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Registered Member #618
Joined: Sat Mar 31 2007, 04:15AM
Location: Us-Great Lakes
Posts: 628
Hey folks,
With the recent repetitive failure of mosfets on my SSTC I added some Zeners (back-to-Back) and put the Mur860's back in, But I can only get the coil to arc when I charge teh 470uF filter cap for the power section, then disconect the wall plug and turn on the driver circuit, which obviously only causes a power on spike and discharges the filter cap.
So for the actual question with Zener diode protection on the G-S What is a value for Zener diodes to be placed there 30V or Can I use 20V since the Max G-s'V I believe for the fets I have is 25V max.
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Zener Diode G-s Limit
