High-power programmable DC power supplies are suitable for large power plants, hydropower plants, ultra-high voltage substation, and unmanned substations for control, signaling, protection, automatic reclosing operations, emergency lighting, DC oil pumps, and various DC switching mechanisms. They also provide DC power for instruments in secondary circuits, control of AC uninterruptible power supplies for automation devices, and other electrical equipment requiring DC power. The positive terminal of a high-power DC power supply has a higher potential, while the negative terminal has a lower potential. When both electrodes are connected to the circuit, they maintain a constant potential difference between the ends of the circuit, thereby forming a current from the positive to the negative terminal in the external circuit. Relying solely on the difference in water levels cannot maintain a steady flow of water; however, by continuously pumping water from a lower to a higher level using a pump, a certain water level difference can be maintained to create a steady flow. 400HZ power supply
Power Transformer: Converts alternating current (AC) grid voltage u1 into an appropriate AC voltage u2.
Rectifier Circuit: Converts alternating voltage u2 into pulsating direct voltage u3.
Filtering Circuit: Converts pulsating DC voltage u3 into a smooth DC voltage u4.
Regulated Power Supply Circuit: Maintains the stability of output voltage uo against fluctuations in the power grid and changes in load.
