power inverter

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You are dealing with a very dangerous project. At 120v AC (170v peak) you have the equivalent of a power outlet in your possession. Just because you think the device runs on batteries, it will still kill you. It only takes about 8 watts to kill you.
Give it a miss. (pun intended)
 
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the second one looks like it will work. I think the frequency is determined by the matched R3-C2 and R4- C1 but the inductance of the transformer may also have an impact. You will not get exactly 60 hz.

Heed collin55's warnings on the high voltage side.

tjwal
 
The 12VDC to 120VAC inverter does not work:
1) Its timing capacitors are with their polarity backwards which causes them to blow up.
2) Its transistors have avalanche breakdown in the simple circuit which wastes a lot of power and blows up capacitors even if their polarity is correct.
3) The base current for the transistors is way too low for power.
4) The output is about 25W with a low output voltage.
the output voltage is a square-wave. Many electronic products will not work properly from a square-wave since they are designed for a sine-wave that has a much higher peak voltage.
 
inverter


Does anyone have a circuit of a simple inverter that does work?
 
Both those Fluoroescent circuits are my design and they operate at approx 50kHz. The output voltage is about 700v to "kick-start" the cold tube.
What are you wanting to do?
 
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