Full wave dimmer (CB7208E)

Found in Motorola's 1965 manual, this full-wave dimmer controls a load that depends on the used SCR. The trigger element is a neon lamp.

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Optical direction discriminator (CB8079E)
Found in American documentation from the 90s, this configuration detects the direction of rotation...
SCR Charger CIR13730S (CB6397E)
Circuits similar to this can be found in this section. This is from 1967 General Electric...
LED Indicator (CB14962E)
This circuit uses two transistors and can be powered by just two small batteries. The frequency is given...