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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Traffic Light with Remote Control (CB17460E)
This circuit was found in a 1999 documentation, but it can still be easily assembled today, as the...
Absolute Value Amplifier (CB15887E)
This interesting circuit provides an output proportional to the input voltage, regardless of its...
Battery Power Monitor (CB5284E)
This circuit is based on the Linear Technology LT1495 and was found in a 2005 manual. The circuit...