This circuit was found in the magazine of radio amateurs 73 in a 90's edition. The components are current and the transistor is of general use.
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...