Power Darlington Stage (CB22365E)

This circuit is an alternative to using Darlington power transistors in the previous amplifier. The power is a few watts.

Synchronized Triac Switch (CB26127E)
This zero-crossing circuit was found in the 1989 Radio Electronics Experimenter. The Triac must be...
Audio peak indicator (CB21972E)
The basis of this 90s circuit is a CA3130 operational amplifier. The circuit does not need a...
Zener Diodes Test (CB12497E)
This circuit, found in a 1979 documentation, consists of a small inverter that applies a voltage to...