Beam Communicator (CB25533E)

This circuit was found in the December 1992 Radio Electronics magazine. Range depends on optical capabilities and also weather conditions.

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Low Deviation Thermocouple Amplifier (CB3940E)
The deviation of characteristics of this circuit normally referred to the temperature is very low....
Double generator (CB8943E)
Found in a 1969 Electronics World, this circuit generates low frequency signals with two...
Half Wave Control (CB6558E)
Suggested by Texas Instruments in 1968 documentation, this circuit uses components from the era....