This interesting circuit of the 50s uses a fluorescent lamp to obtain a stroboscope useful for the rotation of motors. The circuit uses a power valve to control the 10W fluorescent lamp.
Other voltage comparators can be used in this circuit that we found in a Popular Electronics from...
Published in a February 1978 Radio Electronics magazine article, this digital circuit uses some of...
This circuit was obtained in an English magazine from 1980, but it can be easily assembled today....