The ZVS driver

Everybody who is interested in high voltage herd about  the zvs driver for the flyback transformer.
Parts:
2x IRFP250 n-fet
2x 12v zenner diodes
2x 470ohm resistors
2x 10kohm resistors
2x 400v fast diodes
1x inductor 200uH
1x 250v capacitor 0.68uF or higher

Step 1: Assembly

Mount mosfets on a large heatsink,
Solder everything togather

Comments

[Homepwner]

O.K. I built one of these on a plywood board and it worked beautifully at 24 volts from 2 car batteries. I hooked the secondary leads through A DVD disc and it exploded. I replaced every part of the first zvs driver and it didn't work, I built a 2nd, 3rd and fourth model, different methods, every time, and always new parts. Now all I get is an inductor that arcs and hisses or one of the Irfp250's heats up, ready to explode. I upgraded to 5W 470 ohm resistors,1-5 watt zener diodes, a .68uf non electrolytic capacitor rated @630 volts. I've wound 3 different inductors with different types of wire and different ferrite cores. I don't know what to do.....
anyone want to have a look at my latest proto board mounted unit?

[iTixle]

I would try using a power supply with less current. Generally, car batteries have a good deal of current available and that can lead to things popping. The reason it's not working might be that your MOSFET's are instantly frying. I don't think IRFP250's are rated for that much current. If you must use car batteries as a power supply, get some more robust MOSFET's.

[guruji1]

How much voltage and freq it gives out?
Thanks

[dog digger]

The schematic (one) does not make sense. It's just a schematic for a tesla coil

[dog digger]

oops, my bad

[Alex1M6]

Nice guide. Have you ever tried yours on 24v or higher? I find there is quite a difference between running a ZVS on 12 and on 24V.

[morphic cu ion]

no i didn't but now i want to build a supply for it

[Alex1M6]

Lead acid battery's work well for this, that is what I used.

[morphic cu ion]

yes they do but i dont have so much money to spend on a project