AC Tachometer (CB9353E)

This circuit was found in a 1969 EEE. It detects when there is a phase failure in a circuit using an inductive sensor.

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Linear Ramp Generator (CB4691E)
This circuit with JFET and Unijunction was found in an ancient American documentation. The...
Single Bridge Circuit (CB4798E)
This metering bridge circuit uses one power supply only. The operational ones depend on the...
Transistor Srhift Register (CB14818E)
We found this configuration in the 1964 RCA transistors manual. As indicator loads in each stage,...