Basic Principle Of Automatic Voltage Regulator

There are many types of Automatic Voltage Stabilizer, and the working principles of the main circuits are different, but basically (except for AC parameter voltage regulators) they are basically input switch sampling circuit, control circuit, voltage
regulator, output protection device, drive device, display and composition

1. Input switch: As the input working switch of the voltage regulator, a limited current protection air switch type small circuit breaker is generally used, which can protect the voltage regulator and electrical equipment.

2. Voltage regulator: It is a device that can adjust the output voltage. It can increase or decrease the output voltage and is the most important component of the voltage regulator.

3. Sampling circuit: It detects the output voltage and current of the voltage regulator and transmits the output voltage change to the control circuit.

4. Drive device: Since the control electrical signal of the control circuit is weak, a drive device is needed for power amplification and conversion.

5. Drive protection device: A device that connects and disconnects the output of the voltage regulator, generally using relays or contactors or fuses.

6. Control circuit: It analyzes the sampled circuit detection model. When the output voltage is high, it sends a control signal to the drive device to reduce the voltage, and the drive device drives the voltage regulator to lower the output voltage. When the output voltage is low, it sends a control signal to the drive device to increase the voltage, and the drive device drives the voltage regulator to increase the output voltage, so that the output voltage is stabilized to achieve the purpose of stable output.
When it is detected that the output voltage or current exceeds the control range of the voltage regulator. The control circuit will control the output protection device to disconnect the output to protect the electrical equipment. In normal conditions, the output protection device is connected to the output, and the electrical equipment can be supplied with a stable voltage.