[Elecraft] KPA500 fault at H44KW (no pwr high SWR)
wa9fvp
repair at willcoele.com
Sun Nov 2 16:25:17 EST 2014
Hi fred,
The parameter is Rds(on),max The IRFSL9N60A is .75 ohms at 9.2 amps and the
IPA50R399CP is .399 ohms at 9 amps. Q4 and Q5 are in series with a 100 ohm
resistor and the diode so the difference in the R DS(on),max has little
effect.
Jack WA9FVP
Willco Electronics
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Jack WA9FVP
Sent from my TRS-80 :-)
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