Found in a 80s American documentation, this circuit pulses a lamp for optical relay tests. The circuit can be modified to trigger a high brightness white LED.
Suggested by General Electric in a 1965 publication this circuit uses a light bulb. Can be changed...
The oscillator shown in the figure generates a 1 kHz tone that is reproduced on the speaker with...
The purpose of this circuit is to restore the 0 V black level of an analog TV video signal at the...