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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Mini Flasher (CB4416E)
This conventional slow-moving circuit uses incandescent light bulbs, but can be changed to use...
Electronic Dice (CB12221E)
This TTL dice is from an old publication from 1978, but it can still be assembled, as the...
Gate Control (CB18152E)
The purpose of this circuit is to control magnetic door locks activated by the power grid. The...