This filter was found in an American publication from the 1980s. The circuit can be implemented with any operational amplifier. The power supply must be symmetrical.
This circuit was taken from a Popular Electronics from January 1967. Transistors are from the...
Found in a 1967 publication by General Electric, this SCR circuit generates voltages of 120 VAC at...
The critical point in this project is the adjustment of the optical system, mainly to avoid...