Because some electrical appliances contain coil components, eddy currents that hinder the current will be generated at the initial stage of energization. The generation of eddy currents will not only weaken the instantaneous voltage when the appliance is started, resulting in slow startup, but also strengthen the instantaneous voltage generated after the circuit break, which may cause spark damage Circuit. At this time, an LED-type regulator is needed to protect the normal operation of the circuit.
The LED regulator is composed of a voltage regulating circuit, a control circuit, and a servo motor. When the input voltage or load changes, the control circuit will sample, compare, and amplify, and then drive the servo motor to rotate to make the regulator carbon brush position Change, by automatically adjusting the coil turns ratio, so as to maintain the stability of the output voltage. Large-capacity LED regulators also work on the principle of voltage compensation.
