Driver for oscillograph (T459E)

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

Automatic headlight shutdown (CB7260E)
This circuit for automotive use was found in American documentation from the 90s. The circuit uses...
Regverter CIR13912S (CB6576E)
This is the name given to the 1969 Electronics World voltage inverter. It is a series converter...
Analog Data Isolator (CB6523E)
We found this circuit in an 80's Electronic Design. It makes use of couplers of the time that can...