Protects electronic devices from power surges and voltage drops.
It is a device designed to regulate the output voltage, keeping it stable even when the input voltage fluctuates. In Thailand, household voltage is often unstable, causing problems for electronic devices such as computers, TVs, refrigerators, and air conditioners. Therefore, an automatic voltage regulator (AVR) is essential for protecting these devices.
AVR functions through an electronic control system to regulate the output voltage. If the input voltage exceeds the specified range, the AVR decreases the output voltage, and if the input voltage falls below the specified range, the AVR increases the output voltage.
Relay Type
Operating principle: Relays are employed as electrical switches to make or break the circuit of electrical devices in response to changes in the input voltage.
Servo Type
Operating principle: A servo motor drives the rotation of an autotransformer, which in turn regulates the output voltage to the setpoint.
Thyristor Type
Operating principle: Thyristors are employed as electronic switches to regulate the current flow through a resistor, thereby adjusting the output voltage to the required level.
Automatic Voltage Regulators (AVRs) come in various types, each with its own advantages and disadvantages, and are suitable for different applications. These are as follows:
Protects electronic devices from power surges and voltage drops.
Extends the lifespan of equipment
Improves the performance of equipment
Reduces energy consumption
Safe to use
Considerations when choosing an AVR
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