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.
We found this circuit in an American 80's documentation. The circuit can be adapted to function as a...
This 80's circuit, suggested in Texas Insrtruments documentation, uses a Hall effect sensor. The...
This interesting benchtop circuit was found in the May 1977 issue of Radio Electronics magazine. The...