Specifications
The Varistors have several specifications to consider when selecting them for a specific application:
- Voltage Rating (VAC/VDC): The maximum continuous voltage the varistor can withstand without the breakdown.
- Maximum Clamping Voltage (VCL): The voltage at which the varistor conducts significantly.
- Peak Current Rating (IPEAK): The maximum surge current the varistor can handle.
- Energy Rating (Joules): The energy absorption capability of the varistor.
- Response Time: The time it takes for varistor to respond to an overvoltage condition.
What are Varistors ?
A Varistor is an electronic component designed to protect electrical circuits from excessive voltage surges or transients. It is a nonlinear resistor whose electrical resistance varies significantly with changes in voltage. Varistors are commonly used to safeguard sensitive electronic devices and equipment by diverting excess voltage away from them.
Varistors are frequently employed in parallel with the devices or circuits they are designed to safeguard. When there is a voltage spike, the varistor effectively “clamps” the voltage at a safe level, keeping it from reaching the protected components. The varistor recovers to its high-resistance state after the surge has passed.
Table of Content
- Definition
- Varistor Symbol
- Packages
- Construction of Varistor
- Types of Varistor
- Operation and Characteristics Graph
- Properties of Varistors
- Characteristics of Varistors
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