Found in a 1968 Novel Electronics Circuit, this circuit compares two light intensities using common LDRs as sensors. Transistors can be modern PNP equivalents.
In the figure we show the typical configuration of a shared line using a twisted pair where the...
This short circuit protection circuit accelerates the blown fuse in case of an output overcurrent. The...
Found in old documentation about neon lamps, this circuit shows how to add a simple blown fuse...