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aamir
Joined: 30 May 2004
Posts: 10
Location: Pakistan
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 30 May 2004 13:17 ups circuit diagram |
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Hello  Everybody!
I m a new member. My name is Aamir and I m 28. I have my own service centre where i repair computers and other electronic items. I also manufacture UPS, STABILIZERS, UNDER/OVERVOLTAGE AND OVERLOAD protectors on demand. I have made various types of UPS from simple to complicated having power upto 2,000 WATTS but the problem is that they r all square wave while i need a true sine wave ups using simple circuitry and available parts. I have been working on SINE WAVE UPS for 2 years and almost succeeded but the main problem is that POWER TRANSISTORS get so hot on 200W load which means BIG HEAT SINK+COOLING FAN. If u have a good schematic or know about some site please tell me. I'll b very thankful.
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mbyka
Joined: 12 May 2002
Posts: 510
Helped: 1
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30 May 2004 13:46 sine wave ups circuit |
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http://www.edaboard.com/viewtopic.php?t=38137&highlight=apc
http://www.edaboard.com/viewtopic.php?t=65091&highlight=apc
http://www.edaboard.com/viewtopic.php?t=54743&highlight=apc
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Google
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30 May 2004 13:46 Ads |
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tryagain
Joined: 14 Jun 2002
Posts: 9
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31 May 2004 1:31 sine wave ups circuit diagram |
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In database of "service manual column" have it.
or if you like chinese,pls go to www.21ic.com forum,there have much schematics like it.
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