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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Wiper Water Sensor (CB4968E)
The purpose of this circuit is to sense the water level in the windshield wiper reservoir. The circuit...
Parallel Port Interface (CB25730E)
The circuit illustrated in Figure allows external loads (8) to be driven from parallel port...
Volume limiter (CB25287E)
This circuit for audio signals was found in the March 1990 Radio Electronics magazine. The circuit...