Regulating cct for DC inductive load - has series resistor measuring supply current for load current indication and regulating transistor control

摘要

The regulating circuit for direct current inductive loads, has a resistor in series with the regulating transistor that connects the direct current supply to the load circuit. The resistor voltage is used as a measure of the supply current for the current adjusting element and is applied to a differential amplifier. The amplifier output is passed to a circuit that converts the actual current being supplied into a quantity proportional to the actual load current. This circuit consists of a shunt capacitor and a series resistor bridged by a diode, and its output is passed to the amplifier that controls the regulating transistor.