Hello List,

I have realized an alarm for my bycicle using a 12C508. It is powered by two AA
size alkaline battery.

I would like to know if there is a simple (and economic!!) solution which
I can use to protect my circuit against polarity inversion during battery change
.
(I know it's a remote possibility, but it exists)

I thought to use a serie diode, but the voltage drop bring the PIC power voltage
near the power supply limit of the MCU.

Thanks.


Best regards,
Michele

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