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JUAN DELA CRUZ
Mad Scientist
Philippines
476 Posts |
 Posted - Aug 27 2010 : 11:51:05 AM
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@wassup1990,
But, better mosfets can increase its eff. 
So, what your next plan pal? |
juan dela cruz
Penniless INVENTOR |
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RRITESH KAKKAR
Apprentece
India
23 Posts |
Posted - Aug 27 2010 : 12:47:26 PM
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| Why 2 FET are connected in Parallel For Suply of Transformer............? |
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audioguru
Nobel Prize Winner
Canada
4218 Posts |
Posted - Aug 27 2010 : 2:34:10 PM
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quote:
Originally posted by RRITESH KAKKAR
Why 2 FET are connected in Parallel For Suply of Transformer............?
Because when the output of the square-wave inverter is 800W then the current from the battery is about 850W/8V= 106.3A which cannot be switched by a single Mosfet on each side. |
Edited by - audioguru on Aug 27 2010 2:34:55 PM |
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RRITESH KAKKAR
Apprentece
India
23 Posts |
Posted - Aug 28 2010 : 12:15:01 AM
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| Ok, for this We can Use // Connection in Almost every Circuit ...........! |
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wasssup1990
Nobel Prize Winner
A Land Down Under
2261 Posts |
Posted - Aug 28 2010 : 07:22:41 AM
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quote:
Originally posted by JUAN DELA CRUZ
@wassup1990,
But, better mosfets can increase its eff.
So, what your next plan pal?
Things are still up in the air with my solar power idea. I am in the middle of my second semester for this year so there is no chance of me dedicating a significant amount time to design a power inverter (or inverters) suitable for the mammoth task of powering our house. |
When one person suffers from a delusion it is called insanity.
When many people suffer from a delusion it is called religion. |
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pebe
Nobel Prize Winner
United Kingdom
1078 Posts |
Posted - Sep 03 2010 : 03:16:56 AM
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JUan,
Once again the forum shows a posting by you that does not exist. This one is for Sept 02 at 6.26pm. Are you deleting them? |
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JUAN DELA CRUZ
Mad Scientist
Philippines
476 Posts |
Posted - Sep 03 2010 : 05:58:24 AM
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quote:
Originally posted by pebe
JUan,
Once again the forum shows a posting by you that does not exist. This one is for Sept 02 at 6.26pm. Are you deleting them?
Good day,
Mr. Pebe, how are you? It is been a long time right that you'd assist me in constructing the msw inverter. I really appreciate it sir.
BTW, I am sorry for editing my post. I just upload the corrected diargram for the sake to whom needed the ckt. I hope they will help them out. |
juan dela cruz
Penniless INVENTOR |
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JUAN DELA CRUZ
Mad Scientist
Philippines
476 Posts |
Posted - Sep 03 2010 : 06:34:47 AM
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quote:
Originally posted by wasssup1990
quote:
Originally posted by JUAN DELA CRUZ
@wassup1990,
But, better mosfets can increase its eff.
So, what your next plan pal?
Things are still up in the air with my solar power idea. I am in the middle of my second semester for this year so there is no chance of me dedicating a significant amount time to design a power inverter (or inverters) suitable for the mammoth task of powering our house.
johnny,
I see you are quite busy with your study. That's right.. . "Study first before any girlz. . I mean before anything else" 
Btw, pal I am planning to build a inverter using PWM IC (such as TL494). Maybe I will made a low f. type with Modified-sidewave Opt.
Do you know a tutorial sites regarding this?
I do have a lot of datasheet of the said IC but I am quite confused.
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juan dela cruz
Penniless INVENTOR |
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wasssup1990
Nobel Prize Winner
A Land Down Under
2261 Posts |
Posted - Sep 03 2010 : 06:59:22 AM
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quote:
Originally posted by JUAN DELA CRUZ
Btw, pal I am planning to build a inverter using PWM IC (such as TL494). Maybe I will made a low f. type with Modified-sidewave Opt.
Do you know a tutorial sites regarding this?
I do have a lot of datasheet of the said IC but I am quite confused.
Hi Juan,
I may have come across a few websites with inverter designs. I only look at them briefly to get a basic idea of how others are making their inverters.
What I am more interested in is different design ideas and circuit topologies which I might use in a future project. I gather all of these little pieces of information, sort them and then pick and choose the best design ideas and make my own new project from them... along with my own design ideas and methods.
Audioguru might remember this. I think it was 2003 or 2004 (I was 13 or 14 years old), I made my first inverter which was a LF type. I don't really know off the top of my head if I have some research laying around for my LF inverter. It was a very simple inverter and wasn't all that efficient, but it was just amazing to hook up to a car battery and hear the 50Hz square wave humming away in the transformer whilst powering Drills, Light Bulbs, a T.V. and a food mixer.
Now it's time for a more useful challenge... A HF inverter which might be used to power sections or the whole house. I am no longer gathering info on LF inverters.
I have 3376 e-books though.
EDIT: But on a number of different topics. Not necessarily on inverters although there could be some in there. |
When one person suffers from a delusion it is called insanity.
When many people suffer from a delusion it is called religion. |
Edited by - wasssup1990 on Sep 03 2010 07:01:03 AM |
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JUAN DELA CRUZ
Mad Scientist
Philippines
476 Posts |
Posted - Sep 03 2010 : 09:16:23 AM
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Hello johnny,
Well my plan is to make first a Low freq. Type inverter using PWM IC (such as TL494) just to be familiar with PWM ic. Then, I planning to make a HF type to achieve lighter in weight but greater in efficiency.
But, I need to have first to see samples ckt. Pal, do you have some schematics diagram of a HF inverter any kind of topology?
I failed to find in google a descent schematics. I am just hoping you have one 
Thanks, |
juan dela cruz
Penniless INVENTOR |
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wasssup1990
Nobel Prize Winner
A Land Down Under
2261 Posts |
Posted - Sep 03 2010 : 10:38:48 AM
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I have to say that I haven't tried too hard to find HF inverter schematics, mainly because of my studies.
Since I can't find any documents on HF inverters in my archives it either means I haven't found any or I haven't found any designs worth collecting.
Do you at least have a cheap HF inverter there to take apart?
They are quite simple. Put very simply you have a DC-DC converter and then a modulator modulating the DC-DC converter's DC output into an AC power signal. What I am trying to tell you is that you can design your inverter in these two basic sub-circuits. Design a DC-DC converter (plenty of resources out there) and then I dunno... use a H-Bridge to modulate. My cheap 300W inverter does just what I have explained; it uses a H-Bridge. |
When one person suffers from a delusion it is called insanity.
When many people suffer from a delusion it is called religion. |
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Another PWM inverter circuit
