Q:What is the electrolytic capacitor inside?

Electrolytic Capacitor Features 1: the capacity of the unit volume is very large, tens of tons to several hundred times larger than other types of capacitors. Electrolytic capacitor features two: rated capacity can be very large, you can easily do tens of thousands of μf or even f (but not with the electric layer capacitance ratio).

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

The other is the signal filter, that is, the case of alternating current, but also in the AC electrode polarity changes in the process of continuous charge and discharge, in order to AC, if not the capacitance of the two sheds with the amount of change, no matter how the AC can not pass.

Q:What is the use of capacitors?

As a passive component of the capacitor, its role is nothing more than the following; applied to the power circuit, to achieve bypass, decoupling, filtering and energy storage role, the following classification:

Q:How to judge the capacitor is good or bad?

10pF below the fixed capacitor capacity is too small, with a multimeter to measure, only qualitative check whether there is leakage, internal short circuit or breakdown phenomenon.

Q:Use capacitance to do transformer how to calculate

Similarly, we can also 5W / 65V bulb and 1uF capacitor series connected to the 220V / 50Hz AC, the bulb will be lit, and will not be burned. Because the 5W / 65V bulb operating current is also about 70mA. Therefore, the capacitor buck is actually using capacitive current limiting. While the capacitor actually functions as a limiting current and dynamically distributes the voltage across the capacitor and the load.

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

To charge the power cord for long periods of time. The safety standard stipulates that the voltage (or ground potential) charged at both ends of the power cord plug must be less than 30% of the original rated operating voltage within two seconds when the machine power cord is in operation.

Q:Why does the circuit current gradually decrease when charging the capacitor?

For the ideal capacitor, when the capacitor is charged, as the voltage across the capacitor gradually increases, the charging current will gradually decrease until zero.

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

In the electronic technology, used to consider the wave, phase, straight, bypass, frequency, etc. Almost all of the electronic products, household appliances are the following are some of the capacitor shape.

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.

Q:Low voltage capacitor voltage 0.45 and 0.4 What is the difference between usage

0.45 capacitor used in the voltage level is high (for example, the transformer low voltage side voltage may reach 415V), with a tuned reactor (tuning reactor will increase the capacitor terminal voltage) situation; Note that the actual capacity of 0.45 capacitor nominal capacity (Actual voltage / 0.45) ^ 2 times;