Advantages of switching regulated power supplies:
Switching power supply circuits can be categorized into two types: series and parallel. It is directly rectified to obtain high-voltage DC, and the output voltage is adjusted by controlling the time ratio of the on-off of the switching tubes through a high-frequency oscillator.
Advantage 1: Simple summary: low power consumption, high efficiency, small and lightweight
Its biggest advantage is that the efficiency should be higher. The reason is that in the switching state, the transistor itself consumes less functionality, itself can reach 70% or 80% of the efficiency, at the same time do not need a step-down transformer, its output transformer works at high frequencies, and the volume is less than 50 Hz industrial frequency transformer. So the switching regulator circuit has the advantages of small and lightweight. It can work normally in a large voltage range.
Advantage 2: wide voltage range
The output voltage from the switching regulated power supply is regulated by the duty cycle of the excitation signal, and the change of the input signal voltage can be compensated by frequency adjustment or widening, so that in the case of large changes in the industrial frequency grid voltage, it can still ensure a stable output voltage. Comprehensively speaking, the voltage stabilization range of the switching power supply is very wide, and the voltage stabilization effect is relatively good.
Advantage 3: flexible circuit form
For example, there are self-excited and other excitation type, there are broadening and frequency regulation type, single-ended and double-ended, etc., power supply developers can play the advantages of various types of circuits, design and development to meet the different applications of switching regulated power supply.
Disadvantages of switching regulated power supply
Disadvantage 1: Switching Interference
Serious switching interference is the biggest disadvantage of switching regulated power supply. Switching regulated power supply, power adjustment switching transistor V work in the switching state, it produces AC voltage and current through other components in the circuit to produce spike interference and resonance interference, these interferences if you do not take certain measures to inhibit, eliminate and shielding, will seriously affect the normal operation of the machine.
Disadvantage 2: Complex circuit structure, high failure rate, maintenance trouble. Maintenance and high cost of construction
In this paper, we analyze the regulated power supply, which can be divided into ordinary regulated power supply and switching type regulated power supply. At the same time explains the advantages and disadvantages of switching-type regulated power supply, understanding these issues in detail in the process of designing and developing switching power supply will be of some help.
