Q:How does the capacitor work? What does it do?

Straight to pass on the circuit need to pass the AC signal, power supply filter, cut off DC and other places to use. Capacitor charge and discharge is the basis of other properties. There are two kinds of filtering, one is the power filter, which is more obvious charge and discharge, can be seen as a container.

Q:What is the difference between polyester film capacitors and ceramic capacitors?

Polyester capacitor medium for the polyester film, its capacity and pressure range, small size, large capacity, high temperature, low cost. But tgδ with the frequency changes, it is used for tgδ, stability and loss requirements are not high occasions, such as DC and pulsating circuit.

Q:Is the capacitor attached to the carbon foil positive?

In order to facilitate the manufacture of capacitors, usually the electrolyte solution is immersed in special paper, and then with a place of aluminum and immersion in electrolyte solution with the paper together, so you can more easily in the original aluminum foil to lead the negative.

Q:How to use the capacitor

Circuites that are forbidden use: Even if the customer installs a solid-state aluminum capacitor in strict accordance with the welding conditions we have given, the leakage current of the solid-state aluminum capacitor may also increase or even increase significantly.

Q:On the ground resistance, what role the capacitor

Filter: The capacitor used in the filter circuit is called the filter capacitor, in the power supply filter and a variety of filter circuit using this capacitor circuit, filter capacitor will be a certain band of the signal from the total signal removed.

Q:Use capacitance to do transformer how to calculate

According to this feature, if we connect a resistive element in series with a 1uF capacitor, the voltage obtained at both ends of the resistive element and the power dissipation it generates depends entirely on the characteristics of the resistive element.

Q:Why some Y capacitor is very small, and some Y capacitor is very large?

They all belong to the safety capacitor, which requires the capacitance value can not be too large, and the pressure must be higher. Under normal circumstances, work in the subtropical machine, the required leakage current can not exceed 0.7mA; work in the temperate machine, the required leakage current can not exceed 0.35mA. Therefore, the total capacity of the Y capacitor is generally not more than 4700PF (472).

Q:How to identify high voltage capacitors is good or bad

You have no voltage regulator, if there is, with a voltage regulator, an ammeter a voltmeter (available multimeter instead) to the capacitor plus an integer current (controlled by a voltage regulator), and then calculate the capacitance based on the voltage reading and current reading Impedance, and then divided by 3184 calculated by the tolerance value, the results and the capacitor nameplate on the standard almost no capacitance, and the other side of the capacitor is broken

Q:What is the capacitor, what is the use, where is there?

Capacitor is the storage of the charge of the container, usually by two pieces of metal foil (or metal film) in the interval between the air, paper, mica, plastic film and other insulating materials. Commonly used to improve the power factor, start single-phase asynchronous motor,

Q:Capacitance can pass high frequency resistance low frequency principle

In a cycle of alternating current, due to the positive and negative charge of the capacitor, the direction of the current flowing through the circuit is changed, but because of the repeated charge and discharge of the capacitor, the circuit will always have a current through, Can make the AC through, which is the capacitance of the communication characteristics.