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Re: Reverse polarity diode circuit


 

There are two power supply pins going into the uBitx and BItx40.
Put your 1A diode plus a 0.5A fuse in series on the wire that powers the main board and the Raduino.
The main board and Raduino should work fine at 11v or less.
Better yet, use a LM2940CT-12 voltage regulator to avoid excessive voltages into the main board.
? ??/g/BITX20/message/39072

No need for a diode on the power to the IRF510 drains, just a 3A fuse.
If power to the IRF510's is reversed, the intrinsic diode in the IRF510 will conduct from source to drain
and blow the fuse.? You probably don't want to suffer the voltage drop across a diode for the IRF510's
anyway, as that would reduce your power out.



On Sun, Jan 21, 2018 at 04:49 pm, Steve Thatcher wrote:
Hi gang.? I'm planning to install the diode in series with the V+ and then a fuse.? I only have a 1N5819 in hand.? I searched the data sheets for this compared to the 1N4002(7), and, even though I finished in the 50 percentile of my E101 class 5 years ago, hi hi, I can't tell if this will work.? Suggestions?? Thanks, Aloha, Steve WH6ST

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