Schematic diagram of boost chopper switching regulated power supply

The picture shows the schematic diagram of a boost chopper switching regulated power supply. When the switching adjustment element is controlled to be saturated and turned on, current passes through the inductor, causing it to store energy. When the switching element VT is controlled to be turned off, the energy stored in the inductor is supplied to the load through the diode VD, and the capacitor C is charged at the same time. When the load voltage is about to drop, the capacitor discharges again. At this time, a stable voltage higher than the input can be obtained. Because the switching element VT and the load RL are connected in parallel, it is also called a parallel switching power supply.