Re: Push pull generator.

Database ID: 108673
2018-07-05T15:03:28+00:00
Douglas Konzen <[email protected]>

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Hi Sven
 Use thin magnet wire wrapped inside tiny ferrite tubes  just a few turns ,maybe 4 turns....use very thin magnet wire around 28 or 30 GA  thickness (thin)...then connect this wire to mosfet gate.
 Also they say to include in series a low ohm resistor too, such as 5 ohm 1/4W size to help dampen any ringing...the ferrite squelches the HF stuff, the resistor the LF stuff is what I understand.
 Maybe your mosfets do not turn off fast enough, this would make for excess heat that is for sure!....are you using a driver chip to the mosfets??
 Try 4421 or 4422 types...
 Also if no drivers feeding the gates, you better for sure have a 10K "pull sown" resistor stretching across mosfet  from gate to source on the mosfet....I like to include the 10K resistor even if using a 4422 or 4421 driver chip just to be double safe....
 Kone
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