1. The AC input power is rectified and filtered to produce direct current; 2. It is then applied to the primary of a switch-mode transformer through a high-frequency PWM (Pulse Width Modulation) signal controlling the switching tube; 3. The secondary of the switch-mode transformer induces a high-frequency voltage, which is rectified and filtered to supply the load; 4. The output section is fed back to the control circuit through a certain circuit, adjusting the PWM duty cycle to stabilize the output. Generally, an inductor or similar component is used during AC input to filter out interference from the power grid, as well as interference from the power supply to the grid; At the same power level, the higher the switching frequency, the smaller the switch-mode transformer, but the stricter the requirements for the switching tube; The secondary of the switch-mode transformer can have multiple windings or multiple taps on a single winding to achieve the desired output; Additional protective circuits, such as overload and short-circuit protection, should typically be added to prevent damage to the AC constant current source; The secondary of the switch-mode transformer can have multiple windings or multiple taps on a single winding for the required output; protective circuits should also generally be added. Aviation ground power 2, 36V aviation power 1, 400HZ frequency conversion power 7, 115/200V power 2, 27V DC power 5, 400HZ power 12, aviation power
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