The working principle of the capacitance meter, the role and working principle of the capacitor

It is the storage of electrical energy by storing a charge on the electrodes, usually with inductors.

It is used together to form an LC oscillation circuit. The working principle of the capacitor is that the charge will move under force in the electric field, and when there is a medium between the conductors, it hinders the movement of the charge and makes the charge accumulate on the conductor, resulting in the accumulation and storage of the charge.

Capacitors are one of the electronic components widely used in electronic devices, so they are widely used in DC-blocking, coupling, bypass, filtering, tuning loops, energy conversion, control circuits, etc.

ONE How it works:

A capacitor is similar to a battery in that it also has two electrodes. Inside the capacitor, the two electrodes are connected to the dielectric.

separated by two metal plates. A dielectric can be air, paper, plastic, or anything else that does not conduct electricity and prevents these two metal poles from coming into contact with each other.

The metal plate on the capacitor that is connected to the negative electrode of the battery will absorb the electrons produced by the battery. A metal plate on the capacitor that is connected to the positive terminal of the battery will release electrons to the battery. After charging is complete, the capacitor has the same voltage as the battery (if the battery voltage is volts, the capacitor voltage is also volts).

2. Main Uses:

1.Capacitors are used to store power for high-speed release. That's where the flash comes in. Large lasers also use this technique to achieve very bright instantaneous flash effects.

2.Capacitors also eliminate pulsation. If the line conducting the DC voltage contains pulsations or spikes, a high-capacitance capacitor can smooth the voltage by absorbing the peaks and filling the troughs.

3.Capacitors can block direct current. If a smaller capacitor is connected to the battery, there will no longer be current passing between the two poles of the battery after the capacitor is fully charged, which is instantaneous when the capacitor capacity is small.

However, any alternating current (AC) signal can flow through the capacitor unimpeded. The reason for this is that as the AC current fluctuates, the capacitor is constantly charging and discharging, as if the AC current is flowing.

4.Capacitors are used together with inductors to form oscillators.

How does a capacitor work? - Analysis of the working principle of capacitors.

The capacitance in the coupling circuit is called the coupling capacitor, and it is used in a large number in resistor-capacitive coupling amplifiers and other capacitive coupling circuits to block the direct flow and AC.

The capacitors in the filter circuit are called filter capacitors, which are used in power supply filtering and various filter circuits, and the filter capacitors remove the signal in a certain frequency band from the total signal.

The capacitors in the decoupling circuit are called decoupling capacitors.

This capacitive circuit is used in the DC voltage supply circuit of a multistage amplifier to eliminate harmful low-frequency cross-links between each amplifier stage.