Advantages and disadvantages of regulated power supply and switching power supply

Regulated power supply and switching power supply are two important types of power supply in the field of power electronics. They have different working principles, advantages and disadvantages.

A. Advantages and disadvantages of regulated power supply:

Advantages of regulated power supply:

The regulated power supply mainly achieves the stability of output voltage by adjusting the voltage output of the circuit. It has the following advantages:

1. Strong stability: The output voltage of the regulated power supply is highly stable, and the output voltage can be kept constant in a wide range of voltage changes.

2. Stable output current: The regulated power supply can ensure the constant output current, even in the case of voltage fluctuations or load changes, it can also keep the output current unchanged, which is beneficial to the circuits of various electronic devices.

3. Low noise: When the output voltage and current of the regulated power supply are completely stable, there is no noise signal and it will not affect other circuits. Therefore, the regulated power supply is very suitable for applications that require high-precision power supply.

4. Strong anti-interference performance: The regulated power supply can still maintain the stability of the output voltage under the condition of electromagnetic interference and voltage fluctuations, so that the regulated power supply has strong anti-interference performance.

However, the regulated power supply also has some disadvantages.

1. Relatively low efficiency: Since the output voltage of the regulated power supply is strictly accurate, it requires a voltage regulator and other devices to achieve stability, which will lose a certain amount of voltage, power and efficiency

2. High cost: The regulated power supply needs to be specially designed and manufactured, and has high requirements on the quality and parameters of electronic components, so the price is also high.

B. Advantages and disadvantages of switching power supply:

The switching power supply is an electronic power device that uses switching devices (such as MOS, IGBT, etc.) to adjust and convert the DC power of the input power supply into the required stable or adjustable power supply.

Advantages of switching power supply:

1. High efficiency: The switching power supply adopts an efficient conversion method, so its efficiency is relatively higher than that of the regulated power supply.

2. Small size and light weight: Compared with traditional regulated power supplies, switching power supplies are small in size and light in weight, and are suitable for a wide range of electronic applications.

3. Strong adjustability: The switching power supply can adjust and change the output voltage of the power supply through adjustable components to meet different usage needs.

4. High noise: Because the switching power supply uses the switching mode, its output voltage and current are unstable, and it is easy to generate noise interference. It is not the best choice in some high-precision application fields.

5. High cost: The switching power supply requires more controllers and circuit components to achieve efficient conversion and stability, making its cost higher than that of the regulated power supply.

In short, the regulated power supply and the switching power supply have their own advantages and disadvantages. In actual applications, it is necessary to choose according to specific needs to achieve the best effect.