This circuit was found in General Electric documentation from the 1980s. The circuit is intended to receive 50 kHz modulated optical signals. The components support modern equivalents.
This circuit was found in a 1960 transistor manual from Sylvania. It measures the intensity of...
This circuit is from the LM3914 manual and can be found elsewhere on this site and from other...
Found in documentation from the 1980s, this circuit makes use of general-purpose diodes and...