Found in the September 1992 issue of Radio Electronics magazine. This circuit generates pulses that are determined by C3. The circuit has output pulse intensity and timing adjusted by R6.
This old slide projector control circuit was found in an 80s Hands On. The circuit uses modern...
In the figure we have a circuit that uses unusual components, being indicated for low frequency...
The sensor of this circuit found in Popular Electronics can be formed by a piece of fabric between two...