Electronic circuits require DC power to provide energy when working, and batteries are generally only used in low-power portable instruments because of the high cost of use. Here we discuss how to convert AC power to DC regulated power. The general DC power supply is composed of the following parts: the rectifier circuit is to convert the power frequency alternating current into pulsating direct current. The filter circuit filters out the AC component in the pulsating DC, reduces the AC component, and increases the DC component. The voltage regulator circuit uses negative feedback technology to further stabilize the rectified DC voltage. (1) Half-wave rectification circuit: Half-wave rectification is to use the unidirectional conductivity of the diode, so that the voltage Vo from the transformer can reach the load in only half a cycle, as follows: (2) Full-wave rectification circuit: A transformer with a center tap on the secondary side and two diodes are used to form a full-wave rectification circuit as shown in the figure below. It can be seen from the figure that current flows through the load in both positive and negative half cycles, which improves the rectification efficiency . (3) The single-phase bridge rectifier circuit is the most basic circuit that converts AC to DC. When analyzing the working principle of the rectifier circuit, the diode in the rectifier circuit has unidirectional conductivity. When the positive half cycle, the diodes D1 and D3 are turned on, and the positive half cycle of the sine wave is obtained on the load resistance. When the negative half cycle, the diodes D2 and D4 are turned on, and the negative half cycle of the sine wave is obtained on the load resistance. After the positive and negative half cycles are synthesized on the load resistance, the unidirectional pulsating voltage in the same direction is obtained. Wall Ap Wireless Ap,Wall Mount Access Point,Wall Mount Wifi Access Point,Access Point Ac In-Wall Shenzhen MovingComm Technology Co., Ltd. , https://www.movingcommiot.com
