MOSFET short-circuit protection

If you have an application in which a MOSFET is already used to switch a load, it is relatively easy to add short-circuit or overload protec...

Simple Remote Control Tester

Nearly always when a remote control doesn’t work, the underlying problem is elementary: the unit does not emit light. The cause may be dry s...

Gentle Battery Regulator

This trivial but very efficient circuit protects a run-acid battery (12-in opposition to solar battery otherwise car battery) critical of ov...