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 found in a 1966 General Electric documentation. The circuit makes use of PUTs...
This circuit is a variation of the previous one (CIR10372) with a feature that allows the constant...
This precision circuit can be implemented with other operational ones. We found it in a...