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pebe
Nobel Prize Winner
United Kingdom
1078 Posts |
 Posted - Jun 17 2008 : 12:47:50 PM
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quote:
Originally posted by steven
hi,i have a question wanna to ask upstairs,what's the friquency(it seems only 0.5Hz)?what do you wanna to use for? your input fuse is 5A,but your switching transistor is 3055*2? How many Watt do u wanna to output? i am engineer for power supply, i think i can help u to complet this case.
Which circuit are you asking about? |
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kivdenn
Nobel Prize Winner
Uganda
535 Posts |
Posted - Jun 18 2008 : 04:45:00 AM
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| I think he means my 24V/48V inverter circuit. The frequency is 50Hz and the output is determined by the transformer size.Dennis |
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kivdenn
Nobel Prize Winner
Uganda
535 Posts |
Posted - Jun 19 2008 : 04:05:22 AM
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Hullo Juan this modified sine wave inverter has failed to run my fridge yet the fridge is rated 83Watts and the inverter is producing over 1000VA because it it using a 30Amp transformer and 8 mosfets of 50amps each paraleled on each chanel of the oscilator. Why?
Dennis |
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JUAN DELA CRUZ
Mad Scientist
Philippines
476 Posts |
Posted - Jun 21 2008 : 03:50:28 AM
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[quote]Originally posted by kivdenn
Hullo Juan this modified sine wave inverter has failed to run my fridge yet the fridge is rated 83Watts
Hi Dennis...
What M.S-wave inverter are you refering with????.....
........my M.S.-wave Inverter???
and the inverter is producing over 1000VA because it it using a 30Amp transformer and 8 mosfets of 50amps each paraleled on each chanel of the oscilator. Why?
My M.S-wave INVERTER was rated '500W OUTPUT' only not 1000W. It uses '1000W' transformer from old microwave oven. I remove the secondary winding (rated 2000V) & rewound it for my primary winding w/ centapped (rated 12V-0V-12V/ 105Amperes using #3 AWG magnetic wire).
I used 'two pairs' of IRFZ44 Mosfet to obtain 500W output.
You can increase its output power by using better Power mosfets, but,
........ be sure to use batteries (paralled) & transformer(high rated power in WATTs) that can handle your desires 'Huge output'.
..Your Fridge has a motor that needs 'high current' to start.
That's why it didn't run it 'coz its output is limited for only 500W. |
juan dela cruz
Penniless INVENTOR |
Edited by - JUAN DELA CRUZ on Jun 21 2008 03:52:05 AM |
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j12
Apprentece
Pakistan
10 Posts |
Posted - Jul 02 2008 : 1:37:37 PM
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can any 1 tell me if we r not conecting the t1 step up transformer what was the reading of the reading of circuit and what was rga right conection of 2n3055 i am confuced to conecting, or what was the right way to use the microwave transformer in this circuit
plzz help me  |
john |
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j12
Apprentece
Pakistan
10 Posts |
Posted - Jul 02 2008 : 1:38:59 PM
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can any 1 tell me if we r not conecting the t1 step up transformer what was the reading of the reading of circuit and what was rga right conection of 2n3055 i am confuced to conecting, or what was the right way to use the microwave transformer in this circuit
plzz help me |
john |
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audioguru
Nobel Prize Winner
Canada
4218 Posts |
Posted - Jul 02 2008 : 6:23:10 PM
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Hi John J12,
Which inverter circuit are you making?
The original project on this site with only two 2N3055 transistors does not work. A rewound microwave oven transformer won't make it work better. |
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j12
Apprentece
Pakistan
10 Posts |
Posted - Jul 03 2008 : 06:46:37 AM
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hi 2
i am talking about
12V to 120V Inverter
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john |
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audioguru
Nobel Prize Winner
Canada
4218 Posts |
Posted - Jul 04 2008 : 7:31:41 PM
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Hi John J12,
The 12V to 120V Inverter project has many things wrong with it so it does not work. |
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j12
Apprentece
Pakistan
10 Posts |
Posted - Jul 06 2008 : 3:45:43 PM
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ohh man !!!
did u have any dc to ac converter diagram , i want to convert 12vdc to ac current ,i have a step up trams former i give her 12vac they convert 215vac, so i want a dc to ac converter diagram. |
john |
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audioguru
Nobel Prize Winner
Canada
4218 Posts |
Posted - Jul 06 2008 : 6:07:21 PM
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A simple square-wave inverter will not power many electronic products properly and speed controllers for power tools will not work.
How much power do you need?
Do you have a huge battery to power it? |
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j12
Apprentece
Pakistan
10 Posts |
Posted - Jul 07 2008 : 3:24:06 PM
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thankx for replying 
"audioguru"
i wanat to run only 1 tv and 1 music system
now i have only a 12v 60A car battery |
john |
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audioguru
Nobel Prize Winner
Canada
4218 Posts |
Posted - Jul 08 2008 : 01:45:33 AM
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Your TV and music system is made to run from a sine-wave and probably will not work properly from the square-wave of a simple inverter. They will probably work from a modified sine-wave inverter circuit.
There are some good modified sine-wave and pure sine-wave inverters sold at a low price. They are made in China and cost much less than you can make one.
Your battery is only 720Wh. It will run a medium TV and medium music system for about 3.5 hours. |
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j12
Apprentece
Pakistan
10 Posts |
Posted - Jul 08 2008 : 03:23:37 AM
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| thankx dear |
john |
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almaleky
New Member
2 Posts |
Posted - Sep 12 2008 : 11:52:19 AM
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HELLO YS..
I WANT TO UNDERSTAND HOW TH BOTH BIAS IS CONNECTED TO BOTH COLLECTOR>
PLEASE EXPLAIN THIS CIRCUIT IN POINTS...VERY THANKS |
I LOVE PROPHET MUHAMMAD |
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Topic |
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12/120V inverter again
