post 1283 page 43
Hi Guruji,
I use a ZVS driver and it works well. the mosfets don't get warm and the output is a sinewave.
This is the link.
Teravolt.org - ZVS Driver
You can vary the capacitor of .68UF and the turns on your FB to achieve the frequency you want. And if you also want to vary the output voltage you can vary the 12V input voltage by means of a BUZ11 mosfet which is setup as a variable resistor. In this case you should not forget to put a 1N4007 diode across the driver circuit to protect the mosfet against the high bemf voltage in the usual manner.
The driver circuit is then connected to the source of the BUZ11. The 12 Volt to the Drain and the gate to slider of a potentiometer of about 100k Ohms. The other ends of the potentiometer the +12V and th 0V.
regards
FEhunter
Originally posted by Guruji
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I use a ZVS driver and it works well. the mosfets don't get warm and the output is a sinewave.
This is the link.
Teravolt.org - ZVS Driver
You can vary the capacitor of .68UF and the turns on your FB to achieve the frequency you want. And if you also want to vary the output voltage you can vary the 12V input voltage by means of a BUZ11 mosfet which is setup as a variable resistor. In this case you should not forget to put a 1N4007 diode across the driver circuit to protect the mosfet against the high bemf voltage in the usual manner.
The driver circuit is then connected to the source of the BUZ11. The 12 Volt to the Drain and the gate to slider of a potentiometer of about 100k Ohms. The other ends of the potentiometer the +12V and th 0V.
regards
FEhunter
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