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Views: 651 Author: Jeannie Publish Time: 2025-04-02 Origin: Site
Nowadays, there are a lot of electronics. There are many electronic components that can perform certain functions, but there are certain differences between them. Today, I will introduce to you the difference between switching power supply and transformer. So what is a switching power supply, what is a transformer, what are their principles, this article introduces you to the principle and function of switching power supply, as well as the main occasions of use, and focuses on some differences between switching power supply and transformer. See the analysis below for detailed details.
To put it simply, a transformer is a circuit composed of electronic components, while a switching power supply is a multi-electronic component, which can be completed by the corresponding power conversion circuit.
Different switching power supplies can convert various forms of power into another form of electricity, such as AC and DC that can complete high/low voltage conversion, and AC which can complete high/low frequency conversion. If there is only one well-designed transformer as an electronic component, it can only complete a fixed frequency of AC current high/low voltage conversion.
The working principle of the switching power supply is to convert the alternating current into direct current, and then convert the voltage of the high-frequency transformer into alternating current at a higher frequency. The switching power supply is controlled by a circuit that switches between the high-speed channel and the two ends of the pipeline. High-frequency AC and DC power conversion transformers require a set or set of voltages. A transformer is a magnetically coupled voltage converter. In a certain field, switching power supplies are not a substitute for transformers; Their output is a pure ordinary transformer without transformers, rectifiers, filters, and regulators, and is a DC power source that converts DC voltage to DC voltage. The main differences are: the switching power supply is lightweight, the adaptation voltage range is wider, the power supply utilization efficiency is higher, and it is more environmentally friendly, but the cost is higher. At the corresponding point (sometimes not too high), the transformer can be completely replaced in most places.
The difference between a switching power supply and a transformer is that the switching power supply can accurately control the voltage at a very low or very high voltage within a certain range (for example, if the input is 110V-250, the output voltage can be stabilized at 0.5V under the positive and negative voltage requirements). The output voltage of the transformer changes with the change of the input voltage, that is, as the input voltage increases, the output voltage also increases, and as the input voltage decreases, the output voltage also decreases. Since the switching power supply converts the DC voltage into DC, the higher the frequency of the DC voltage passing through the power switch, the higher the AC current. The voltage conversion through the high-frequency transformer not only improves the work efficiency, greatly reduces the volume, but also saves copper. and iron loss. Since the power switch is controlled by the power switch tube, the switch has a short on-time and the output voltage can be maintained at a low current. The load switch maintains the output voltage. As a result, this switching power supply has a stable output voltage and can be used as an option for high-precision instruments such as light-emitting diode displays.
The above is the introduction of the difference between switching power supply and transformer summarized by Golden Eagle Coils for you. I hope I found my summary helpful.
