This dual clock generator appeared in the February 1972 issue of Radio Electronics magazine. It is intended for project bench or educational applications and uses TTL logic.
Photoelectric cells can be used as sensitive light sensors. However, the low voltage they generate...
With the illustrated circuit we can run a DC motor in one direction or the other, depending on...
In this circuit the relay triggers on when light falls onto the sensor, a common LDR. Power supply...