Dc regulated power supply refers to a DC regulated power supply used in electronic equipment. Voltage regulation can be summarized into three categories: linear power supply, ferroresonance power supply, switching power supply. Today Xiaobian mainly analyzes the type of linear DC regulated power supply.

1, transistor series DC regulated power supply: : transistor series DC regulated power supply works in linear amplification state, so it has the characteristics of fast response, high voltage stability and load stability, small output ripple voltage, small noise and so on. In circuit technology, fewer components are used to control the circuit. There is no special requirement for the switching characteristics of the adjusting tube and the high-frequency performance of the filter, and the reliability is high.

2, the development of integrated linear regulator: early market integrated regulator manufacturers, large output, widely used. There are two main types of semiconductor monolithic integrated voltage regulator and hybrid integrated voltage regulator. They vary in circuit form, package, voltage and current specifications. Integrated voltage regulator can be divided into constant voltage, adjustable, tracking and floating. But in either form, they usually include a reference voltage source, comparison amplifiers, adjusting elements for power crystal triodes, and some form of current-limiting circuit. Some integrated voltage regulators also have internal logic shutdown circuit and hot-cut circuit. Compared with the regulator composed of discrete components, the advantages of integrated regulator are very obvious, such as low cost, small size, easy to use, good performance and high reliability.

3, constant current source network voltage regulation power supply technology: the use of constant current source network voltage regulation is a feature of current series voltage regulation power supply. Constant current network can effectively improve the stability of power supply. Constant current networks are widely used in integrated voltage regulators. Constant current technology is increasingly used in series regulators composed of discrete components. Constant current can be achieved by using transistor field effect transistors and constant current diodes. Constant current diodes are more convenient for series regulators with discrete components.