The lead structure electrolytic capacitance also adopts the "negative pole mark", that is, the casing "-" mark the lead corresponding to the negative electrode. There is also by the length of the lead in identifying, the long lead for the positive pole, the short lead for the negative pole.

Solder aluminum electrolytic capacitance is also called "horn capacitance". At present, all manufacturers choose "negative electrode mark", that is, "bushing"-"the corresponding pin is the negative electrode." The positive and negative electrodes of electrolytic capacitors are also distinguished on

The bolted aluminum electrolytic capacitor has a clear positive and negative grade mark on the casing. The positive pole is represented by "+" and the negative electrode "-". Most bolted capacitors are engraved with "+" and "-" signs next to the terminals on the cover plate.

Input and output transformer：The main functions of the input and output transformer are to realize impedance matching, to transmit signal voltage and power without distortion, and to isolate DC.

Switching power transformer is an important device in color TV switching power supply. It is a kind of pulse transformer. Its function is to carry on the power transmission, to provide the needed power supply voltage for the whole color TV set and to realize the reliable electrical isolation between

Power transformerIn daily life, all kinds of household appliances use different voltages. It is necessary to use low-voltage DC power supply to work in household electrical appliances. The 220V AC power is converted to low-voltage AC power by power transformer, and then rectified by diode and filter

Intermediate frequency transformerIf the transformer is mainly used in radio frequency selection and interstage coupling. Frequency selection refers to the selection of useful signal frequencies among many signals and the transmission of functional signals. In AM radios, 465kHz useful signals are se

1. Replace new components. 2. The external connection of the capacitor is short-circuitd, check the short-circuit point and disconnect.

1. Unelectrified, breakdown, short circuit inside capacitor. 2. Normal power supply, breakdown after electrification, short circuit of the external connection of the capacitor.

1. The internal circuit of the capacitor is open, the components are changed; the external connection of the capacitor is open, and the welding is done again. 2.Capacitor breakdown, new. 3.Capacitor leakage and replacement. 4.Breakdown after electrification and replace it.