1. Capacitance

Capacitor is a very common kind of domestic components. It is a component composed of two metal films close together and separated by insulating materials. According to domestic component manufacturers, the characteristics of capacitors are mainly DC blocking and AC. The size of the capacitor capacity is the size that can store electrical energy. The obstructive effect of the capacitor on the AC signal is called capacitive reactance, which is related to the frequency and capacitance of the AC signal.

2. inductance

Inductance is also a kind of domestically-made components commonly used in circuits. The characteristic of inductance is DC resistance to AC. The higher the frequency, the greater the impedance of the inductor coil. Suitable for use, the inductor can form an oscillator circuit with the capacitor in the circuit. Normally, there are direct calibration and color calibration methods for inductance, and the color calibration method is similar to resistance.

3. crystal diode

There is also a very common type of domestic components that are crystal diodes. Crystal diodes are often represented by "D" plus a number in the circuit. Under the action of forward voltage, the on-resistance of the diode will be very small, but under the action of reverse voltage, the on-resistance will become extremely large or infinite . Because the diode has this characteristic, it is often used in circuits such as rectification, isolation, voltage stabilization, polarity protection, code control, frequency modulation, and noise suppression.

In addition to capacitors, inductors, crystal diodes and other types of domestic components, there are also many different types of electrical capacitors, resistors, inductors and transformers. These types of components can play an important role in electronic equipment. However, the quality of components will affect the use of equipment, so we must purchase from domestic component manufacturers with excellent quality and good service.