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What is the switching power supply 24V product for
What is the switching power supply 24V product for? Switching power supply 24V is a type of high frequency inverter switching power supply.
What is the switching power supply 24V product for? Switching power supply 24V is a type of high frequency inverter switching power supply. Switching power supply 24V, Switching power supply 24V is to use the circuit to control the switching tube to conduct high-speed turn-on and cut-off, and provide AC power to the transformer for transformation into high-frequency AC power, thereby generating the required one or more sets of voltages . The reason for the conversion to high-frequency alternating current is that the efficiency of high-frequency alternating current in the transformer transformer circuit is much higher than 50HZ, so the switching transformer can be made very small, and it is not very hot during operation. The cost is very low. If you don't change 50HZ to high frequency, the switching power supply is meaningless. Switching power supply 24V can be roughly divided into two types: isolated and non-isolated. The isolated type must have a switching transformer, while the non-isolated type may not necessarily have.
Switching power supply 24V product principle:
1. The AC power input is rectified and filtered into DC;
2. The switch is controlled by a high-frequency PWM (pulse width modulation) signal, and the DC is added to the primary of the switching transformer;
3. High-frequency voltage is induced in the secondary of the switching transformer and supplied to the load through rectification and filtering;
4. The output part is fed back to the control circuit through a certain circuit to control the PWM duty cycle to achieve the purpose of stable output. When the AC power is input, it generally needs to pass through something like a current loop to filter out the interference on the grid, and at the same time filter the interference of the power supply to the grid; when the power is the same, the higher the switching frequency, the smaller the volume of the switching transformer. But the higher the requirements for the switching tube; the secondary of the switching transformer can have multiple windings or one winding with multiple taps to obtain the required output; generally, some protection circuits should be added, such as no-load, short-circuit protection, etc. Otherwise, the Switching power supply 24V may be burned.