The alternating current input is rectified and filtered to become direct current.
2. By controlling the switch tube with a high-frequency PWM (Pulse Width Modulation) signal, the direct current is then applied to the primary winding of the switch transformer.
3. The secondary side of the switch transformer generates high-frequency voltage, which is then rectified and filtered before being supplied to the load.
4. The output is fed back to the control circuit through a specific circuit, adjusting the PWM duty cycle to achieve stable output. 36V aviation power supply, 400Hz variable frequency power supply, 115/200V power supply, 27V DC power supply, 400Hz power supply, aviation power supply
During AC input, it is generally necessary to pass through devices like cyclones to filter out interference to the power grid, as well as interference from the power source to the grid; At the same power level, the higher the switching frequency, the smaller the size of the switching transformer. However, higher requirements are placed on the switching tube; The secondary winding of the switching transformer can have multiple windings or multiple taps on a single winding to achieve the desired output; It is usually necessary to add some protective circuits, such as no-load and short-circuit protection, otherwise the DC switching power supply may be damaged.
