That takes care of the power supply polarity to the board (you might want to investigate a P Channel FET for a power protection device, it works for reverse polarity as long as you don't exceed a negative input greater than the gate/source rating).
It doesn't help the LED on the board at all.? I'm assuming more on the board than just a resistor and LED, though.
Harvey
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On 11/14/2020 7:08 PM, Bertho wrote:
Dave,
The easy, foolproof way is to add a diode bridge and it does not matter how
it is plugged in.
The drawback is that you have two extra diode voltage drops.
Bertho
