I use a 16 amp large blade size automotive fuse to protect my Corsair
II. So far I've blown two or three, no PA transistors.
I built a relay into my power cord for reverse polarity protection and
for power switching using the internal switch. For polarity protection I
put a diode in series with the relay coil so that it only works for
proper polarity. I put a diode across the coil for inductive kick
protection (which also helps in polarity protection). I used a 30 amp
automotive cubic inch accessory relay.
73, Jerry, K0CQ
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Entire content copyright Dr. Gerald N. Johnson, electrical engineer.
Reproduction by permission only.
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