CN202364111U - Automatic instantaneous power failure protection control circuit built based on power switch adjuster - Google Patents
Automatic instantaneous power failure protection control circuit built based on power switch adjuster Download PDFInfo
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- CN202364111U CN202364111U CN2011205064209U CN201120506420U CN202364111U CN 202364111 U CN202364111 U CN 202364111U CN 2011205064209 U CN2011205064209 U CN 2011205064209U CN 201120506420 U CN201120506420 U CN 201120506420U CN 202364111 U CN202364111 U CN 202364111U
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Abstract
The utility model discloses an automatic instantaneous power failure protection control circuit built based on a power switch adjuster. The automatic protection control circuit comprises a booster charging circuit, a comparison control circuit, a switch circuit, a second capacitor and a third capacitor, wherein the booster charging circuit is connected with the comparison control circuit and the switch circuit; the second capacitor is connected between the booster charging circuit and the comparison control circuit, and the third capacitor is connected at one side of the switch circuit. The automatic protection control circuit disclosed by the utility model is used for uninterruptible power supply of any direct-current-output secondary power supply, so that the secondary power supply works stably and reliably.
Description
Technical field
The utility model relates to a kind of instantaneous power-down and protects controller automatically, particularly relates to a kind of instantaneous power-down that makes up based on the mains switch adjuster and protects control circuit automatically.
Background technology
In the avionic device of high reliability power supply; Generally require secondary power supply to have the instantaneous power-down defencive function; Promptly do that power supply is switched each other and when momentary power failure takes place when two groups of power supplys, secondary power supply should be able to continued power, does not pause with the work of guaranteeing electronic equipment.
Have the instantaneous power-down defencive function in order to satisfy, existing secondary power supply has generally adopted ready-made direct current transducer that electric capacity is charged, and realizes power down protection; Its defective is that input voltage range is narrow; Import withstand voltage lowly, need additional input front end overvoltage crowbar, the input supply voltage change is big to the output power down influence of holding time; Charging voltage to electric capacity is non-adjustable, and cost is high.
The utility model content
The utility model technical problem to be solved provides a kind of instantaneous power-down that makes up based on the mains switch adjuster and protects control circuit automatically, and it is used to do the uninterrupted power supply of any direct current output secondary power supply.
The utility model solves above-mentioned technical problem through following technical proposals: a kind of instantaneous power-down that makes up based on the mains switch adjuster is protected control circuit automatically; It is characterized in that; It comprises boost charge circuit, comparison control circuit, switching circuit, second electric capacity, the 3rd electric capacity; The boost charge circuit is connected with comparison control circuit, switching circuit, and second electric capacity is connected between boost charge circuit and the comparison control circuit, and the 3rd electric capacity is connected a side of switching circuit.
Preferably; Said boost charge electric routing switch adjuster, first electric capacity, the 4th electric capacity, inductance, first resistance, second resistance, the 5th resistance, the 7th resistance and first diode are formed; Is connected with switch adjuster again after the parallel connection of switch adjuster and inductance, first resistance and first capacitances in series, second resistance be connected with switch adjuster again after the 7th resistance is connected; Be connected with switch adjuster again after the parallel connection of the 4th electric capacity and first electric capacity, the 5th resistance and the series connection of first diode.
Preferably, said comparison control circuit is made up of transport and placing device, the 3rd resistance, the 4th resistance, the 6th resistance and the 3rd diode, is connected with transport and placing device again after the series connection of the 4th resistance, the 6th resistance, the 3rd resistance be connected with transport and placing device again after the 3rd diode is connected.
Preferably; Said switching circuit is made up of the 6th FET, the 7th FET, the 8th resistance, the 9th resistance and the 5th diode; The 6th FET, the 9th resistance and the parallel connection of the 5th diode, the 8th resistance is connected between the 6th FET and the 7th FET.
The positive progressive effect of the utility model is: the utility model can realize wide region input boost charge and input is under-voltage or power down is instantaneous, and the output uninterrupted power supply makes secondary power supply working stability, reliable.
Description of drawings
The instantaneous power-down that Fig. 1 makes up based on the mains switch adjuster for the utility model is protected the sketch map of control circuit automatically.
Embodiment
Provide the utility model preferred embodiment below in conjunction with accompanying drawing, to specify the technical scheme of the utility model.
As shown in Figure 1; The instantaneous power-down that the utility model makes up based on the mains switch adjuster protects control circuit to comprise boost charge circuit, comparison control circuit, switching circuit, second capacitor C 2, the 3rd capacitor C 3 automatically; The boost charge circuit is connected with comparison control circuit, switching circuit; Second capacitor C 2 is connected between boost charge circuit and the comparison control circuit, and the 3rd capacitor C 3 is connected a side of switching circuit.Boost charge electric routing switch adjuster V4, first capacitor C 1, the 4th capacitor C 4, inductance L 1, first resistance R 1, second resistance R 2, the 5th resistance R 5, the 7th resistance R 7 and the first diode V1 form; Switch adjuster V4 and inductance L 1 parallel connection; Be connected with switch adjuster V4 again after first resistance R 1 and the series connection of first capacitor C 1; Be connected with switch adjuster V4 again after second resistance R 2 and the series connection of the 7th resistance R 7; The 4th capacitor C 4 and 1 parallel connection of first capacitor C are connected with switch adjuster V4 after the 5th resistance R 5 and the first diode V1 series connection again.Comparison control circuit is made up of transport and placing device D1B, the 3rd resistance R 3, the 4th resistance R 4, the 6th resistance R 6 and the 3rd diode V3; Is connected with transport and placing device D1B again after the 4th resistance R 4,6 series connection of the 6th resistance R, the 3rd resistance R 3 be connected with transport and placing device D1B again after the 3rd diode V3 connects.Switching circuit is made up of the 6th FET V6, the 7th FET V7, the 8th resistance R 8, the 9th resistance R 9 and the 5th diode V5; The 6th FET V6, the 9th resistance R 9 and the 5th diode V5 parallel connection, the 8th resistance R 8 is connected between the 6th FET V6 and the 7th FET V7.
The utility model is to convert lower input voltage vin to higher direct voltage Vc, and second capacitor C 2 is charged, and the magnitude of voltage of direct voltage Vc is through the parameter determining of adjustment the 7th resistance R 7; With the dividing potential drop that is serially connected in the two resistance formation on the input power supply; Input electric potential signal and reference voltage as transport and placing device are made comparisons; When this current potential is lower than reference voltage, when perhaps input voltage vin lost the voltage of input, the high potential of transport and placing device output switching activity will be as the drive signal of switching circuit; When drive signal is high level, the 6th FET V6 conducting in the switching circuit, electric weight is discharged to output voltage V out on second capacitor C 2 thereby make, otherwise, when drive signal is low level, the 6th not conducting of FET V6.Second capacitor C 2 is charging capacitors.The 3rd capacitor C 3 is an afterflow electric capacity, is used to guarantee export uninterruptedly when circuit switches, and promptly is used to do the uninterrupted power supply of any direct current output secondary power supply, guarantees that the work of electronic equipment does not pause.The appearance value of second capacitor C 2 is according to out-put supply power demand size and the power down protection time is chosen, its withstand voltage is chosen according to the scope of output voltage V out, and the appearance value of the 3rd capacitor C 3 is chosen with the switching time of protection control circuit according to the watt level of out-put supply.For secondary power supply in the realization equipment has the instantaneous power-down defencive function, will protect Circuit Design in the secondary power supply loop, simultaneously; One second diode V2 of cross-over connection between input Vin and output Vout; Under the normal condition, input directly arrives output, and when the work of protection control circuit; This second diode V2 plays buffer action, makes output voltage V out not be back to input voltage vin.In the secondary power supply of aviation electronics product, the protection control circuit of utilization the utility model can make product satisfy the related specifications requirement of power supply characteristic.
Though more than described the embodiment of the utility model; But those skilled in the art is to be understood that; These only illustrate, and under the prerequisite of principle that does not deviate from the utility model and essence, can make numerous variations or modification to these execution modes.Therefore, the protection range of the utility model is limited appended claims.
Claims (4)
1. an instantaneous power-down that makes up based on the mains switch adjuster is protected control circuit automatically; It is characterized in that; It comprises boost charge circuit, comparison control circuit, switching circuit, second electric capacity, the 3rd electric capacity; The boost charge circuit is connected with comparison control circuit, switching circuit, and second electric capacity is connected between boost charge circuit and the comparison control circuit, and the 3rd electric capacity is connected a side of switching circuit.
2. the instantaneous power-down that makes up based on the mains switch adjuster as claimed in claim 1 is protected control circuit automatically; It is characterized in that; Said boost charge electric routing switch adjuster, first electric capacity, the 4th electric capacity, inductance, first resistance, second resistance, the 5th resistance, the 7th resistance and first diode are formed; Is connected with switch adjuster again after the parallel connection of switch adjuster and inductance, first resistance and first capacitances in series, second resistance be connected with switch adjuster again after the 7th resistance is connected; Be connected with switch adjuster again after the parallel connection of the 4th electric capacity and first electric capacity, the 5th resistance and the series connection of first diode.
3. the instantaneous power-down that makes up based on the mains switch adjuster as claimed in claim 1 is protected control circuit automatically; It is characterized in that; Said comparison control circuit is made up of transport and placing device, the 3rd resistance, the 4th resistance, the 6th resistance and the 3rd diode; Is connected with transport and placing device again after the series connection of the 4th resistance, the 6th resistance, the 3rd resistance be connected with transport and placing device again after the 3rd diode is connected.
4. the instantaneous power-down that makes up based on the mains switch adjuster as claimed in claim 1 is protected control circuit automatically; It is characterized in that; Said switching circuit is made up of the 6th FET, the 7th FET, the 8th resistance, the 9th resistance and the 5th diode; The 6th FET, the 9th resistance and the parallel connection of the 5th diode, the 8th resistance is connected between the 6th FET and the 7th FET.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205064209U CN202364111U (en) | 2011-12-07 | 2011-12-07 | Automatic instantaneous power failure protection control circuit built based on power switch adjuster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205064209U CN202364111U (en) | 2011-12-07 | 2011-12-07 | Automatic instantaneous power failure protection control circuit built based on power switch adjuster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202364111U true CN202364111U (en) | 2012-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205064209U Expired - Fee Related CN202364111U (en) | 2011-12-07 | 2011-12-07 | Automatic instantaneous power failure protection control circuit built based on power switch adjuster |
Country Status (1)
| Country | Link |
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| CN (1) | CN202364111U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103051044A (en) * | 2012-12-07 | 2013-04-17 | 陕西千山航空电子有限责任公司 | Power source power off maintaining circuit |
| CN104539147A (en) * | 2015-01-21 | 2015-04-22 | 青岛歌尔声学科技有限公司 | Power supply circuit and electronic product |
| CN106026716A (en) * | 2016-08-04 | 2016-10-12 | 李连洪 | Water pump voltage control device and system |
| WO2021128987A1 (en) * | 2019-12-26 | 2021-07-01 | 华为技术有限公司 | Circuit module and electronic device |
-
2011
- 2011-12-07 CN CN2011205064209U patent/CN202364111U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103051044A (en) * | 2012-12-07 | 2013-04-17 | 陕西千山航空电子有限责任公司 | Power source power off maintaining circuit |
| CN104539147A (en) * | 2015-01-21 | 2015-04-22 | 青岛歌尔声学科技有限公司 | Power supply circuit and electronic product |
| CN106026716A (en) * | 2016-08-04 | 2016-10-12 | 李连洪 | Water pump voltage control device and system |
| WO2021128987A1 (en) * | 2019-12-26 | 2021-07-01 | 华为技术有限公司 | Circuit module and electronic device |
| US11711018B2 (en) | 2019-12-26 | 2023-07-25 | Huawei Technologies Co., Ltd. | Circuit module and electronic 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 |
Granted publication date: 20120801 Termination date: 20191207 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |