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Picture Model No. Input voltage Output Current Description Datasheet Order
Manufacturer adjustable DC regulated power supply constant voltage constant current power supply 60v30v5a10a adjustable power supply

FBDPS-001

110/200(V) 0-10A

Manufacturer adjustable DC regulated power supply constant voltage constant current power supply 60v30v5a10a adjustable power supply

Switching aging test DC power supply various specifications NC DC voltage and current stabilizing power supply

FBDPS-002

110/220(V) 0-30A

Switching aging test DC power supply various specifications NC DC voltage and current stabilizing power supply

CE / FCC adjustable maintenance Power DC regulator qw-305ds Mini switching power supply 30v5a

FBDPS-003

110/220(V) 0-5A

CE / FCC adjustable maintenance Power DC regulator qw-305ds Mini switching power supply 30v5a

100V, 60V, 30V four digit display DC regulated power supply with 5V USB interface

FBDPS-004

110/220(V) 0-5A

100V, 60V, 30V four digit display DC regulated power supply with 5V USB interface

6kW program controlled DC regulated power supply laboratory DC power supply

FBDPS-005

220(V) 100A

6kW program controlled DC regulated power supply laboratory DC power supply

0-100V 50A high power supply 80v50v100a DC voltage regulator electrolytic plating

FBDPS-006

110/220(V) 0-60A

0-100V 50A high power supply 80v50v100a DC voltage regulator electrolytic plating

CE / FCC certified adjustable DC power supply qw-3010ds Mini switching power supply 30v10a is delivered by the manufacturer

FBDPS-007

110/220(V) 0-10A

CE / FCC certified adjustable DC power supply qw-3010ds Mini switching power supply 30v10a is delivered by the manufacturer

CE certified qw-10010d 0-100V 0-10a DC regulated power supply

FBDPS-008

110/220(V) 0-10A

CE certified qw-10010d 0-100V 0-10a DC regulated power supply


DC Power Supply

  • What is DC power supply, AC-DC Converter:


    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, a constant potential difference can be maintained 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 regulated 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.digital DC power supply.


    Technical indexes of DC power supply, DC power supplies:

    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 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. Voltage regulation rate refers to the relative change of output voltage when the relative change of input voltage is ± 10%. The voltage stabilizing coefficient and voltage regulation rate both explain the impact of input voltage change on 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 of output voltage when the output current changes from 0 to the maximum value. Both the output resistance and current regulation rate show the influence of load current change on the output voltage, so only one of them needs to be tested.


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


    Application of DC power supply

    The space industry bears a special national mission. Aerospace communication system has the characteristics of specificity and confidentiality, especially high timeliness requirements. The reliability of communication power supply is the primary consideration of aerospace communication department and an important guarantee for the safe operation of communication system. At present, the communication bureaus (stations) of the aerospace system generally use UPS system as the main power supply of IT equipment, which overcomes the system interruption caused by mains power interruption. However, the failure of UPS itself and even parallel redundant system leads to network communication accidents from time to time, which has had a great social impact and considerable economic losses.


    As a simple and reliable technology, 240V high voltage DC power supply system (HVDC) reduces power conversion links and improves power supply reliability and efficiency. The aerospace communication department should actively track the development and changes of power supply technology, pay attention to the exploration results in application practice, convert new technologies into new applications, and improve the reliability level of aerospace communication system.


    Advantages of 240V high voltage DC power supply system

    240V high voltage DC power supply system has the advantages of mature technology, high reliability, simple maintenance and operation, high conversion efficiency and simple on-line capacity expansion. The communication industry has been discussing the use of high voltage DC system to replace UPS system.

    240V HVDC power supply system has obvious technical and price advantages, and can be popularized and used on the premise of using the existing IT equipment. Therefore, it has been widely valued and supported by departments at all levels.

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