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.
We found this circuit in a 1977 publication. With it we can test general purpose operational...
Lamps in the range between 20 and 50 mA can be used. Voltage supply is according the lamp and...
This 100 kHz crystal controlled oscillator was found in an American 1980s documentation. The...