Do you know the advantages and disadvantages of regulated power supply?

Stabilized Voltage Supply is an electronic device that provides stable AC power or DC power for the load. Including AC and DC regulated power supply.
Necessity of using regulated power supply:
With the rapid development of society, electricity equipment is growing day by day. However, the aging and development of power transmission and distribution facilities are lagging behind, and the end user voltage is too low due to poor design and insufficient power supply, while the end user voltage is often high. High-tech and precision equipment with strict requirements on electrical equipment, especially voltage, is like no insurance.
Unstable voltage may cause fatal damage or misoperation to the device, affecting production, resulting in delay in delivery time, unstable quality, and other losses. At the same time, the aging of the acceleration equipment, the impact of service life or even the burning of accessories, so that the owner is faced with the trouble of repair or the need to update the equipment in a short period of time, a waste of resources; serious cases or even security incidents, cause immeasurable losses. Advantages and disadvantages of regulated power supply

Advantages:
[1]. low power consumption and high efficiency. In the switching regulated power supply circuit, the transistor v works alternately in the switching state of conduction-cutoff and cutoff-conduction under the excitation signal, and the conversion speed is very fast, generally, the frequency is about 50 kHz. In some advanced countries, it can be several hundred or nearly 1000 kHz. This makes the power consumption of the switch transistor v very small, and the power supply efficiency can be greatly improved, and the efficiency can reach 80%.
[2]. small size, light weight. The principle diagram of the switching regulated power supply clearly shows that there is no heavy power frequency transformer. After the dissipation power of the adjusted tube V is greatly reduced, a large heat sink is saved. Due to these two reasons, the switching voltage regulator power supply is small in size and light in weight.
[3]. wide voltage regulator range. The output voltage of the regulated switch power supply is adjusted by the duty cycle of the excitation signal. The voltage variation of the input signal can be compensated by frequency modulation or Width Adjustment, when the power frequency grid voltage changes greatly, it can still ensure a stable output voltage. Therefore, the voltage regulation range of the switch power supply is very wide, and the voltage regulation effect is very good. In addition, there are two methods to change the duty cycle: Pulse Width Modulation and frequency modulation. In this way, the switching regulated power supply not only has the advantage of wide voltage regulation range, but also has many ways to achieve voltage regulation. Designers can according to the actual application requirements, flexible selection of various types of switching regulated power supply.
[4]. The filtering efficiency is greatly improved, greatly reducing the capacity and volume of the filtering capacitor. The current operating frequency of the switching regulated power supply is basically 50 kHz, Which is 1000 times that of the linear regulated power supply, which makes the filtering efficiency after rectification almost increased by 1000 times. That is, capacitor filtering is added after half-wave rectification, and the efficiency is also improved by times. When switching a regulated power supply with the same Ripple Output voltage, the capacity of the filtered capacitor is only 1/500-1/1000 of the filtered capacitor in the linear regulated power supply.
[5]. flexible and diverse circuit formats. For example, there are self-activation and exclusive types, adjustable width and frequency modulation types, single-end and double-end types, and so on. Designers can take advantage of the expertise of various types of circuits, design a switching and regulated power supply that can meet the needs of different applications.

Disadvantages:
The disadvantage of switching regulated power supply is that it has serious switch interference. In a regulated switch power supply, the power adjustment switch transistor v operates in the switching state, and the AC voltage and current generated by it are through other components in the circuit to generate peak interference and harmonious vibration interference, if some measures are not taken to suppress, eliminate, and shield the interference, the normal operation of the whole machine will be seriously affected. In addition, due to the absence of power frequency transformer isolation, these interference will be stringed into the power frequency grid, so that other nearby electronic instruments, equipment and household appliances are seriously affected. At present, due to the gap between domestic microelectronics technology, resistance-tolerant device production technology and magnetic material technology and some advanced technology countries, the cost cannot be further reduced, which also affects the further improvement of reliability. Therefore, in China's electronic and mechanical and electrical integrated instruments, switching voltage regulator power supply is not widely used and widely used.
Especially for High Voltage electrolytic capacitors, high back pressure high-power switches, core materials of switching transformer and other devices without Power Frequency Transformer Voltage Regulator power supply, it is still in the research and development stage in China. In some advanced countries, although the switch voltage regulator power supply has developed, there are still some problems in practical application, which are not very satisfactory. This exposes another disadvantage of the switch regulated power supply, that is, the circuit structure is complex, the failure rate is high, and the maintenance is troublesome. In this regard, if the designers and manufacturers do not fully pay attention to it, it will directly affect the promotion and application of the switch regulated power supply. Today, the main reason for the difficulty in the promotion and application of switching voltage regulator power supply is the difficulty of its production technology, the trouble of maintenance and the high cost.

Do you know the advantages and disadvantages of regulated power supply?