Introduction to the design of linear regulated power supply

System design ideas:

The main structure of the linear regulated power supply is shown in the figure below:

Figure 1 Main structure of linear regulated power supply

The DC voltage stabilizer is generally composed of a power transformer, a rectifier circuit, a filter circuit and a voltage stabilizer circuit. The transformer converts the AC voltage of the mains into the required low-voltage AC power, the rectifier converts the AC power into DC power, and after filtering, the voltage stabilizer converts the unstable DC voltage into a stable DC voltage output. This design mainly uses DC voltage stabilization to form an integrated voltage stabilization circuit, which converts 220V AC power into stable DC power through the process of voltage transformation, rectification, filtering and voltage stabilization, and outputs a stable DC voltage.

2. System functions and instructions for use:

1. Transformer

The transformer circuit is relatively simple, with only a single-phase transformer. The transformer converts the mains electricity into a voltage that the circuit can bear. The transformer is a device that converts AC voltage, current and impedance. When AC current flows through the primary coil, AC magnetic flux is generated in the iron core (or magnetic core), inducing voltage (or current) in the secondary coil. The transformer consists of an iron core (or magnetic core) and a coil. The coil has two or more windings, of which the winding connected to the power supply is called the primary coil, and the remaining windings are called secondary coils. The basic principle of the transformer is the principle of electromagnetic induction.