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