Transformerless Wideband Switch (CB6457E)

We found this chopper circuit in a 1967 publication. The transistors are of the time, and current equivalents can be used.

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Ramp Generator (CB21843E)
Found in Ferranti's 1974 transistor manual, this circuit is a self-oscillating version of the...
Audio Oscillator (CB21907E)
This blocking oscillator that appears elsewhere on this site from other sources, was found in a...
Precision Half Wave Rectifier (CB11228E)
This circuit rectifies low voltage sinusoidal signals for measurement purposes, as the circuit is of low...