Becouse i have one at home, and if it will be not a big problem i dont buy another one) Thx | ||
| hi I have been searching for online help and got directed to ur site. i wanted to construct a +/-30V and constant 5V with 1A current. Can you please help me build this. Its for my analog electronic course. Help from you will be greatly appreciated. | ||
| i have tried your many circuit diagrams.but no one works.you are hiding many things in that | ||
| Can someone help me on this, I'm not good with electronics and I was just trying to build a cooler for my game system, and I used a 6v power supply to power a 12v Fan.....it worked for about 15min. and then died, I found out it was the power supply that died and it was pretty hot but the fan was ok, did this happen because I used the wrong power source or it is somthing else? any answer would be appreciated thanks!! (Editor's notes: Use a 6V fan.) |
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| PLEASE SEND ME A COMPLETE REPORT ON DC POWER SUPPLY OF +5V PLZ SIR DO THIS FAVOUR REGARDS FARHANA | ||
| good | ||
| thank you very much sir,for the circuit.I am very happy to say that we worked on it and got the output succesfully | ||
| from 1.2 to 25 volt | ||
| please send me a circuit of regulated power supply. oslo i want report on this topic actualy it is my minor project.i wish you can send me a report on this topic. | ||
| hi...i would like to ask you the meaning of power supply (Editor's notes: Google "define:power supply": A separate unit or part of a circuit that supplies power to the rest of the circuit or to a system. www.flw.com/define_p.htm) |
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| Hi i got a question for you. Ok first I'm a Tattoo Artist And all my Tattoo Machines Can run up to 12 Volt. I got a 12 volt 500 M/A Power supply. My problem is I want a varable to change the output Voltage To beable to decrease the voltage for different speeds Some where from 6 Volts Up to the normal output 12 volts 500 M/A. Iv tryed running a 500 ohm pot between the two positives but it burns the pot up, I also try a few other different wiring with the pot it burn up every time. If you could give some addvice it would be greatly appreciated! (Editor's notes: Look up PWM motor controllers.) |
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| hi sir , i want a power supply ckt. for leds (100 watt) | ||
| PLZ. SEND ME CIRCUIT DIGRAM OF DC REGULATED POWER SUPPLY. 0 TO 18 VOLT SEND PROCESS HOW CAN WE MAKE IT. | ||
| hi sir...can i ask you a favor to teach me how to make a power supply in a simple way...may i ask also a design from you?...im very much thankful if you grant my request...thanks!!! | ||
| good day sir, i need 0 to 15 volts variable power supply..and i want to know the compuation on it..for example the capacitors..etc..i hope you submit it as soon as a possible..thank you..my email address ...deadline of our submission is may 14, and 15, 2007 | ||
| i need the supply for +12 and -12 volt in a single circuit. plz give me the info. | ||
| sir, I need (5V) to (12V) power supply For flashing LED circuit. | ||
| Please provide Ckt. diagram for 24 V DC, 500 mA regulated power supply. Want to drive 2 SPDT relay of 24 V DC, 10 A, & 6 LED's. | ||
| My search light needed input of 12 volt dc, 15 amp.supply. as i had got a eliminator whic is 0 - 15 V dc regulated supply, and max amp of 25 amps. when I connect the light to it, only filament burning light output is there and output voltage showing as 5volt , 2 amp. wat to do. | ||
| I need a power supply with following Output requirements 8 Amperes, 20 Volts, 100 Watt power which i want to use for Diamond Anvil Cell Heating system. | ||
| Plz it is our final term Assignment help me "construct a power supply who's output is 12vD.C and having minimum ripple effect" | ||
| good p.m. here in phil.i have this problem of making a 30 volts + 3 amperes variable power supply with transistorized current limiter that will last at least a minimum of 3 minutes.pls.,do help me.i really need the schematic diagram of it if you have.A million thanks to you.i'm waiting for your reply. | ||
| Sir, I need a 24 volt DC power supply to feed my 24 volt PWM DC motor speed control which is rated for 15 amps, but I only need the power supply to supply a regulated 24 volts at 5 amps. The LM338K would do fine. I will be building a total of 15 of them to control my 15 G scale trains. I have a Buck Boost 12/24 volt transformer rated for 62.3 amps at 24 volts AC which is more than I will need and each train will pull a maximum of 1 to 3 amps. In your schematic you show very large input capacitors and I would think that a single 10mf to 100mf for the input and a single output capacitor would be sufficient for my application being small DC motors. What are your thoughts? If you could email me a schematic with components and values I would appreciate it. Thank you Gary | ||
| pls. tel me hw 2 construct pwr supply w/ d output of 12 volts | ||
| Hi sir my name is mashudu, can you please send me the difference between regulated and unregulated power supply | ||
| im trying to put a 1100watt subwoofer,amplifier,radio and tweeters in my room and i don't know what kind of power supply to use | ||
| Can you tell me how to built output +12V, 0V, and -12V? Will it be use 1 or 2 trabsformer? | ||
| It seems to be very easy to do such a power supply just like that. I'd really like to try one but I'm not familure with the components which have been used. However, most of the components (trade number/technical number or name) were not clearly shown. That makes it more dificult to me to find out how to use it searching for the data sheet. For example, "LM338K" can be found easily, but the rest of the components were not. I'd like to ask you please help me due to this issue. Can you please send me the data sheet for each component? | ||
| Just great, i build it and it works great. Thanks for the circuit. | ||
| plz,kindly can u send me simple 5 volts power supply circuit ,i have got task,kindly help me urgent | ||
| Sir kindly send me the circuit of power supply,which has output of 12v,and has maximum ripple effect. | ||
| Sir please provide me circuit diagram of power supply whos output should be 31volts and 14.5volts for running my PSC | ||
| i have a project to construct a variable power supply upto -+20 volts output plz send me circuit for it | ||
| sir kindly provide me power supply of 5V from 220v A.C using 220-6v transformer | ||
| Please send me the schematic diagram of 12volt 35milliamperes power supply and please tell me how I can convert 12volts 8amperes power supply into 12volts 35milliamperes & also give me information on ampere regulation. Please response me on my email as soon as possible. | ||
| Hi Sir Kindly sir send me circuit of power supply which contain zenor diode and BJT | ||
| Hello sir, i want to do a mini project .Can u provide me circuit for versatile power supply. It is urgent so please forward it to my email id. | ||
| i wud like to have 12-0-12 power supply internal ckt diagram xplanation as quick as possible | ||
| It's good to discover new invention | ||
| Hello sir...I want to know about the function of power supply. | ||
| Hi sir, good morning..........i need a power supply models.i want to know how about the function of power supply. | ||
| Thanks. Very useful site. | ||
| i need a circuit design for power supply + regulator + 5V + 1A and it explanation..please..as soon as posibble | ||
| plz send the circuit for + -12v&5v in a single circuit. | ||
| need detaled circuit diagram for unduction heater 2500watts | ||
| i need to build a -/+ 5 V .5A power supply with no voltage regulator, anyone can help me please, | ||
| SO SIMPLE ..... GIFT ME HARD..... | ||
| I need the 5amp with 5V regulated circuiti need the 5v for my assignment... if any body have plzz send me humanlover74@hotmail.com | ||
| i want the output of the circuit max 15 V DC | ||
| cool | ||
| Please give me some Configuration and Architecture related documents in the email | ||
| Sir/Madam, I am sandeep, design engineer, BPL Telecom, Palakkad. We are in need of a power supply with the following specifications. Input Voltage +48v,-48v Output Voltage +-50v Output current 5A Can anyone help me to send the circuit diagram of the above specified product. Thank you, Regards, Sandeep | ||
| does this project works on 220VAC (Editor's notes: Yes. Just use a 200V transformer.) |
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| can you please present the wiring diagram | ||
| i need the 5v 1A power supply regulator circuit for my assignment...anyone can help me?alcatraz0515@yahoo.co.uk | ||
| i definitely enjoy reading your site... thank you. | ||
| i want the output of the circuit 5 & -5 & 12 & -12 & 15 &-15 | ||
| this circuit is very good .but i needs 12. to 38 volt veriable power supply circuit diagram i you or your freind having such circuir kindly send me by e-mail thanks palitha wiratunga palitha51@post.com | ||
| nice circuit. I tried it. | ||
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