CN201717794U - Capacitor voltage reducing circuit using impedance input filter - Google Patents
Capacitor voltage reducing circuit using impedance input filter Download PDFInfo
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- CN201717794U CN201717794U CN2010201233627U CN201020123362U CN201717794U CN 201717794 U CN201717794 U CN 201717794U CN 2010201233627 U CN2010201233627 U CN 2010201233627U CN 201020123362 U CN201020123362 U CN 201020123362U CN 201717794 U CN201717794 U CN 201717794U
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- surge absorbing
- impedance input
- input filtering
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- 239000003990 capacitor Substances 0.000 title claims abstract description 21
- 238000001914 filtration Methods 0.000 claims abstract description 39
- 239000004065 semiconductor Substances 0.000 claims description 7
- 230000006837 decompression Effects 0.000 claims description 6
- 238000005070 sampling Methods 0.000 claims description 5
- 230000003321 amplification Effects 0.000 claims description 4
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 4
- 230000000452 restraining effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000007634 remodeling Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
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Abstract
In the existing capacitor voltage reducing circuit, only capacitor input filters are adopted behind a rectifier circuit, thereby producing strong surge current and high harmonic in a power source circuit; and when the power is high, the impact and the damage to filter capacitors and the influence on the power source circuit cannot be ignored. The utility model provides a capacitor voltage reducing circuit using an impedance input filter, which is characterized in that the capacitor voltage reducing circuit comprises a voltage reducing capacitor C1 (1), a rectifier circuit (2), the impedance input filter (3), a surge absorbing circuit (4) and a load (5); after one end of an alternating current power source passes through the voltage reducing capacitor C1 (1), the two ends of the alternating current power source are simultaneously connected with an input terminal of the rectifier circuit (2); two output terminals of the rectifier circuit (2) are connected with two input terminals of the impedance input filter (3); two output terminals of the impedance input filter (3) are connected with two input terminals of the surge absorbing circuit (4); and two output terminals of the surge absorbing circuit (4) are connected with two terminals of the load (5). The utility model uses the impedance input filter to replace the ordinary filtering capacitors, and the impedance has a function of restraining the surge current, thereby greatly reducing the impact of the surge current to the filtering capacitor, reducing the damage of the high harmonic to the power source, and improving the efficiency and the stability of the circuit.
Description
Technical field
The utility model relates to a kind of capacity voltage dropping circuit with impedance input filtering.
Background technology
Known capacity voltage dropping circuit, behind rectification circuit, the full electric capacity that adopts is imported filtering, and not only surge current is big for this, and in electric power loop, the high order harmonic component that causes is also very big, when power is big, be very important to the impact damage of filter capacitor with to the influence of power circuit, so in the application of higher-wattage, must reduce this influence.
The utility model content
In order to solve existing capacity voltage dropping circuit limit inrush currents deficiency, in electric power loop, the shortcoming that the high order harmonic component that causes is big, provide a kind of influence to power circuit little, to the safer capacity voltage dropping circuit of load, the utility model proposes following technical scheme:
1, a kind of capacity voltage dropping circuit with impedance input filtering comprises: 1 decompression capacitor C1,2 rectification circuits, 3 impedances input filtering, 4 surge absorbing circuits, 5 loads; AC power one end is behind decompression capacitor C1,1, two ends connect the input of rectification circuit 2 simultaneously, it exports two inputs of two termination impedance input filtering 3, two inputs of two output termination surge absorbing circuits 4 of impedance input filtering 3, two outputs of surge absorbing circuit 4 connect two ends of load 5.
2, described rectification circuit 2 can be made up of full-wave bridge rectifier circuit or half-wave voltage doubler.
3, described, impedance input filtering 3 can be imported filtering or inductance input filtering is formed by resistance.
4, described surge absorbing circuit 4 is made up of semiconductor device BG with amplification characteristic and sampling resistor R2, the utmost point of BG is as an input of surge absorbing circuit 4, connect an end of impedance input filtering 3 outputs, be connected to load again and make an output of surge absorbing circuit 4, another utmost point of BG is as another input of surge absorbing circuit 4, connect the other end of impedance input filtering 3 outputs, after being connected in series sampling resistor R2 again, connect the other end of load 5, make another output of surge absorbing circuit 4, another output of surge absorbing circuit 4 is received the control end of BG simultaneously.
5, described surge absorbing circuit 4 is made up of semiconductor device D with stabilized voltage characteristic and current-limiting resistance R3, two ends of D are as two inputs of surge absorbing circuit 4, one terminates on the end of impedance input filtering 3 outputs, be connected in series current-limiting resistance R3 again and be connected to the output that surge absorbing circuit 4 is made in load, another input of surge absorbing circuit 4 is connected on the other end of impedance input filtering 3 outputs, is connected to another output that surge absorbing circuit 4 is made in load 5 again.
6, described load 5 is LED lamps, can be by single led pipe or the series connection of a plurality of LED pipe, and parallel connection or series-parallel connection are formed.
The beneficial effects of the utility model
Circuit design has adopted impedance input filtering, has reduced to have guaranteed payload security to the impact damage of filter capacitor with to the influence of power circuit.
Description of drawings
Following accompanying drawing describes content of the present utility model in detail.
Fig. 1 is a functional-block diagram of the present utility model.
Fig. 2 is one of electrical schematic diagram of the present utility model.
Fig. 3 is two of an electrical schematic diagram of the present utility model.
Fig. 4 is three of an electrical schematic diagram of the present utility model.
Fig. 5 is four of an electrical schematic diagram of the present utility model.
Embodiment
Following embodiment explains in conjunction with the accompanying drawings.
Fig. 1 is a functional-block diagram of the present utility model.AC power can be an electric main, one end is through decompression capacitor C1 (1) step-down, input to rectification circuit (2) together with the other end then, rectification circuit can be a bridge rectifier, it also can be voltage doubling rectifing circuit, the output of rectification circuit two ends, through impedance input filtering (3), be filtered into direct current, this impedance input filtering has the effect of restraining surge current, the two ends output of impedance input filtering (3), two inputs receiving surge absorbing circuit (4) absorb surge current, and the output two of surge absorbing circuit (4) terminates to load (5).
Fig. 2 is first embodiment of the present utility model.Electric main two ends of input, wherein an end is through decompression capacitor C1 (1) step-down, input to together by D1 with the other end then, D2, D3, D4 forms bridge rectifier (2), one termination filter resistance R1, one end of bridge rectifier output, an input as impedance input filtering (3), the end of another termination filter capacitor C2 of filter resistance R1 connects the semiconductor device with amplification characteristic such as the utmost point of Darlington circuit BG, again as input one end of surge absorbing circuit (4), the end that this end is exported as surge absorbing circuit (4) again, connect an end of load (5) LED lamp again, Darlington circuit BG is made up of a PNP pipe and the complementation of a NPN pipe, and another utmost point of Darlington circuit BG connects the other end of filter capacitor C2, and and the other end of bridge rectifier output be connected together, this end meets sampling resistor R1 again, and the other end of R1 is as the other end of surge absorbing circuit (4) output, connect the other end of load (5) LED lamp, this end also connects the control utmost point of Darlington circuit BG.The voltage that surge current produces by R1 enters the control utmost point of BG, drives BG and absorbs surge current.BG Darlington circuit among Fig. 2 also can be any semiconductor device with amplification characteristic.
Fig. 3 is second embodiment of the present utility model.The surge absorbing circuit of this circuit (4); form by semiconductor device D with stabilized voltage characteristic and current-limiting resistance R3; two ends of D are as two inputs of surge absorbing circuit (4); one terminates on the filter resistance R1; and and filter capacitor C2 one terminate at together; be connected in series current-limiting resistance R3 again and be connected to load; make an output of surge absorbing circuit (4); the other end is connected on the other end of C2; be connected to load (5) LED lamp again, make another output of surge absorbing circuit (4), the surge current of being restrained by R1; absorbed by D again, better protection load.
Fig. 4 is the 3rd embodiment of the present utility model.This circuit is the remodeling of Fig. 2, and the filter resistance R1 in its impedance input filtering (3) is replaced by filter inductance L, and better filter effect is arranged.
Fig. 5 is the 4th embodiment of the present utility model.This circuit is the remodeling of Fig. 3, and the filter resistance R1 in its impedance input filtering (3) is replaced by filter inductance L, and better filter effect is arranged.
The LED lamp can be made up of the series, parallel or the series-parallel connection of single pipe or a plurality of pipes.
In sum, the utility model replaces common current-limiting resistance with filter inductance, has not only reduced the power consumption of current-limiting resistance greatly but also can reduce the impact of surge current to surge circuit and load, has improved the efficient and the stability of circuit.
Claims (6)
1. the capacity voltage dropping circuit with impedance input filtering is characterized in that comprising decompression capacitor C1 (1), rectification circuit (2), impedance input filtering (3), surge absorbing circuit (4), load (5); AC power one end is behind decompression capacitor C1 (1), two ends connect the input of rectification circuit (2) simultaneously, it exports two inputs of two termination impedance input filtering (3), two inputs of two output termination surge absorbing circuits (4) of impedance input filtering (3), two outputs of surge absorbing circuit (4) connect two ends of load (5).
2. according to a kind of capacity voltage dropping circuit of claim 1, it is characterized in that described rectification circuit (2), can form by full-wave bridge rectifier circuit or half-wave voltage doubler with impedance input filtering.
3. according to a kind of capacity voltage dropping circuit of claim 1 with impedance input filtering, it is characterized in that describedly, impedance input filtering (3) can be imported filtering or inductance input filtering is formed by resistance.
4. according to a kind of capacity voltage dropping circuit of claim 1 with impedance input filtering, it is characterized in that described surge absorbing circuit (4) is made up of semiconductor device BG with amplification characteristic and sampling resistor R2, the utmost point of BG is as an input of surge absorbing circuit (4), connect an end of impedance input filtering (3) output, be connected to load again and make an output of surge absorbing circuit (4), another utmost point of BG is as another input of surge absorbing circuit (4), connect the other end of impedance input filtering (3) output, after being connected in series sampling resistor R2 again, connect the other end of load (5), make another output of surge absorbing circuit (4), this end is received the control end of BG simultaneously.
5. according to a kind of capacity voltage dropping circuit of claim 1 with impedance input filtering, it is characterized in that described surge absorbing circuit (4) is made up of semiconductor device D with stabilized voltage characteristic and current-limiting resistance R3, two ends of D are as two inputs of surge absorbing circuit (4), one terminates on the end of impedance input filtering (3) output, be connected in series current-limiting resistance R3 again and be connected to the output that surge absorbing circuit (4) is made in load, another input of surge absorbing circuit (4), be connected on the other end of impedance input filtering (3) output, be connected to another output that surge absorbing circuit (4) is made in load (5) again.
6. according to a kind of capacity voltage dropping circuit of claim 1, it is characterized in that described load (5) is the LED lamp with impedance input filtering, can be by single led pipe or the series connection of a plurality of LED pipe, parallel connection or series-parallel connection are formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201233627U CN201717794U (en) | 2010-03-04 | 2010-03-04 | Capacitor voltage reducing circuit using impedance input filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201233627U CN201717794U (en) | 2010-03-04 | 2010-03-04 | Capacitor voltage reducing circuit using impedance input filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201717794U true CN201717794U (en) | 2011-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201233627U Expired - Fee Related CN201717794U (en) | 2010-03-04 | 2010-03-04 | Capacitor voltage reducing circuit using impedance input filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201717794U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102694477A (en) * | 2012-06-14 | 2012-09-26 | 邹溪 | High-voltage alternating current power supply, low-voltage alternating current power supply and low-voltage direct current power supply common-base circuit |
| CN102959819A (en) * | 2011-03-16 | 2013-03-06 | 惠而浦股份公司 | System and method of streamlining energy efficiency for application in cooling equipment compressors |
| CN103648203A (en) * | 2013-01-08 | 2014-03-19 | 李仁彬 | Little power consumption type energy-saving LED lamp and circuit thereof |
| TWI642262B (en) * | 2017-07-17 | 2018-11-21 | 台達電子工業股份有限公司 | Power supply |
| CN109750563A (en) * | 2019-02-01 | 2019-05-14 | 吉林省金仑科技有限公司 | A kind of power governor and adjusting method of melting snow at railroad switches system |
| US10498222B2 (en) | 2017-07-17 | 2019-12-03 | Delta Electronics, Inc. | Power supply |
-
2010
- 2010-03-04 CN CN2010201233627U patent/CN201717794U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102959819A (en) * | 2011-03-16 | 2013-03-06 | 惠而浦股份公司 | System and method of streamlining energy efficiency for application in cooling equipment compressors |
| CN102959819B (en) * | 2011-03-16 | 2015-11-25 | 惠而浦股份公司 | For the system and method for the raising energy efficiency in cooling device compressor |
| CN102694477A (en) * | 2012-06-14 | 2012-09-26 | 邹溪 | High-voltage alternating current power supply, low-voltage alternating current power supply and low-voltage direct current power supply common-base circuit |
| CN102694477B (en) * | 2012-06-14 | 2014-10-29 | 邹溪 | High-voltage alternating current power supply, low-voltage alternating current power supply and low-voltage direct current power supply common-base circuit |
| CN103648203A (en) * | 2013-01-08 | 2014-03-19 | 李仁彬 | Little power consumption type energy-saving LED lamp and circuit thereof |
| TWI642262B (en) * | 2017-07-17 | 2018-11-21 | 台達電子工業股份有限公司 | Power supply |
| US10498222B2 (en) | 2017-07-17 | 2019-12-03 | Delta Electronics, Inc. | Power supply |
| CN109750563A (en) * | 2019-02-01 | 2019-05-14 | 吉林省金仑科技有限公司 | A kind of power governor and adjusting method of melting snow at railroad switches system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Tang Zhengning Document name: Notification to Pay the Fees |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110119 Termination date: 20150304 |
|
| EXPY | Termination of patent right or utility model |