three-level touch control (CB7040E)

Found in Popular Electronics this circuit uses common components to control an incandescent lamp with three levels of intensity

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10 A Bidirectional Current Sensor (CB5261E)
With this circuit it is possible to monitor the charge and discharge of a battery. The circuit is...
Solid state relay (CB8395E)
Found in 90s Radio Electronics, this shield can control high voltage loads in the power grid....
IR Monostable (CB874E)
The duration of the output pulse in this circuit depends on C. This capacitor can have values in...