Triac driver (CB22446E)

The presented circuit uses an optocoupler to trigger a triac. We found it in a Popular Electronics from 1992.

2 to 30 V x 2A power supply (CB17375E)
This power supply was found in a 2000 documentation. It can supply currents from 2 A to 15 V and 1...
Metronome (CB10607E)
We found this circuit in a Radio & Electronics Constructor of November 1975. The magazine no...
2 W Modulator (CB14809E)
This circuit is designed to modulate small AM transmitters with the same power order. The circuit is...