Radiation thermometer (CB7242E)

Found in a 1968 Mullard manual, this circuit measures temperature by infrared radiation. The sensor is of the type that is difficult to obtain today.

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Electronic organ (CB23934E)
We found this simple toy organ circuit in the February 1968 issue of Radio Electronics magazine. The...
Magnetic Transducer Amplifier (CB13102E)
In the figure we have a practical circuit for use with a magnetic transducer. The 20 M ohms...
Linear ramp generator (CB10041E)
This circuit was found in a Motorola documentation from the 70s. The components are from the time,...