This simple blown fuse monitor circuit for DC circuits uses an inverter amplifier or even a voltage comparator. The circuit drives LEDs and can operate with voltages from 5 to 16 V.
With the circuit shown it is possible to measure very low resistances, of the order of fraction of ohm,...
The operational amplifier used in this circuit is no longer common on the market, as the circuit is...
The circuit shown in the figure makes use of an LM3909, a low consumption and low voltage IC. The...