The most basic function of capacitor in chip capacitor manufacturer

Each electronic component has its role, just the role size problem. When we are using the chip capacitor, we need to know what the chip capacitor's function is, so that we can know how to design the circuit board, so that each electronic component can play their maximum role. Now what is the basic function of a chip capacitor

In general electronic circuit, chip capacitor is often used to realize bypass, filter, coupling, oscillation, phase shift and waveform transformation. These functions are the evolution of its charging and discharging functions. Charging the process by which the chip capacitor is charged (to store charge and electrical energy) is called I charging. In this case, the two plates of the chip capacitor are always one plate with positive charge and the other plate with the same amount of negative charge. Connect one electrode of a chip capacitor to the positive electrode of a power source (such as a battery pack) and the other to the negative electrode of a power source. After charging, there is an electric field between the two electrodes of the chip capacitor. During charging, the electric energy obtained from the power source is stored in the chip capacitor.

As for the detection method of chip capacitor, A detects the small capacitor below 10pf. Because the chip capacitor below 10pf is too small, the multimeter is used for measurement, and it can only qualitatively check whether there is electricity leakage, internal short circuit or breakdown. When measuring, you can choose the multimeter R*10K, with two dials are arbitrarily connected to the capacitance of the two oh, the resistance value should be infinite. If the resistance is measured (the pointer swings to the right), it is zero. Indicates capacitor leakage damage or internal breakdown. B detect whether there is charging phenomenon of 10pf-0.01uf SMT capacitor and judge whether it is good or bad.

Discharge the process by which the charged chip capacitor loses charge (releasing charge and electrical energy) is called discharge. For example, by connecting the two poles of a chip capacitor with a wire, the charges at the poles neutralize each other, and the chip capacitor releases both charge and electricity. The electric field between the two plates of the chip capacitor disappears and the electric energy is converted into energy in its form.

The chip capacitor multimeter adopts R*1. The output value of the two transistors is above 100 and the penetrating current is smaller. It can choose 3DG6 type silicon transistor composite tube. The red and black pens of the multimeter are connected with emitter e and collector c of the composite tube, respectively. Due to the amplifying effect of the composite triode, the charging and discharging process of the measured capacitor is amplified, so that the range of pointer pendulum of the multimeter is increased, so that it is easy to observe. It should be noted that: in the test operation, especially in the measurement of a small capacity of the capacitor, to repeatedly replace the measured chip capacitor pin contact AB two points, can clearly see the multimeter pointer swing. C for fixed capacitors above 0.01uf, the R*10K of the multimeter can be used to directly test whether the chip capacitor has charging process and whether there is an internal short circuit or electricity leakage, and the capacity of the chip capacitor can be estimated according to the amplitude of the pointer swinging to the right.