What electronic component is ZNR?

znr is the abbreviation of zinc oxide nonlinear resistor, which means zinc oxide nonlinear resistor, that is, varistor; the main component is zinc oxide main material and various additives such as bismuth oxide and silicon oxide, which are sintered at high temperature ; Used for lightning arresters, surge energy absorption in circuits, overvoltage protection, etc.

The operating environment of this tutorial: Windows 7 system, Dell G3 computer.

What kind of electronic component is znr?

1.ZNR (abbreviation of zinc oxide nonlinear resistor), zinc oxide nonlinear resistor, that is, varistor.

The main components are zinc oxide main material and various additives such as bismuth oxide and silicon oxide, which are sintered at high temperature. Used for lightning arresters, surge energy absorption in circuits, overvoltage protection, etc.

2. The role of the varistor:

is generally used in overvoltage protection circuits. For example, if your load is too heavy and the output voltage is too large, the resistance of the varistor will change. It is very small, and most of the current will flow through it. It is usually connected in parallel in the circuit. Also, when the input voltage is unstable and there is a strong surge, it can approximate a short circuit to the ground and filter out the surge. After the surge, it can return to normal. This is a simple overvoltage protection in switching power supplies. For more related knowledge, please visit the

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