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  #15   IP: 107.77.97.101
Old 06-05-2020, 03:04 AM
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lat 64 lat 64 is offline
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size matters

Thanks Ed.

Nice Joe,
I see little wires. Are those for LEDs too?

I protected my ammeter and voltmeter with 1-amp fuses. I wonder; is there resistance in the fuse that might drop the voltage(50 millivolts in this case) to the meter, thus changing calibration with the matching shunt?

After I made this panel, I learned that my father-in-law was putting in the same ammeter in his experimental airplane. I thought "cool! we have something in common, something to talk about"
He fried two meters while sorting out an issue with the shunt that was too small. I guess with the whole airplane's electrical system switched on and the alternator charging a low battery, it was too many amps. It melted the shunt and then took out the meter. At least I think that was the sequence.
I tried to interrogate him about what went wrong, but only got an icy stare.
Never interrogate a father-in-law.

So now I'm mister smartypants about correct shunt size and stuff. At least until my setup starts smoking.
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Last edited by lat 64; 06-05-2020 at 03:06 AM.
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