Hello all, I would like to built power supply board for my arduino, there must be include battery backup supply. Thats why I decided to use simple gate of two diodes to select which supply is active ( higher of course :slight_smile: Second task is to protect SLA battery from under-voltage. So my …

Battery under-voltage cut-off TTL control

system April 17, 2014, 7:23pm 4

Last version...standard NPN transistor replaced by N channel mosfet.
Please somebody write something to me :)))

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