We are a Power Cord Manufacturers.Let's take a look at what the power board does and how it works!

　　As the name suggests, the power board is a main board for power processing. The power processing methods are diversified according to the subsequent circuit requirements, such as:

　　Input and output types: alternating current (AC), direct current (DC), pulse, high voltage, low voltage, high frequency, low frequency, single channel, multichannel;

　　Transformation type: step-up, step-down, constant voltage, constant current, linear, nonlinear controllable;

　　Circuit mode: coil coupling type transformer, electronic device type switching power supply.

　　2. The working principle of the power board

　　1. After the power is turned on, the auxiliary power supply starts to work first, and provides a working voltage of positive 5 volts for the microprocessor control system of the main circuit board.

　　2. After starting up, the auxiliary power supply provides a VCC-ON power supply for the PFC power factor correction circuit drive control circuit UCC28051 and the main switching power supply drive giant circuit DLA001, and the main switching power supply starts to work, providing positive 24 volts and positive 12 volts to the load circuit of the main circuit board. two voltages.

　　3. When the TV is on standby, the VCC-ON power supply of the PFC power factor correction circuit drive control circuit UCC28051 and the main switching power supply drive control circuit DLA00l is cut off, and the main power supply stops working.

　　3. The role of the power board

　　The power supply board is a functional circuit used in electronic equipment to convert the input power supply voltage (such as power frequency 220V~) into various levels of working voltage (such as 12V-, 15V-) required by the electronic circuit, and make it on a circuit board. It is called the power board.

　　A switching power supply is a kind of power conversion circuit. Different from the linear power supply, the switching power supply has high efficiency, small size, and lightweight. The average output voltage is adjusted by the on-off time of the switching tube. This power board is called a switching power board.

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