Driver for oscillograph (T459E)

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

Two-transistor regenerative receiver (CB20568E)
Details of the coil of this two-transistor generative receiver were not given. We found it in a...
Instrumentation Amplifier TL082 (CB901E)
This very high input impedance circuit is suggested by Texas Instruments. The circuit can be...
High Speed Buffer (CB4991E)
This circuit from an 80's publication also features low input capacitance. FET can be a modern...