11 to 32 MHz amplifier (CB22024E)

Found in an old English publication this circuit uses a dual gate MOSFET. Coils not specified.

Up to 10 minutes timer (CB21434E)
Using a 4-layer diode, an unusual component today, this circuit was found in an American...
APS1 Series of Optical Couplers
May 2017 - Panasonic's new APS1 series of optical couplers with 3 750 V insulation and up to 50...
Phase Shift Oscillator (CB4537E)
I found this simple circuit an English magazine from 1984. The circuit can be easily assembled by simply...