This circuit simulates a resistor controlled by digital signals. We found it in American documentation from the 90s. The basic component is a CMOS 4016 or 4066 digital switch.
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...