With the rapid development of electronic information technology, the replacement speed of digital electronic products is getting faster and faster, and the production and sales of consumer electronic products such as flat-panel TVs (LCD and PDP), notebook computers, digital cameras, and other products have continued to grow, driving the electric capacitor industry growth.
What are electric capacitors?
Two conductors close to each other with a non-conductive insulating medium sandwiched between them form a capacitor. A capacitor stores charge when a voltage is applied between its two plates. The capacitance of a capacitor is numerically equal to the ratio of the amount of charge on one conducting plate to the voltage between the two plates.
The role of electric capacitors:
- Coupling: The capacitor used in the coupling circuit is called the coupling capacitor, which is widely used in the resistance-capacitance coupling amplifier and other capacitive coupling circuits and plays the role of blocking DC and AC.
- Filtering: The capacitor used in the filter circuit is called the filter capacitor. This capacitor circuit is used in power supply filtering and various filter circuits. The filter capacitor removes the signal in a certain frequency band from the total signal.
- Decoupling: The capacitor used in the decoupling circuit is called the decoupling capacitor, which is used in the DC voltage supply circuit of the multi-stage amplifier. The decoupling capacitor eliminates the harmful low-frequency cross-connection between each stage amplifier.
- High-frequency vibration elimination: The capacitor used in the high-frequency vibration elimination circuit is called the high-frequency vibration elimination capacitor.
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