volton

147

01:14:03

Circuit to maintain power to a 12volt fridge in a car from a permanent  power outlet but to switch off if battery drops to 12.5 volts, so avoiding flattening the battery but still allowing the fridge to stay powered if the car's engine is stopped for a long time. Unit switches on at 13.5 volts and switches off at 12.5 volts. 5volt ref is a voltage reg and the supply can be adjusted from zero up to 15 volts (and beyond)

published 10 years ago

Johnsonutpb

10 years ago

I like seeing this and will study it soon, thanks for the contribution... i hv similar idea of usage for a diff circuit http://everycircuit.com/circuit/5899213083770880

tectak

10 years ago

You will need a resistor, 47k0 ish base to ground to prevent leakage current in the real world.

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