How to convert AC power supply into DC regulated power supply

 

 

Dc power supply consists of the following parts: The rectifier circuit is to convert power frequency alternating current into pulsating direct current. The filter circuit will filter out the AC component in the pulsating DC, reduce the AC component and increase the DC component. The regulator circuit uses negative feedback technology to further stabilize the DC voltage after rectification.

1, half wave rectifier circuit: half wave rectifier is to use the one-way conductive performance of the diode, so that the transformer output voltage Vo only reaches the load in half a cycle.

2. Full-wave rectifier circuit: a transformer with a center tap on the secondary side and two diodes constitute a full-wave rectifier circuit. The load has current flow in the positive half cycle and the negative half cycle, which improves the rectification efficiency.

3, single-phase bridge rectifier circuit: it is the most basic circuit of AC to DC. When analyzing the working principle of the rectifier circuit, it is found that the diode in the rectifier circuit has unidirectional conductivity. When the positive half cycle, diode D1, D3 conduction, the load resistance to obtain a positive half cycle sine wave. When the negative half cycle, diode D2, D4 conduction, on the load resistance to obtain a negative half cycle sine wave. By synthesizing the positive and negative half periods of the load resistance, the unidirectional pulse voltages in the same direction are obtained.