China Leading Manufacturer of DC Power Supply

FBELE independently develops DC power supply, digital intelligent control, and integrates global high-quality components Provide customized R & D services for high-end power supply! Military quality and stable performance

  • Long service time.
  • Environmental protection and energy saving
  • Stable performance
  • Competitive price,stock ready for shipment.

What is DC Power Supply

The DC power supply has positive and negative electrodes. The potential of the positive electrode is high and the potential of the negative electrode is low. When the two electrodes are connected with the circuit, it can maintain a constant potential difference between the two ends of the circuit, so as to form a current from the positive electrode to the negative electrode in the external circuit. DC power supply is an energy conversion device, which converts other forms of energy into electric energy supply circuit to maintain the steady flow of current.

Why Purchase FBELE portable power station


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

High Quality Level

FBELE DC power supply is exquisitely made of high-quality materials, with stable performance, safety and reliability

Long Service time

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


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

Technical Parameter of DC power supply

There are two technical indexes of DC power supply: one is characteristic index, including allowable input voltage, output voltage, output current and output voltage regulation range; The other is the quality index, which is used to measure the stability of output DC voltage, including voltage stabilizing coefficient (or voltage regulation rate), output resistance (or current regulation rate), ripple voltage (surrounding and random drift).

1) Voltage stabilizing coefficient and voltage regulation rate: voltage stabilizing coefficient refers to the relative change of output voltage caused by the relative change of input voltage when the load current and ambient temperature remain unchanged. The voltage regulation rate refers to the relative change of the output voltage when the relative change of the input voltage is ± 10%. The voltage stabilizing coefficient and voltage regulation rate both explain the influence of the change of the input voltage on the output voltage, so only one of them needs to be tested.

2) Output resistance and current adjustment rate: the output resistance is the same as the output resistance of the amplifier, and its value is the absolute value of the ratio of the change of output voltage to the change of output current when the input voltage remains unchanged. Current regulation rate: the relative change value of output voltage generated when the output current changes from 0 to the maximum value. The output resistance and current regulation rate both show the influence of load current change on the output voltage, so only one of them needs to be tested.

3) Ripple voltage: the AC voltage component superimposed on the output voltage. The peak and peak values are generally in the order of millivolts by oscilloscope observation. AC millivoltmeter can also be used to measure its effective value, but there is a certain error because the ripple is not a sine wave.

Rocker Switches manufacturing equipment

Main purpose of DC power supply

  1. Electrolytic capacitors are sophisticated and tantalum capacitors are energized
  2. Routine test of resistor, motor, etc
  3. Laboratory, electronic equipment, automatic test equipment
  4. Electronic inspection equipment, production line equipment, communication equipment
  5. All other occasions where DC power supply is required

Purpose of DC system: it is widely used in hydraulic and thermal power plants, various substations and other users using DC equipment (such as power plants, substations, distribution stations, petrochemical, iron and steel, electrified railways, real estate, etc.) to provide DC power for signal equipment, protection, automatic devices, emergency lighting and opening and closing operations of circuit breakers. It is also widely used in communication departments, computer rooms, hospitals, mines and hotels, And the reliable emergency power supply of high-rise buildings, which is widely used.

China Leading DC power supply Manufacturer


FBELE- is a professional DC power supply enterprise integrating R & D, production and sales. Its main products include DC power supply, DC regulated power supply, program-controlled DC power supply, high-power DC power supply and other products! With a forward-looking understanding of power technology, to improve the production process

At the beginning of its establishment, FBELE company established the product strategy of high technology, high quality, high precision, high reliability and multi-function, and spared no expense in introducing advanced technology from abroad

FBELE company, a professional manufacturer of DC 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

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 DC power supply Manufacturer & Supplier

FBELE power supply one-stop procurement and service. We have thousands of standard power supply products. The products are widely used in industrial automation, led, electronic communication, medical treatment, etc. to meet the needs of customers with different specifications and save your development time and cost

FBELE Certification

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