This circuit makes use of unusual components today. We found it in General Electric documentation from the 1980s. The circuit operates with modulated optical signals.
This simple receiver for listening on a crystal phone tunes the range of medium waves. The circuit...
This simple general-purpose circuit was found in a 1987 publication. It is a simple preamplifier powered...
The circuit shown is from a Texas Instruments opto-electronics manual. RE depends on the peak...