A voltage - sensitive resistor is used to make a circuit efficient

Protection function of pressure sensitive resistor:

1. Surge suppression type: refers to a pressure-sensitive resistor used to suppress transient overvoltage such as lightning overvoltage and operating overvoltage. The appearance of transient overvoltage is random, non-periodic and the peak of current voltage may be large. Most voltage-sensitive resistors fall into this category.

2, high power type: refers to the continuous bursts used for an absorption cycle of pressure-sensitive resistors, for example and varistor on switch power converter, this impulse voltage cycles, and cycles, the energy can be calculated, generally the peak voltage is not big, but because of the high frequency, the average power is considerable.

3. High-energy type: refers to the pressure-sensitive voltage device used to absorb magnetic energy in large inductor coil such as generator excitation coil and hoisting electromagnet coil. For such applications, the main technical index is energy absorption capacity.

The protection function of the pressure sensitive resistor, in the vast majority of applications, can be repeated many times, but it is also sometimes used as a "one-time" protection device like a current fuse. For example, the voltage sensitive resistance with short-circuit contact connected to the load of some current transformers. Before you use it, you can learn about the above editing.

Voltage-sensitive resistors are mainly used for transient overvoltage protection, but their voltage-ampere characteristics, similar to those of semiconductor voltage stabilizers, also enable them to have a variety of functions of circuit elements, such as:

1. Dc high voltage small current voltage stabilizer element, its stable voltage can be up to several thousand volts above, which is beyond the reach of silicon voltage stabilizer tube.

2. Voltage fluctuation detection element.

3. Dc battery transfer element.

4. Pressure equalizer element.

5. Fluorescent starting element.