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 45 to 90 Hz hum elimination circuit was obtained from a 1980s documentation. The operational can...
The resistors R1 and R2 consist of 8 220 ohms x 2 W resistors connected in parallel. The...
Found in 90's Electronic Engineering this circuit can be used to measure phase angles between two...