China Leading Manufacturer of Switching Power Supply

FBELE switching power supply has a wide input voltage range of 85-305v and power of 15-1000w. It is fast delivery, safe supply, complete certification and one-to-one technical support. Welcome to consult!

  • Full range of size
  • Best Quality, 75 national product safety certification
  • FBELE famous brand,25years manufacturing experience
  • Competitive price,stock ready for shipment.

What is Switching Power Supply

Switching mode power supply (SMPS), also known as switching power supply and switching converter, is a high-frequency electric energy conversion device and a kind of power supply. Its function is to convert a standard voltage into the voltage or current required by the user through different forms of architecture. The input of switching power supply is mostly AC power supply (such as mains power) or DC power supply, while the output is mostly equipment requiring DC power supply, such as personal computer, and switching power supply converts the voltage and current between them.

Why Purchase FBELE Switching Power Supply


75 national product safety certification,for example UL TUV CUL VDE CE CCC certification

Free Samples

FBELE can provide free samples if the sample quantity below 2pcs is acceptable

Long Service time

FBELE uses high-quality materials to make Switching mode power supply, so it has a long service life


FBELE provides mold opening and customizes products according to customer drawings and samples for Switching power supply

Main purpose and classification of switching power supply

Switching power supply products are widely used in industrial automation control, military equipment, scientific research equipment, LED lighting, industrial control equipment, communication equipment, power equipment, instruments and meters, medical equipment, semiconductor refrigeration and heating, air purifier, electronic refrigerator, liquid crystal display, LED lamps, communication equipment, audio-visual products, security monitoring, LED lamp belt, computer chassis, digital products and instruments. There are two kinds of modern switching power supply: one is DC switching power supply; The other is AC switching power supply. The DC switching power supply is mainly introduced here. Its function is to convert the original ecological power supply (crude power) with poor power quality, such as municipal power supply or battery power supply, into high-quality DC voltage (refined power) that meets the requirements of the equipment. The core of DC switching power supply is DC / DC converter. Therefore, the classification of DC switching power supply depends on the classification of DC / DC converter. In other words, the classification of DC switching power supply is basically the same as that of DC / DC converter. The classification of DC / DC converter is basically the classification of DC switching power supply.

Rocker Switches manufacturing equipment

Working mode of Switching power supply

As the name suggests, switching power supply is to use electronic switching devices (such as transistors, field effect tubes, thyristors, etc.) to make the electronic switching devices constantly “on” and “off” through the control circuit, so that the electronic switching devices pulse modulate the input voltage, so as to realize DC / AC, DC / DC voltage conversion, and adjustable and automatic voltage stabilization of the output voltage.

Switching power supply generally has three working modes: fixed frequency and pulse width mode, fixed frequency and pulse width variable mode, and variable frequency and pulse width mode. The former working mode is mostly used for DC / AC inverter power supply or DC / DC voltage conversion; The latter two working modes are mostly used for switching regulated power supply. In addition, the output voltage of switching power supply also has three working modes: direct output voltage mode, average output voltage mode and amplitude output voltage mode. Similarly, the former working mode is mostly used for DC / AC inverter power supply or DC / DC voltage conversion; The latter two working modes are mostly used for switching regulated power supply.

According to the connection mode of switching devices in the circuit, switching power supply can be generally divided into three categories: series switching power supply, parallel switching power supply and transformer switching power supply. Among them, transformer switching power supply (hereinafter referred to as transformer switching power supply) can be further divided into: push-pull, half bridge, full bridge and so on; According to the excitation of the transformer and the phase of the output voltage, it can be divided into forward type, flyback type, single excitation type and double excitation type; If it is divided in terms of purpose, it can be divided into more categories

China Leading Switching mode power supply Manufacturer


To buy high-quality switching power supply, please choose fbele to supply high-quality switching power supply, specializing in the production of switching power supply, LED power supply, LED driving power supply, dimming power supply, etc Welcome to  inquire

FBELE company, a professional manufacturer of switching power supply, has high reliability and stability, high efficiency, environmental protection and energy saving. It provides sample test service and technical consultation free of charge. Welcome to telephone consultation,0086-18868647636

FBELE electronics has been focusing on the customized production of Switching mode power supply for 25 years, and provides professional customized solutions. Welcome to inquire!

What does customer say about FBELE Company


Our company has just started to import Chinese products from this year and is not very familiar with customs declaration and transportation. FBELE has taken the trouble to help us handle the import, which has solved our worries at home. Very very very good service.


We choose FBELE as our partner because FBELE has its own plastic mold factory, which can help us customize products and provide prototypes, which provides a strong guarantee for us to design new products.

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China Best Switching mode power supply Manufacturer & Supplier

FBELE’s LED power supply, procurement power supply, complete specifications, second delivery from stock, rapid procurement response, genuine product guarantee, rapid inquiry, factory goods direct delivery, complete models, short delivery time, special price activities and guaranteed quality!

FBELE Certification

Genaral Questions About Switching Power Supply

How to select the appropriate power when selecting the Switching Power Supply?

Choose the right power. In order to increase the service life of the power supply, it is recommended to choose a machine with more than 30% rated output power Species. For example, if the system needs a 100W power supply, it is recommended to select a model with an output power rating greater than 130W, and so on, which can effectively improve the service life of the power supply.

How to consider the working temperature of the Switching Power Supply?

When using, it is necessary to consider the working environment temperature of the power supply and whether there is additional auxiliary heat dissipation equipment. When the ambient temperature is too high, the power supply needs to be derated for output. Derating curve of ring temperature to output power

How to select various functions of the Switching Power Supply?

Select various functions according to the application needs: protection functions: over voltage protection (OVP), over temperature protection (OTP), over load protection (OLP), etc. Application functions: signal function (normal power supply, power failure), remote control function, telemetry function, parallel function, etc. Special functions: PFC, UPS

How to consider the primary and secondary output?

The multi output power supply is generally divided into main output and auxiliary output. The main output characteristics are better than the auxiliary output. Generally, the main output with large output current. In order to ensure the output load adjustment rate, output dynamics and other indicators, it is generally required that each circuit carry at least 10% load. If the auxiliary circuit is used instead of the main circuit, the main circuit must be added with appropriate false load. See the specifications of corresponding models for details.

Which brand of Switching Power Supply is Best?

FBELE has 25 years of production history. With good quality and low price, it is your preferred supplier

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