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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Low active cycle pulse oscillator (CB8920E)
Short pulses can be found in this 90's EDN circuit. The load is 50 ohms and the transistors are from that...
1 to 20 MHz TTL Oscillator (CB6514E)
Found in an American 1980s documentation, this circuit generates frequencies in the range...
Push Pull Output Amplifier (CB950E)
This old configuration of an audio amplifier has a push-pull two-transistor output stage. Output...