Radar detector (CB8628E)

Found in a 90s Electronics Engineering, this circuit makes use of components of the time. The critical component is the microwave sensor diode.

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Sensor with thermocouple for Celsius scale (CB10175E)
This calibrated circuit was found in documentation from the 1980s. It makes use of an integrated circuit...
Triac Switch (CB25869E)
This triac synchronized circuit was found in the July 1995 issue of Electronics Now magazine. The...
Instrumentation Amplifier (CB4939E)
This high input impedance circuit makes use of two operational ones that are still common. The...