Transistor breakdown (CB21393E)

This inverse transistor breakdown circuit was found in a 1967 documentation. It applies to modern components.

Gain 150 000 amplifier (CB6636E
) Suggested by Philips in a 1968 documentation this circuit has very high 10 ohm on-load voltage...
10 Second Timer (CB21421E)
This circuit from a 1966 General Electric manual makes use of an SCS. The time is given by the...
Threshold Detector 555 (CB17241E)
We can use the trigger point of 555 to detect voltage levels or thresholds, in a circuit as shown...