Automatic Voltage Regulator - AVR

Protects electronic devices from power surges and voltage drops.

What is an Automatic Voltage Regulator?

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.

The working principle of AVR

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.

Comparison of Different Types of CBC AVRs

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:

Benefits of using AVR

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

  • The AVR's power capacity must be adequate for the intended equipment.
  • Input and output voltage ranges
  • The efficiency of the AVR
  • It is recommended to select a high-quality AVR that is appropriate for its intended use to ensure effective protection of your electronic equipment from surges and voltage dips.

Let CBC's energy experts assist you.

Please fill out our contact form, and a member of our team will get back to you as soon as possible to discuss your power quality concerns and recommend the most suitable solution.

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