10-Step Sine Generator (CB24472E)

This CMOS generator with the 4018 IC was found in a November 1976 Radio Electronics magazine. It uses a 741 op-amp as the audio amplifier.

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4-Digit Digital Multimeter (CB24735E)
We found this circuit in the February 1983 issue of Radio Electronics magazine. The 4-digit...
Voltage Controlled Resistor (CB5347E)
We found this circuit in an old American documentation. It is an electronic rheostat with a...
Curve Plotter (CB18787E)
With this circuit it is possible to trace the characteristic curve of a component using an...