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Aaron Cake
Administrator

Canada
6702 Posts

Posted - Jan 02 2010 :  5:28:56 PM  Show Profile  Visit Aaron Cake's Homepage  Send Aaron Cake an ICQ Message  Send Aaron Cake a Yahoo! Message  Reply with Quote
I just corrected a few errors in four of the circuits:

-Capacitors are no longer backwards on Inverter
-Ground added to power section on 12V to 24V DC-DC converter
-Power supply now includes note about using 120 ohm resistor instead of 240 ohm
-Op amp pin polarity corrected on low voltage alarm

pebe
Nobel Prize Winner

United Kingdom
1078 Posts

Posted - Jan 03 2010 :  11:47:33 AM  Show Profile  Reply with Quote
The bases of 2n3055s are rated for -7V max, yet this circuit still applies over -20V to them. So it's still crap!
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audioguru
Nobel Prize Winner

Canada
4214 Posts

Posted - Jan 03 2010 :  3:10:05 PM  Show Profile  Reply with Quote
The base current for the 2N3055 transistors in the inverter is much too small for it to make any reasonable amount of power.
Yes it is crap!
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Aaron Cake
Administrator

Canada
6702 Posts

Posted - Jan 09 2010 :  11:08:26 AM  Show Profile  Visit Aaron Cake's Homepage  Send Aaron Cake an ICQ Message  Send Aaron Cake a Yahoo! Message  Reply with Quote
Yep, the circuit still sucks. One of these days I will get around to looking through the large inverter topic and picking a few good ones for inclusion on the circuits page.
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