Driver for oscillograph (T459E)

This circuit from an old MIT documentation excites an oscillograph element, an old waveform viewer.

Ultrasonic repellent (CB9384E)
Found in Radio Electronics from the 90s, this circuit is based on the 555 directly feeding a small...
Oscillator with common drain (CB8057E)
This 1 MHz oscillator was found in an Electronics World of 1969. The circuit uses a...
Reversible Ring Counter (CB6598E)
This circuit was found in a 1966 General Electric documentation. The circuit makes use of PUTs...