CN203660633U - High reliability control switch circuit - Google Patents
High reliability control switch circuit Download PDFInfo
- Publication number
- CN203660633U CN203660633U CN201320784900.0U CN201320784900U CN203660633U CN 203660633 U CN203660633 U CN 203660633U CN 201320784900 U CN201320784900 U CN 201320784900U CN 203660633 U CN203660633 U CN 203660633U
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- CN
- China
- Prior art keywords
- input
- output
- negative
- rectifier bridge
- power supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
Landscapes
- Stand-By Power Supply Arrangements (AREA)
Abstract
The utility model relates to a high reliability control switch circuit. An alternating current input terminal is connected to rectifier bridge input. A rectifier bridge output positive and output negative is connected to an input positive and an input negative of a DC-DC converter. A filtering capacitor is connected in parallel between the rectifier bridge output and input. A positive terminal of the filtering capacitor is connected to the rectifier bridge output positive. An output positive of the DC-DC converter is connected in series with a first isolating diode and then is connected with a load positive terminal. An output negative of the DC-DC converter and a negative terminal of a direct current input terminal are connected to a load negative terminal. A positive terminal of the direct current input terminal is connected in series with a second isolating diode and then is connected with the load negative terminal. The circuit of the utility model can provide 220V alternating current power supply interface and a direct current power supply interface, a power supply mode is flexible and a cell can be used to provide power in an outdoor state; when the 220V alternating current has a fault, the direct current begins to provide power and uninterrupted switching is performed so that uninterruptible power supply of equipment can be realized and a power failure risk is reduced; a realization method is simple and reliability is high.
Description
Technical field
The utility model relates to a kind of input power supply and direct current input power supply power supply needs switch simultaneously equipment and technology, particularly a kind of High-reliability Control commutation circuit of exchanging.
Background technology
In portable product design, sometimes need to overlap power-supplying circuit to system two: a set of is Alternating Current Power Supply, when indoor, use; A set of is direct current supply, when outdoor, uses.This just need to solve the electrical source exchange problem between AC and DC power supply, and this handoff procedure should be avoided user intervention as far as possible.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of High-reliability Control commutation circuit, a kind of based on alternating current-direct current input system, the highly reliable circuit of realizing AC and DC input switching, and apply it to load front end or be applied in Switching Power Supply.
In order to realize the object solving the problems of the technologies described above, the utility model has adopted following technical scheme:
A kind of High-reliability Control commutation circuit of the present utility model, comprises 220V ac input end, direct-flow input end, rectifier bridge, filter capacitor, DC-DC transducer, the first isolating diode, the second isolating diode, load;
220V ac input end connects rectifier bridge input, and the output of rectifier bridge just, the negative input that connects respectively DC-DC transducer of output is just negative with input, and the output of the positive termination rectifier bridge of filter capacitor just, and it is negative that filter capacitor negative terminal connects the output of rectifier bridge; The output of DC-DC transducer is just being connected after the first isolating diode and is being connect load anode, the output negative terminal negative and direct-flow input end of DC-DC transducer connects load negative terminal, after the anode of positive termination second isolating diode of direct-flow input end, is connecing the negative terminal load negative terminal of the second isolating diode.
The first described isolating diode of this patent, the second isolating diode, be general-purpose diode.
Further concrete, the output voltage of described DC-DC transducer is higher than direct-flow input end voltage.
By adopting technique scheme, a kind of High-reliability Control commutation circuit of this patent can provide 220V Alternating Current Power Supply interface, direct current supply interface is also provided, can access 220V electric main uses, also can access DC power-supply system uses, supply power mode is flexible, is convenient to machine room power supply, and can be in outdoor use powered battery; Power supply supports AC and DC to power simultaneously, and Alternating Current Power Supply interface connects 220V electric main, and direct current supply interface connects battery or DC power-supply system; The in the situation that of preferential selection 220V Alternating Current Power Supply, in the time that 220V interchange is broken down, direct current starts power supply, and free of discontinuities is switched, and can realize the uninterrupted power supply of equipment, has reduced power failure risk; This circuit implementing method is simple, and reliability is high.
Brief description of the drawings
A kind of High-reliability Control commutation circuit of Fig. 1 schematic diagram;
In Fig. 1, the 1st, rectifier bridge, the 2nd, filter capacitor, the 3rd, DC-DC transducer, 4 is first isolating diodes, 5 is second isolating diodes, the 6th, load.
Embodiment
Below in conjunction with accompanying drawing, this patent is further explained.But the protection range of this patent is not limited to concrete execution mode.
Embodiment 1
Below in conjunction with accompanying drawing, the utility model is described in more detail.
As shown in Figure 1, a kind of High-reliability Control commutation circuit, has two inputs, is respectively that 220V exchanges input and direct current input; This circuit can be inputted 220V alternating voltage, can input direct voltage, also can input 220V alternating voltage and direct voltage simultaneously; While inputting 220V alternating voltage and direct voltage, preferentially select 220V alternating voltage, in the time that 220V interchange is broken down, direct current starts power supply simultaneously, and free of discontinuities is switched, and can realize the uninterrupted power supply of equipment.
Ac input end input 220V alternating voltage, by rectifier bridge 1,220V alternating voltage is converted to direct voltage, filter capacitor 2 makes the voltage after rectification more level and smooth, then be input to DC-DC transducer 3, the high voltage of input is converted to low-voltage by DC-DC transducer 3, by powering for load 6 after the first isolating diode 4; Direct-flow input end input direct-current, by powering for load 6 after the second isolating diode 5.
220V exchanges input power supply and direct current input is powered while existence simultaneously, the first isolating diode 4 makes DC input voitage power supply not affect the power supply of 220V AC-input voltage, and the second isolating diode 5 makes the power supply of 220V AC-input voltage not affect DC input voitage power supply; This circuit is preferentially to select the power supply of 220V AC-input voltage, so the output voltage of DC-DC transducer 3 is all the time higher than DC input voitage; Because the output voltage of DC-DC transducer 3 is all the time higher than direct-flow input end voltage, therefore powered for load 6 by DC-DC transducer 3, namely exchange input power supply by 220V; In the time that 220V interchange is broken down, the output voltage of DC-DC transducer 3 does not have or reduces, and is input as load 6 powers by direct current, and this handoff procedure is that free of discontinuities is switched, and makes load 6 uninterrupted power supplies.
This circuit is directly to power for load 6, and this circuit can be expanded again, then adds one-level DC-DC conversion, be converted to after different output voltages, and be different load supplyings.
Claims (2)
1. a High-reliability Control commutation circuit, is characterized in that: comprise 220V ac input end, direct-flow input end, rectifier bridge (1), filter capacitor (2), DC-DC transducer (3), the first isolating diode (4), the second isolating diode (5), load (6);
220V ac input end connects rectifier bridge (1) input, the output of rectifier bridge (1) just (+), output negative (-) to connect respectively the input of DC-DC transducer (3) just negative with input, and just (+) of output of the positive termination rectifier bridge (1) of filter capacitor (2), filter capacitor (2) negative terminal connects the output negative (-) of rectifier bridge (1); The output of DC-DC transducer is just being connected after the first isolating diode (4) and is being connect load (6) anode, the output negative terminal negative and direct-flow input end of DC-DC transducer connects load (6) negative terminal, after the anode of positive termination second isolating diode (5) of direct-flow input end, is connecing negative terminal load (6) negative terminal of the second isolating diode (5).
2. High-reliability Control commutation circuit according to claim 1, is characterized in that: the output voltage of described DC-DC transducer (3) is higher than direct-flow input end voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320784900.0U CN203660633U (en) | 2013-12-04 | 2013-12-04 | High reliability control switch circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320784900.0U CN203660633U (en) | 2013-12-04 | 2013-12-04 | High reliability control switch circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203660633U true CN203660633U (en) | 2014-06-18 |
Family
ID=50926986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320784900.0U Expired - Fee Related CN203660633U (en) | 2013-12-04 | 2013-12-04 | High reliability control switch circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203660633U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105391163A (en) * | 2015-12-15 | 2016-03-09 | 福建星海通信科技有限公司 | Alternating current/direct current power supply switching apparatus |
-
2013
- 2013-12-04 CN CN201320784900.0U patent/CN203660633U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105391163A (en) * | 2015-12-15 | 2016-03-09 | 福建星海通信科技有限公司 | Alternating current/direct current power supply switching apparatus |
| CN105391163B (en) * | 2015-12-15 | 2018-09-25 | 福建星海通信科技有限公司 | A kind of power of alterating and direct current power switching device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140618 Termination date: 20191204 |