AC-DC power module
Devices that can form a constant current in the circuit, such as dry battery, battery, DC generator, etc., are called DC power supply. The DC power supply has two positive and negative electrodes. The positive potential is high and the negative potential is low; When the two electrodes are connected with the circuit, the DC power supply can maintain a constant potential difference between the two electrodes, so as to form a constant current from positive to negative in the external circuit. In order to keep the potential difference between the two poles of the DC power supply constant, the positive charge flowing from the positive pole to the negative pole in the external circuit must return from the negative pole to the positive pole against the direction of the electric field force in the power supply. This process can not be realized by electrostatic force, but by some "non electrostatic force" opposite to the direction of electrostatic force.
Function of AC-DC power module
1、 Isolation
1. Safety isolation: strong current and weak current isolation IGBT isolation drive surge isolation protection,lightning isolation protection (such as isolation protection of medical electronic equipment in contact with human body)
2. Noise isolation: (analog circuit and digital circuit isolation, strong and weak signal isolation)
3. Ground loop elimination: remote signal transmission distributed power supply system
2、 Protect
Short circuit protection, overvoltage protection, undervoltage protection, overcurrent protection and other protection
3、 Voltage conversion
Boost conversion step-down conversion \ AC / DC conversion (AC / DC, DC / AC), polarity conversion (positive and negative polarity conversion, single power supply and positive and negative power supply conversion, single power supply and multi power supply conversion)
4、 Voltage stabilization
AC mains power supply, remote DC power supply,distributed power supply system,battery power supply
