The main parameters of varistor are nominal voltage, voltage ratio, control voltage, residual voltage ratio, current capacity, leakage current, voltage temperature coefficient, current temperature coefficient, voltage nonlinear coefficient, insulation resistance, static capacitance and so on. Genera

The PTC thermistor for overcurrent protection is a protection element that automatically protects and automatically recovers abnormal temperature and abnormal current. It is commonly called "self-resetting fuse" and "10,000 times fuse". It replaces the traditional fuse and can be widely used for ove

1. The current in the range is not properly selected.The current in the range is improperly selected, and more positions are generated by the DC sustain and the simple harmonics. If the current value required by the essence is larger than the allowable current value of the film capacitor, the film c

Nowadays, film capacitors have been slowly integrated into our lives. From small household appliances to large industrial electronic devices, film capacitors are inseparable. It has shown an increasingly strong momentum in the capacitor industry, and the market is increasingly demanding him. Therefo

The varistor is a protective component that is currently used in lightning protection and surge protection of the power supply system. Its response speed, flow capacity and protection level are recognized. Since the failure mode of the varistor is mostly short-circuited, a short circuit in the syste

1. Using a thermistor in the battery circuit, you can detect excessive current or current overheating to adjust the rate of charging. As a result, the current at the time when the battery starts to be charged is relatively large, so that it can be quickly charged with a large charging current in a r

As a kind of electronic component used in audio, speaker and other fields, film capacitor is necessary for its correct understanding. When purchasing, avoid the following misunderstandings: 1. The bigger the capacity, the better.Many people think that when choosing a film capacitor, the larger the c

Thin film capacitors have excellent electrical characteristics, high stability and long life, and are used in various industries, but even if the film capacitor performance is high enough, capacitor manufacturers continue to improve the manufacturing process to provide in a smaller package size. Lar

The varistor is a voltage-limiting protection device that utilizes the nonlinear characteristic of the varistor. When an overvoltage occurs between the two poles of the varistor, the varistor can clamp the voltage to a relatively fixed voltage value. Realize the protection of the latter circuit. The

In the working principle of the circuit, it can be known that there is a product using NTC thermistor. Under normal working conditions, there is a certain current flowing through the NTC thermistor. This working current is enough to make the surface temperature of the NTC reach 100 ° C ~ 200 ° C. .