According to the principle of circuit functional unit layout of the umbrella components of the circuit:(1) Each functional circuit should determine the corresponding position according to the flow direction of the signals between them, so as to make the wiring convenient;(2) Each functional circuit

Principles for determining the location of special components:.(1) The heating element should be placed in a position conducive to heat dissipation, such as the edge of the PCB, and away from the microprocessor chip;(2) Special high-frequency elements should be placed next to each other so as to sho

In the operation of capacitors, if there is an occasional "crackling" discharge sound inside the capacitor, this is due to the sound produced when the dielectric breaks down and self-heals after the capacitor is impacted by the power grid. This situation will not affect the normal use of the cap

Capacitor housing is sealed. Generally internal media is not leakage. However, it is sometimes found that after the capacitor has been running for a period of time, a small amount of oil stains appear around the outlet terminal on the cover of the capacitor, which is due to the fact that the rem

With the increase of operation time, the capacitance of low-voltage capacitor will decrease, and the average attenuation rate of capacitance in five years is less than 1 %/ year. Since the capacitance is directly proportional to the working current of the capacitor, during daily inspection, attentio

When the fast fuse core of the capacitor is fused, the core shall not be replaced until the cause is determined and the capacitor shall be forced to be put again. The power supply should be cut off and discharged first, and then external checks should be carried out: whether there are flashover mark

There are anti-riot isolating devices inside the capacitors. When the shell expands sharply due to the fault of the capacitor, the isolating device acts, thus cutting off the external power supply of the capacitor to avoid explosion. In extreme bad conditions, if the riot isolation device does not a

Capacitor explosionCauses of capacitor explosion:(1) Positive and negative electrode coupling; (2) The quality of capacitance is not up to standard; (3) Poor sealing and oil leakage; (4) Internal dissociation and bloating; (5) Damage of shell insulation; (6) The charge closing causes the capacitor t

Failure safety. Failure may lead to a short circuit when the capacitor is damaged. In order to avoid causing electrical shock, smoke, fire and other dangerous conditions during short circuit, use fuse and other components in the circuit to set up automatic fault prevention function. If the above war

Test conditions for voltage resistance. (1) Test equipment. The AC voltage-resistant test equipment should have the capability to produce a sinusoidal wave similar to 50 / 60 Hz. If a deformed sine wave is applied or an overload voltage exceeds a specified voltage value, failure may occur. (2)Voltag