How to convert low-voltage alternating current into direct current

Low-voltage alternating current needs to be converted into direct current, and its method is to rectify it by using the unidirectional conductive characteristics of diodes. In this way, the "peak clipping and valley filling" of alternating current can become the flat characteristic of direct current. Generally, one diode half-wave rectifier can be used in the case of low requirements, and four diode bridge full-wave rectifier can be used in the case of high requirements, and the filtering effect will be better with hundreds or thousands of microfarads of electrolytic capacitors. There is no need for a resistor here, which will only increase the internal resistance of the power supply and affect the working effect of the DC power supply.