The working principle of electronic transformer

polemounted transformers is no regulated switching power supply, it is actually a kind of inverter. First, the AC rectifier into DC, and then use the electronic components to form a high-frequency oscillator to DC into high-frequency AC, through the switching kiosk transformers output voltage required for the secondary rectifier for electrical use. Switching power supply with a small size, light weight, low price, it is widely used in a variety of electrical appliances. According to the high-frequency switch drive different ways, can be divided into self-excited oscillation and he excited type.