i am building an aleph 5 and am beginning to match the fets. i have a 13.8 vdc power supply and am using a 10 ohm 10 watt source resistor. i start to get ~4 volts across the fet and then it increased to 13.8. i am using a heatsink for the fet but it still heats up quite a bit. i'm stumped, i used the pass fet matching scheme posted for the A-75. can anyone help? i'm sure that i'm doing something really stupid, i just don't know what.
thanks
thanks
Are you sure you didn't roast the MOSFET?
The Aleph designs run pretty hot. The heatsinks will have to be larger, accordingly.
Grey
The Aleph designs run pretty hot. The heatsinks will have to be larger, accordingly.
Grey
The A75 scheme will work fine.
The devices will warm up with the test, and even
get hot, since they are running at 4 watts or
so during test.
I am confused when you say you get 13.8 volts,
which sounds like the MOSFET opened up.
The devices will warm up with the test, and even
get hot, since they are running at 4 watts or
so during test.
I am confused when you say you get 13.8 volts,
which sounds like the MOSFET opened up.
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