Transistor gain meter (CB20522E)

This circuit was found in a publication in the 1950s, mainly applying to germanium transistors of the time.

Power grid Carrier Receiver (CB5066E)
This circuit can be used in a power grid remote control project with the coil according to the...
MAX77874 Quad Phase Buck Controller - Maxim
High performance 16 A Buck regulators capable of operating at 2.7 to 4.8 V voltages and 0.25 to...
Fast Power Supply Protection (CB5886E)
This protection circuit for sources up to 20 V was found in a 1980s documentation. The circuit...