Asymmetric bistable (CB21812E)

This circuit is from the 1960 Mullard transistor manual. The transistors are germanium from the time.

Peak Voltage Detector II (CB19403E)
This circuit is a little more elaborate with the previous one (CB19402E). The operational...
Remote volume control (CB23927E)
This wired control circuit serves both volume and balance between channels. We found it in Radio...
2 MHz comparator (CB6500E)
This circuit was obtained from an Electronics Design of 1964. The circuit makes use of tunnel...