Sawtooth oscillator (CB21816E)

This transistor circuit was found in Mullard's 1960s transistor manual. The transistors are germanium from the time.

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Phototransistor Sensitive Detector (CB24485E)
This circuit uses two transistors in a direct coupling configuration and directly activates a...
TTL Function Generator (CB18884E)
This voltage-controlled function generator circuit was found in ancient European documentation. The circuit...
Complete binary counter (CB24245E)
This is the complete circuit of a binary counter for educational purposes. Found in the February 1973...