CN105183065A

CN105183065A - Portable 28V DC (Direct Current) voltage-stabilized power supply

Info

Publication number: CN105183065A
Application number: CN201510669990.2A
Authority: CN
Inventors: 蔡玉亭; 陈建军; 郭鸿柱; 张秀静
Original assignee: Tianjin 764 Communication and Navigation Technology Corp
Current assignee: Tianjin 764 Communication and Navigation Technology Corp
Priority date: 2015-10-16
Filing date: 2015-10-16
Publication date: 2015-12-23

Abstract

The invention relates to a voltage-stabilized power supply, in particular to a portable 28V DC (Direct Current) voltage-stabilized power supply which adopts the scheme that a single-phase three-needle standard power cord is connected with an external shell-mounted fuse holder; the external shell-mounted fuse holder is connected with an AC (Alternate Current) filter; the AC filter is connected with an AC/DC power supply conversion module; the AC/DC power supply conversion module is connected with a wiring terminal through a digital volt-ammeter; the wiring terminal is connected with a power cord of a 28V DC power supply product; the digital volt-ammeter and the wiring terminal are placed at the front end of a metal casing; the single-phase three-needle standard power cord and the external shell-mounted fuse holder are placed at the rear end of the metal casing; a handle is placed at the top end of the metal casing. The portable 28V DC voltage-stabilized power supply has the benefits as follows: the relatively low cost and relatively small test space are required only to convert commercial power 220V AC to 28V DC, so that the power supply requirement of 28V DC power supply products is met; besides, the mounting is simple and easy, the transportation and carrying are convenient, and the cost is low.

Description

A kind of portable 28V D.C. regulated power supply

Technical field

The present invention relates to a kind of stabilized voltage supply, particularly the portable 28V D.C. regulated power supply of one.

Background technology

In recent years, day by day perfect along with China's Beidou satellite system, navigation product market for big-dipper satellite is growing, company is also more and more higher for the output of the small navigational anti-interference antenna that Beidou satellite system manufactures and designs, product type also gets more and more, compared with large product in the past, due to the significantly increase of output, the workload of every test of product is increased greatly, the demand of testing apparatus is also increased gradually.For the product design mode of small-sized anti-interference antenna, direct current 28V power supply is all needed to power to it, the power supply that current company adopts mostly is the adjustable linear stabilized power supply of 0 ~ 36V or digital stable power, the desk-top power supply price of these types is greatly about 2,000 yuan to 5,000 yuans, although multiple functional, but volume is larger, weight is larger, carry and go out to carry inconvenience, and most of output port only has two-way, the needs that typical products in mass production is produced and tested cannot be met, each road voltage all needs to carry out manual adjustments, complicated operation, easily break down in operating process thus adverse influence is produced to product.

Summary of the invention

In view of the situation that prior art exists, the invention provides a kind of portable 28V D.C. regulated power supply, can civil power 220V alternating voltage be converted to 28V DC voltage, directly be powered the product that voltage is 28V to be used, judge whether stabilized voltage supply and product normally work by the reading of observation digital voltage reometer, inspection is directly perceived, and small volume, good heat dissipation effect, with low cost, carrying and easy to carry, test needs to Related product when can meet production in enormous quantities, and extendability is relatively good, the power requirement of other products is met by the output voltage of AC/DC power transfer module or power.

The present invention for achieving the above object, the technical scheme taked is: a kind of portable 28V D.C. regulated power supply, is characterized in that: comprise the accurate power lead of single-phase three pin mark, metal shell, external shell dress fuse holder, alternating current filter N1, AC/DC power transfer module N2, digital voltage reometer, connection terminal, handle; The described accurate power lead of single-phase three pin mark fills fuse holder with external shell and is connected, external shell dress fuse holder is connected with alternating current filter, alternating current filter is connected with AC/DC power transfer module, AC/DC power transfer module is connected with connection terminal by digital voltage reometer, and connection terminal is connected with the power lead of 28V direct current supply product again; Digital voltage reometer and connection terminal are placed in metal shell front end, and the accurate power lead of single-phase three pin mark and external shell dress fuse holder are placed in metal shell rear end, and handle is placed in metal shell top.

Beneficial effect of the present invention is: only need lower cost and the less test space, can civil power 220V alternating voltage be converted to 28V DC voltage, meet the power demands of 28V direct current supply product, install simple and easy, carrying and easy to carry, can judge that whether the output voltage of power supply is normal and whether test products working current size is normal by the reading of observation digital voltage reometer, thus tentatively judge that whether the duty of product is normal, and carry heat abstractor, good heat dissipation effect, without the need to external refrigeration, with low cost, price is approximately 30,000 yuan, power demands to Related product when can meet production in enormous quantities, and extendability is relatively good, output voltage values or power by changing AC/DC power transfer module meet the power requirement of other products, this output voltage stabilization is at direct current 28V, without the need to carrying out manual adjustments, can prevent from regulating error to cause adverse effect to product.

Accompanying drawing explanation

Fig. 1 is circuit theory diagrams of the present invention.

Embodiment

As shown in Figure 1, a kind of portable 28V D.C. regulated power supply, comprises the accurate power lead of single-phase three pin mark, metal shell, external shell dress fuse holder, alternating current filter, AC/DC power transfer module, digital voltage reometer, connection terminal, handle; The described accurate power lead of single-phase three pin mark fills fuse holder with external shell and is connected, external shell dress fuse holder is connected with alternating current filter, alternating current filter is connected with AC/DC power transfer module, AC/DC power transfer module is connected with connection terminal by digital voltage reometer, and connection terminal is connected with the power lead of 28V direct current supply product again; Digital voltage reometer and connection terminal are placed in metal shell front end, the accurate power lead of single-phase three pin mark and external shell dress fuse holder are placed in metal shell rear end, handle is placed in metal shell top, metal shell bottom is surface level, be beneficial to and steadily lay, for preventing friction damage can at the anti-skidding rubber of ground Surface Mount one deck, metal shell be with heating radiator, and heating radiator groove is placed in metal shell both sides and top.

In Fig. 1, F1 is fuse, prevents the excessive burning apparatus of input current, is fixed on metal shell, is convenient to the replacing of fuse by external shell dress fuse holder; N1 is alternating current filter, can clutter in filtering civil power, meets the index request of relevant electromagnetic compatibility; N2 is 50 watts of AC/DC power transfer module, in this design ap-plication, adopts alternating current 220V to turn the power module of direct current 28V, meeting the power supply needs of 28V direct current supply product, by changing its power and output voltage values, the power supply needs of other products can be met, it is convenient to change, and extensibility is strong.

Physical circuit connects: the L of the accurate power lead of positive pole order phase three pin mark of alternating current 220V input holds and passes through fuse F1 and is connected with the LIN pin of alternating current filter N1, the N end of the accurate power lead of negative pole order phase three pin mark of alternating current 220V input is connected with the NIN pin of alternating current filter N1, the LO pin of alternating current filter N1, the L pin of NO pin difference correspondence and AC/DC power transfer module N2, N pin connects, the VO+ pin of AC/DC power transfer module N2, VO-pin is the corresponding positive pole exported with direct current 28V respectively, negative pole connects, the FG end of the accurate power lead of single-phase three pin mark is connected with the FG pin of AC/DC power transfer module N2 by the FG pin of alternating current filter N1.

Claims

1. a portable 28V D.C. regulated power supply, is characterized in that: comprise the accurate power lead of single-phase three pin mark, metal shell, external shell dress fuse holder, alternating current filter N1, AC/DC power transfer module N2, digital voltage reometer, connection terminal, handle; The described accurate power lead of single-phase three pin mark fills fuse holder with external shell and is connected, external shell dress fuse holder is connected with alternating current filter, alternating current filter is connected with AC/DC power transfer module, AC/DC power transfer module is connected with connection terminal by digital voltage reometer, and connection terminal is connected with the power lead of 28V direct current supply product again; Digital voltage reometer and connection terminal are placed in metal shell front end, and the accurate power lead of single-phase three pin mark and external shell dress fuse holder are placed in metal shell rear end, and handle is placed in metal shell top.

2. the portable 28V D.C. regulated power supply of one according to claim 1, it is characterized in that: physical circuit connection is: the L of the accurate power lead of positive pole order phase three pin mark of alternating current 220V input holds and passes through fuse F1 and is connected with the LIN pin of alternating current filter N1, the N end of the accurate power lead of negative pole order phase three pin mark of alternating current 220V input is connected with the NIN pin of alternating current filter N1, the LO pin of alternating current filter N1, the L pin of NO pin difference correspondence and AC/DC power transfer module N2, N pin connects, the VO+ pin of AC/DC power transfer module N2, VO-pin is the corresponding positive pole exported with direct current 28V respectively, negative pole connects, the FG end of the accurate power lead of single-phase three pin mark is connected with the FG pin of AC/DC power transfer module N2 by the FG pin of alternating current filter N1.

3. the portable 28V D.C. regulated power supply of one according to claim 2, is characterized in that: metal shell is with heating radiator, and heating radiator groove is placed in metal shell both sides and top.

4. the portable 28V D.C. regulated power supply of one according to claim 3, is characterized in that: what AC/DC power transfer module N2 adopted is the power module that alternating current 220V turns direct current 28V, and power is 50 watts.