This circuit, which appears elsewhere on this website, was obtained from 1967 General Electric documentation. All semiconductors used are uncommon today.
We found this simple circuit with headphones listening in Radio Electronics magazine from March...
Found in a 1970 EEE, this circuit uses general-purpose transistors of the time. Transistors support...
The amplifier gain shown in the figure is given by R1. The circuit is valid for other photodiodes and is...