Driver for oscillograph (T459E)

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

Photoelectric Flasher (CB1303E)
When the illumination decreases, this multivibrator starts up, causing the lamp to blink at a...
CMOS Zero Crossing Detector (CB20625E)
The operation of this circuit is old, but the configuration can be elaborated based on modern...
Automatic light (CB22105E)
This circuit activates an incandescent lamp when the light stops falling on the sensor. The...