I Have a big problam !!......with Inverter 12VDC to 220VAC - diyAudio
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Old 18th August 2002, 10:15 PM   #1
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Exclamation I Have a big problam !!......with Inverter 12VDC to 220VAC

in my project the capacitors always overheat and explode ( i us in 160V 68uF ) what can i do that the capacitors don't overheat and explode....????


the parts:
R1,R2 = 10 ohm, 5 watt
R3,R4 = 180 ohm, 1 watt
C1,C2 = 68uF, 50 Volt (or higher volt)
D1,D2 = 1N4002
Q1,Q2 = 2N3055
T1 = 220 / 24ct Transformer
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Old 19th August 2002, 12:13 PM   #2
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Location: wheeling illinois
The way i used to build these, C1 and C2 did not exist.
The base resistors were 1k and went to the collector of
the other transistor.
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Old 19th August 2002, 12:59 PM   #3
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i dont incomprehensible your explanation on the inverter...
u can post a circuit or painting of this??

if is work thanks u!!!!
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Old 19th August 2002, 04:39 PM   #4
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Delete R3, R4, C1, C2

Tie resistor 1K from base of Q1 to Collector of Q2
Tie resistor 1K from base of Q2 to Collector of Q1
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Old 19th August 2002, 04:59 PM   #5
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like this??
and is work good????
is normal a 1K ohm resistor??
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Old 19th August 2002, 05:30 PM   #6
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I don't see how you get a 50/60 Hz sinewave out of this...
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Old 19th August 2002, 06:14 PM   #7
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it is simple inverter....... is dont give 50/60 Hz ...
kevin gilmore u can answer me????
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Old 19th August 2002, 07:01 PM   #8
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Location: wheeling illinois
You probably want to delete R1, R2, D1 and D2 too.

Its about 50/60 hz, and is definitely NOT a sine wave.
Exact frequency depends on the transformer.

Very similar to the heathkit inverters of years ago...

What do you want to do with it???

With the transistors specified it is good for about 200 watts
max.
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Old 19th August 2002, 07:13 PM   #9
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sooo the "FIX 2" work or not? or the "FIX 1" is better??
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Old 19th August 2002, 09:41 PM   #10
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this is work well?? i need it for home AMPLIFIER to put in a car...
my amp need 280W
and if i change the 2N3055 in 2N3771 is out more power?
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