1. The 220V AC power enters the EMI (transient filter circuit) first, passing through the primary EMI (comprised of capacitors and ferrite inductors), followed by the secondary EMI (consisting of MOV resistors, ferrite coils, and fuse tubes). High-frequency and pulse disturbances in the current are filtered out by the "x" capacitor (metalized polyester capacitor), resulting in an AC current with no peak values and low voltage.
2. Low-voltage AC current enters the rectifying circuit, flows through a rectifier bridge (comprised of four diodes or a single component), and undergoes rectification, producing a unidirectional pulsating DC voltage, known as pulsating voltage.
Pulse voltage flows into the main capacitor, passing through polyester capacitors and ceramic capacitors to filter out high-frequency and pulse interference. It then flows through the main capacitor to prevent interference, resulting in ripple-free DC voltage, which is a DC voltage with fluctuating voltage levels; aviation ground power supply 2, 36V aviation power supply 1, 400HZ variable frequency power supply 7, 115/200V power supply 2, 27V DC power supply.
4. Wave-patterned DC input to the transformer and secondary side is first stabilized within the transformer, then proceeds to the secondary side. It is then stabilized and rectified through a secondary side voltage stabilization IC chip, a voltage stabilizing diode, and a high-power Schottky rectifier bridge. After passing through polyester capacitor filtering, a pure low-voltage DC power supply is obtained.
