Single Pulse Generator (T1740E)

This benchtop equipment was found in Radio Electronics magazine from April 1960. The two double valve circuit is powered from mains power.

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Single transistor receiver (CB22568E)
This receiver was found in the Radio Electronics magazine of March 1953. It tunes to the medium wave...
Water Level Control (CB16953E)
This circuit was found in a 1990 publication. The sensors are electrodes placed in the water tank...
Rectangular to triangular converter (CB24194S)
The figure shows how to convert a rectangular signal into a triangular signal using an integrator. The...