[sdiy] circuit protection question

[Steve Ridley]

> I'm thinking: power rail, to polyfuse, to reverse rectifier diode (e.g.,
> 1N4001) to ground, to circuit. The diode will protect the circuit while the
> polyfuse trips. Does this seem like overkill?


I like to use 1.5KE transient suppression diodes - the unidirectional version. Protects against reversal, spikes and overvoltage. Cheap insurance.


Steve