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18th August 2002, 10:15 PM
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#1 |
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Account Disabled
Join Date: Jul 2002
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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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19th August 2002, 12:13 PM
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#2 |
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diyAudio Member
Join Date: May 2002
Location: wheeling illinois
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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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19th August 2002, 12:59 PM
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#3 |
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Account Disabled
Join Date: Jul 2002
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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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19th August 2002, 04:39 PM
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#4 |
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diyAudio Member
Join Date: May 2002
Location: wheeling illinois
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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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19th August 2002, 04:59 PM
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#5 |
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Account Disabled
Join Date: Jul 2002
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like this??
and is work good???? is normal a 1K ohm resistor?? |
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19th August 2002, 06:14 PM
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#7 |
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Account Disabled
Join Date: Jul 2002
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it is simple inverter....... is dont give 50/60 Hz ...
kevin gilmore u can answer me???? |
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19th August 2002, 07:01 PM
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#8 |
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diyAudio Member
Join Date: May 2002
Location: wheeling illinois
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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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19th August 2002, 07:13 PM
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#9 |
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Account Disabled
Join Date: Jul 2002
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sooo the "FIX 2" work or not? or the "FIX 1" is better??
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19th August 2002, 09:41 PM
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#10 |
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Account Disabled
Join Date: Jul 2002
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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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