What is a varistor and its function 2

2. Power Stability: The use of varistors in transformers and power equipment can smooth out peak voltages in the power supply and provide more stable power output.diode

3. Circuit protection: In complex circuits, varistors can serve as a safety device to limit voltage and current when a part of the circuit fails, thereby protecting other components.

4. Surge absorption: Varistors can absorb a large amount of energy, so they can be used to protect circuits from transient voltage surges, such as those caused by lightning strikes.diode

5. Reduce noise: Due to their ability to operate at high voltages, varistors can be used to filter out high-frequency noise in circuits and improve signal quality.diode

6. Automotive electronics: In automotive electronics, varistors are used to absorb voltage spikes generated during vehicle start and stop, protecting onboard electronic devices.diode

The working principle of varistors is based on their nonlinear voltage current (V-I) characteristics. Under normal operating voltage, varistors exhibit a high resistance state, with minimal impact on the circuit. However, once the voltage exceeds its predetermined "breakdown" voltage diode