This protection circuit trips by quickly blowing the fuse in the event of an overcurrent. The circuit is from a 1964 Electgronic Design. The transistor can be general-purpose.
This circuit is from a 1995 publication. The components are all common and the number of LEDs may...
This circuit, found in a 1995 documentation, is intended for switching composite RGB video signals...
This circuit is from Motorola's Linear Interface ICs of 1993. The integrated circuit is not common...