RF PBR 300X2

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Hexhclass

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Joined 2010
The PS FETs IRF1404z and drive circuit burnt.Anyone know the the value of R81/82 gate resistor.Amp has four PS FET,two of them have gate resistor and the other two don't used.The gate seems to be connected to a diode and high value resistor.
Any one can tel me how it functions?
Any other FET i can used for test or sub?
 

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