This circuit was found in a 90s Electronic Engineering. The quadruple operational amplifier can be replaced by an equivalent. RL determines the tested resistance range.
An advanced motor control software plug-in for Microchip’s MPLAB® X Integrated Development...
Found in a 1969 EDN, this circuit uses components from that time. Modern equivalent transistors can be...
This is one of the possible transistor preamp configurations in the common emitter configuration. The...