The varistor is a non-linear resistance element with zinc oxide as its main component. The surge current tolerance and nonlinear coefficient of the device are very large. When the threshold voltage is lower than the threshold voltage, the resistance is very high, and almost no current flows. If the

1: DC equivalent circuit analysisWhen analyzing the circuit principle, it is necessary to understand the DC path and the AC path in the circuit. The DC path refers to the static bias of each semiconductor transistor and integrated circuit when there is no input signal, that is, their static operatin

The safety capacitor has a Y capacitor and an X capacitor; the X capacitor refers to a capacitor across the L-N; and the Y capacitor refers to a capacitor across the L-G/N-G. Today, I mainly introduce the Y capacitor. Do you know how to add the Y capacitor in the non-isolated switching power supply?

First, the use of frequency conversion energy-saving equipment. With the development of China's frequency conversion energy-saving equipment, frequency conversion energy-saving equipment is more and more advanced, and many high-voltage, low-voltage and large-capacity frequency conversion energy-savi

Many people want to buy a good sound, but they don't know how to find a good sound. When choosing an audio, they may be worried. In fact, we can choose the right sound when we pay attention to one thing, that is, the audio film capacitor. . The sound quality of an audio playback is mainly determined

Film capacitors are an electronic component that is used in many home appliances and has a wide range of applications! Film capacitors have gradually replaced aluminum electrolytic capacitors. Film capacitors can be divided into two major categories, what is the role, together with the editor to und

The fault phenomenon that is easy to occur with fixed capacitors is leakage, short circuit, open circuit, poor internal lead contact of the capacitor (where the pole piece is connected to the lead). In particular, electrolytic capacitors have a much higher failure rate than other types of capacitors

Effect of temperature on capacitor life:In general, the life of a capacitor is shortened with increasing temperature, the most obvious being an electrolytic capacitor. An electrolytic capacitor with an extreme operating temperature of 85 ° C can guarantee a normal working time of 181019 hours when w

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

3. Detection of electrolytic capacitors A. Because the capacity of electrolytic capacitors is much larger than that of general fixed capacitors, the appropriate range should be selected for different capacities when measuring. According to experience, in general, the capacitance between 1 ~ 47μF can