Electronic Circuit Board Assembly

Description

The function of switching power supply is to convert a level voltage into the current or voltage required by the user through different architectures.

Switching transistors are used to switch between full open mode (saturation region) and full closed mode (cut-off region). Both modes have the characteristics of low dissipation. The switching between them will have higher dissipation, but the time is very short, so it can save energy and produce less waste heat. Switching power supply itself does not consume power.

The high conversion efficiency of switching power supply is one of its major advantages, and because the switching power supply has high working frequency, it can use small size and light weight transformer, so the switching power supply will be smaller and lighter than linear power supply.

AC to AC 

AC / DC conversion is to convert AC to DC, and its power flow direction can be bidirectional. The power flow from power supply to load is called "rectification", and the power flow from load to power supply is called "active inverter". The input of AC / DC converter is 50 / 60Hz AC, which must be rectified and filtered, so the relatively large filter capacitor is essential. At the same time, due to the safety standards (such as UL, CCEE, etc.) and the restrictions of EMC directives (such as IEC, FCC, CSA), the AC input side must be equipped with EMC filter and use the components meeting the safety standards, This limits the miniaturization of AC / DC power supply volume. In addition, due to the internal high-frequency, high-voltage and high current switch action, it is more difficult to solve the EMC problem, which also puts forward high requirements for the internal high-density installation circuit design. For the same reason, the high-voltage and high current switch increases the power consumption, It limits the process of modularization of AC / DC converter, so it is necessary to adopt the optimization design method of power supply system to make its work efficiency reach a certain degree of satisfaction.

AC / DC converter can be divided into half wave circuit and full wave circuit according to the circuit connection mode. According to the number of power supply phases, it can be divided into single phase, three-phase and multi-phase. According to the circuit work quadrant can be divided into one quadrant, two quadrants, three quadrants, four quadrants.

Why choose us?

We could provide OEM and ODM service subject to customers requirement.

We guarantee two years warranty.

We could design the open frame power supply which pass the EMC FCC test. 

Hot Tags: electronic circuit board assembly, China, suppliers, factory, customized, price, for sale, Open Frame Medical Power Supply