Open switching power supply off-the-shelf, free shipping, open switching power supply work process is quite easy to understand, in the linear power supply, let the power transistor work in linear mode, unlike the linear power supply, the PWM switching power supply is to let the power transistor work In the on and off states, in these two states, the voltammetric product on the volt/power device applied to the power transistor is the loss produced on the power semiconductor device.
1. Small size and light weight: Since there is no power frequency transformer, the volume and weight are only 20-30% of the linear power supply.
2. Low power consumption and high efficiency: The power transistor operates in the switching state, so the power consumption on the transistor is small, the conversion efficiency is high, generally 60 to 70%, and the linear power supply is only 30 to 40%.