Unijunction SCR Trigger (CB21469E)

This unusual unijunction transistor SCR firing circuit was found in a General Electric documentation from the 1960s.

15 A Regulator LM123 (CB14510E)
The LM123 integrated circuit is manufactured by several semiconductor industries and is therefore...
Gain 100 Amplifier (CB14023E)
This circuit is from the Texas Instruments operating amplifier manual. Any operational can be used...
AM Modulator MC1556G (CB14561E)
The presented circuit uses a component that is not very common today. We found this modulator...