Driver for oscillograph (T459E)

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

Ramp Generator (CB392E)
This circuit sources a ramp signal with characteristic given by the diac. The circuit is powered...
5 V Stabilizer with the 741 - I (CB1175E)
This circuit shows how to get 5 V under low current from an operating amplifier 741. I got this...
Fast Power Supply Protection (CB5886E)
This protection circuit for sources up to 20 V was found in a 1980s documentation. The circuit...