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Registered Member #3340
Joined: Wed Oct 20 2010, 07:28PM
Location:
Posts: 69
So i am currently building a ZVS driver which is going to be powered by a car battery or a computer power supply, i would like to know which model of MOSFET will be more apropriate for it? I can currently by the IRFP460 one and the IRFP250N one.
Registered Member #1408
Joined: Fri Mar 21 2008, 03:49PM
Location: Oracle, AZ
Posts: 679
I have tried all sorts of chokes working my way through various levels; however I always used a toroidal (and rather a heavy shape design). I agree that those simply aren't appropriate for the current. The ZVS design is made for high current. In fact if you aren't using about 5A or better; your results will be the same as many simplistic designs. What has been helpful is knowing that the 470ohm resistors need to be at minimum 3watts (the 10k can be little 1/2W),connections short as possible. Efficient, well designed heat sinks & insulation for the MOSFETS, and the "output" capacitor as high quality, non-electrolytic are a fairly mandatory assembly issue(s).
Registered Member #3340
Joined: Wed Oct 20 2010, 07:28PM
Location:
Posts: 69
Well, i was going to power the whole circuit with a SLA car battery but the cost will be very high, so now i am considering a computer PSU as my power supply. As for the caps, i have ordered these ones. I think they are ok. But my main concerns still are the primary and the inductor. I can't seem to find the appropriate wire for the primary nor a toroidal inductor.
quicksilver wrote ...
What has been helpful is knowing that the 470ohm resistor
By the way i don't see a 470ohm resistor in my schematic. It has only 2 10Kohm and 2 1Kohm@5W.
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ZVS
