CN106993354A - Capacitance decompression inductance anti-surge circuit - Google Patents
Capacitance decompression inductance anti-surge circuit Download PDFInfo
- Publication number
- CN106993354A CN106993354A CN201710207734.0A CN201710207734A CN106993354A CN 106993354 A CN106993354 A CN 106993354A CN 201710207734 A CN201710207734 A CN 201710207734A CN 106993354 A CN106993354 A CN 106993354A
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- Prior art keywords
- inductance
- circuit
- decompression
- rectification circuit
- surge
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B44/00—Circuit arrangements for operating electroluminescent light sources
Abstract
The invention discloses a kind of capacitance decompression inductance anti-surge circuit, belong to LED electronic technology fields.The capacitance decompression inductance anti-surge circuit includes decompression capacitor, the first rectification circuit, loaded for the first inductance of antisurge and first, one end of AC power is connected to an input of first rectification circuit through the decompression capacitor, and the other end of AC power is connected to another input of first rectification circuit；One output end of first rectification circuit is connected to one end of first inductance, and the other end of first inductance and another output end of first rectification circuit are respectively used to be connected to the two ends of first load.Simple in construction, service life of the invention is longer and with low cost.
Description
Technical field
The present invention relates to LED electronic technology fields, a kind of capacitance decompression inductance anti-surge circuit is particularly related to.
Background technology
General capacity voltage dropping circuit is the capacitive reactance that produces on electric capacity using alternating current to be depressured, behind take load,
Its advantage is that circuit is simple and reliable, and the loss of capacitance decompression in itself is minimum.But only under steady state conditions, capacity voltage dropping circuit
Electric current be stable.If occurring transient voltage change in circuit, the moment being powered especially is powered off, then the surge in circuit
Electric current is quite big, and this will make load be affected, and load can be damaged when serious.
It is that a resistance of being connected again in capacitance decompression loop carrys out limit inrush currents to method known to problem above,
It is too big not all right but this resistance can produce power consumption in itself, it is smaller that surge current can not be provided constraints well again, especially
It is that when high-power, resistance can produce very big power consumption and heat, not only wasted the energy but also reduced the life-span.
Authorization Notice No. discloses a kind of capacitance decompression of use inductor filter for CN201774468U utility model patent
Circuit, the circuit through rectifier circuit rectifies, then through electric capacity C2 and inductance L after electric capacity C1 decompression first with by alternating current being filtered into direct current
Electricity, this direct current is after surge absorbing circuit absorbs surge current, then is connected to load.Although the circuit can eliminate resistance damage
Consumption, and surge current is restrained effectively, still, surge current is played a major role in the circuit is surge absorbing circuit,
Electric capacity C2 and inductance L are mainly filtered effect to electric current, due to needing surge absorbing circuit to suppress surge current, lead
Cause the circuit structure complicated, cost is high.
In addition, also have some capacity voltage dropping circuits to be to access some protection circuits before load, but these protection circuits
The electronic component used such as piezo-resistance, fuse, FET etc., there is long-term life problems.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of simple in construction, service life is longer and with low cost
Capacitance decompression inductance anti-surge circuit.
In order to solve the above technical problems, present invention offer technical scheme is as follows：
A kind of capacitance decompression inductance anti-surge circuit, including decompression capacitor, the first rectification circuit, first for antisurge
Inductance and the first load, wherein：
One end of AC power is connected to an input of first rectification circuit, alternating current through the decompression capacitor
The other end in source is connected to another input of first rectification circuit；
One output end of first rectification circuit is connected to one end of first inductance, first inductance it is another
Another output end of one end and first rectification circuit is respectively used to be connected to the two ends of first load.
Further, first inductance is high-frequency inductor, and the working time of the first inductance is less than 1ms.
Further, the scope of the dead resistance of first inductance is 0.02~100 Ω, and the scope of distribution capacity is
1pf-100nf。
Further, the scope of the dead resistance of first inductance is 0.02~30 Ω, and the scope of distribution capacity is
1pf-10nf。
Further, it is parallel with resistance on the decompression capacitor.
Further, the capacitance decompression inductance anti-surge circuit also includes being used to filter the second inductance being depressured, second
Rectification circuit and the second load, one end one through second inductance connection to second rectification circuit of AC power are defeated
Enter end, the other end of AC power is connected to another input of second rectification circuit, second rectification circuit
Two output ends are respectively connecting to second load, second inductance and decompression capacitor conjugate impedance match.
Further, first rectification circuit and the second rectification circuit be bridge rectifier, half-wave rectifying circuit or
Voltage doubling rectifing circuit.
Further, first load is the first LED being made up of LED lamp bead series, parallel or series-parallel connection.
Further, second load is the second LED for being made up of LED lamp bead series, parallel or series-parallel connection, described the
One LED and the second LED are arranged on same light fixture.
The invention has the advantages that：
Compared with prior art, capacitance decompression inductance anti-surge circuit of the invention uses capacitance decompression, and uses rectification
Alternating current is converted to direct current by circuit, and the first inductance of connecting afterwards carries out the structure type of antisurge, when circuit is in alternating current
The moment that source is switched on or switched off, the first inductance produces a larger self induction electromotive force, the direction of self induction electromotive force and alternating current
In opposite direction, the passing through for obstruction alternating current of pressure, greatly reduces the alternating current by the first inductance.To sum up, this hair
Bright capacitance decompression inductance anti-surge circuit simplifies the structure of circuit while ensureing effectively to suppress surge current, drops
Low cost.And the service life of inductance is longer, the capacitance decompression inductance anti-surge circuit of the present invention has also been effectively ensured
Service life.
Brief description of the drawings
Fig. 1 is the principle block diagram of the capacitance decompression inductance anti-surge circuit of the present invention；
Fig. 2 be the present invention capacitance decompression inductance anti-surge circuit in electricity of first rectification circuit when being bridge rectifier
Principle schematic；
Fig. 3 is another principle block diagram of the capacitance decompression inductance anti-surge circuit of the present invention；
Fig. 4 is that the first rectification circuit in another structure of the capacitance decompression inductance anti-surge circuit of the present invention and second are whole
Electric principle schematic when current circuit is bridge rectifier.
Embodiment
To make the technical problem to be solved in the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and tool
Body embodiment is described in detail.
The present invention provides a kind of capacitance decompression inductance anti-surge circuit, as shown in Figures 1 to 4, including decompression capacitor C, the
One rectification circuit 1, for the first inductance L1 of antisurge and first load 2, wherein：
One end of AC power is connected to an input of the first rectification circuit 1 through decompression capacitor C, AC power it is another
One end is connected to another input of the first rectification circuit 1；
One output end of the first rectification circuit 1 is connected to inductance L1 one end, the inductance L1 other end and the first rectification
Another output end of circuit 1 is respectively used to be connected to the two ends of the first load 2.
The capacitance decompression inductance anti-surge circuit of the present invention is depressured using electric capacity C, and will exchange using the first rectification circuit 2
Electricity is converted to direct current, the first inductance L1 that connects afterwards carry out antisurge structure type, when circuit AC power connect or
The moment of disconnection, the first inductance L1 produces a larger self induction electromotive force, the direction of self induction electromotive force and the side of alternating voltage
To on the contrary, passing through for obstruction alternating current, greatly reduces the alternating current by the first inductance L1.To sum up, it is of the invention
Capacitance decompression inductance anti-surge circuit simplifies the structure of circuit, reduced while ensureing effectively to suppress surge current
Cost.And the service life of inductance is longer, the use of the capacitance decompression inductance anti-surge circuit of the present invention has also been effectively ensured
Life-span.
The first inductance L1 in the present invention is used for the pulse for preventing from producing due to capacitance decompression in power on, Huo Zheyou
The impact that the pulse produced in extraneous other reasonses is caused in itself to circuit.
Because the pulse that produces is the momentary pulse of Microsecond grade in the capacitance decompression inductance anti-surge circuit of the present invention, because
This, the first inductance L1 in the present invention is preferably high-frequency inductor, and the first inductance L1 working time is less than 1ms.
Further, since the first inductance L1 is connected in the circuit of the present invention, the size of its dead resistance is driven to circuit
The influence of efficiency of movement is larger, and the first inductance L1 distribution capacity can be impacted to momentary pulse surge, in the present invention, the
One inductance L1 dead resistance may range from 0.02~100 Ω, preferably 0.02~30 Ω, and the scope of distribution capacity can be with
For 1pf-100nf, preferably 1pf-10nf.
It is preferred that, decompression capacitor C can the above be parallel with resistance R.Resistance R is connected in parallel on decompression capacitor C, as decompression capacitor
C bleeder resistance.Certainly, if decompression capacitor C in itself have a small amount of ohmic leakages, resistance R can omit without.
As a modification of the present invention, capacitance decompression inductance anti-surge circuit further preferably includes being used to filter the of decompression
Two inductance L2, the second rectification circuit 3 and the second load 4, one end the second inductance L2 of AC power is connected to the second rectified current
One input on road 3, the other end of AC power is connected to another input of the second rectification circuit 3, the second rectified current
Two output ends on road 3 are respectively connecting to the second load 4, the second inductance L2 and decompression capacitor C conjugate impedance match.The present invention is being used
While the first inductance L1 that connects suppresses surge current, it is depressured by the way of the second inductance L2 in parallel, when the second inductance
When L2 and decompression capacitor C reaches the requirement of conjugate impedance match, the DC ripple voltage phase difference of inductance decompression and capacitance decompression is complementary,
The power factor of whole circuit can be improved.
Further, the first rectification circuit 1 and the second rectification circuit 3 are both preferably bridge rectifier, such as Fig. 2 and Fig. 4
Shown, wherein commutation diode D1, D2, D3 and D4 constitutes the first rectification circuit 1, commutation diode D5, D6, D7 and D8 composition the
Two rectification circuits 3.One end of AC power is depressured the input for being connected to commutation diode D2, AC power through decompression capacitor C
The other end be connected to commutation diode D4 input, commutation diode D2 output end series inductance L1 after be connected to first
One end of load 2, the other end of the first load 2 is connected to commutation diode D3 input.One end series electrical of AC power
Commutation diode D6 input is connected to after sense L2, the other end of AC power is connected to commutation diode D8 input,
Commutation diode D6 output end is connected to one end of the second load 4, and the other end of the second load 4 is connected to commutation diode D7
Input.The main function of bridge rectifier is that AC power is rectified into dc source and then powering load.
Certainly, the first rectification circuit 1 and the second rectification circuit 3 can also be selected in addition to from bridge rectifier
Half-wave rectifying circuit or voltage doubling rectifing circuit, army do not influence the realization of technical scheme.
It is preferred that, the first load 2 can be the first LED 2 ' being made up of LED lamp bead series, parallel or series-parallel connection.
Further, the second load 4 can be the second LED 4 ' being made up of LED lamp bead series, parallel or series-parallel connection, the
One LED 2 ' and the second LED 4 ' are arranged on same light fixture.When using circuit theory diagrams as shown in Figure 3 and Figure 4,
Because inductance decompression is in parallel with electric capacity pressurization, when the second inductance L2 and decompression capacitor C reaches the requirement of conjugate impedance match, both
The phase difference of DC ripple voltage can be complementary, the first LED 2 ' and the second LED 4 ' on same light fixture after can exempt from
Except LED etc. light and shade flashes.
Described above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, on the premise of principle of the present invention is not departed from, some improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of capacitance decompression inductance anti-surge circuit, it is characterised in that including decompression capacitor, the first rectification circuit, for resisting
First inductance of surge and the first load, wherein：
One end of AC power is connected to an input of first rectification circuit through the decompression capacitor, AC power
The other end is connected to another input of first rectification circuit；
One output end of first rectification circuit is connected to one end of first inductance, the other end of first inductance
It is respectively used to be connected to the two ends of first load with another output end of first rectification circuit.
2. capacitance decompression inductance anti-surge circuit according to claim 1, it is characterised in that first inductance is high frequency
Inductance, the working time of the first inductance is less than 1ms.
3. capacitance decompression inductance anti-surge circuit according to claim 2, it is characterised in that in parallel on the decompression capacitor
There is resistance.
4. capacitance decompression inductance anti-surge circuit according to claim 1, it is characterised in that the capacitance decompression inductance resists
Surge circuit also includes the second inductance, the second rectification circuit and the second load for being used to filter decompression, one end warp of AC power
Second inductance connection is to an input of second rectification circuit, and the other end of AC power is connected to described second
Another input of rectification circuit, two output ends of second rectification circuit are respectively connecting to second load, institute
State the second inductance and decompression capacitor conjugate impedance match.
5. capacitance decompression inductance anti-surge circuit according to claim 4, it is characterised in that first rectification circuit and
Second rectification circuit is bridge rectifier, half-wave rectifying circuit or voltage doubling rectifing circuit.
6. according to any described capacitance decompression inductance anti-surge circuit in claim 1 to 5, it is characterised in that described first
Load the first LED to be made up of LED lamp bead series, parallel or series-parallel connection.
7. capacitance decompression inductance anti-surge circuit according to claim 6, it is characterised in that second load is served as reasons
Second LED of LED lamp bead series, parallel or series-parallel connection composition, first LED and the second LED are arranged on same lamp
On tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710207734.0A CN106993354A (en) | 2017-03-31 | 2017-03-31 | Capacitance decompression inductance anti-surge circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710207734.0A CN106993354A (en) | 2017-03-31 | 2017-03-31 | Capacitance decompression inductance anti-surge circuit |
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| Publication Number | Publication Date |
|---|---|
| CN106993354A true CN106993354A (en) | 2017-07-28 |
Family
ID=59414693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710207734.0A Pending CN106993354A (en) | 2017-03-31 | 2017-03-31 | Capacitance decompression inductance anti-surge circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109067167A (en) * | 2018-08-08 | 2018-12-21 | 杭州中恒电气股份有限公司 | A kind of PFC lightning protection circuit |
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| CN2357208Y (en) * | 1998-10-08 | 2000-01-05 | 广州市荔湾区华安堡电子灯饰厂 | LED combined lighting device |
| TWM363548U (en) * | 2009-02-05 | 2009-08-21 | Der-Ming Juang | AC-driven LED lighting device |
| CN101553064A (en) * | 2009-04-28 | 2009-10-07 | 普照光电科技股份有限公司 | Drive circuit of LED |
| CN102149233A (en) * | 2010-02-10 | 2011-08-10 | 辽宁宝林集团节能科技有限公司 | LED (Light Emitting Device) light source control device |
| CN102348307A (en) * | 2010-07-30 | 2012-02-08 | 深圳市桑达实业股份有限公司 | LED street lamp and driving power supply circuit thereof |
| CN102420521A (en) * | 2010-09-28 | 2012-04-18 | 汤征宁 | Capacitor and inductor conjugated voltage-dropping circuit |
| CN202488830U (en) * | 2012-02-28 | 2012-10-10 | 福建农林大学 | High-power-factor low-distortion-rate high-power light-emitting diode (LED) drive circuit |
| CN203120222U (en) * | 2012-12-25 | 2013-08-07 | 深圳市客亿电子科技有限公司 | Current adjusting control capacitance-resistance driving LED lamp circuit |
| CN204119604U (en) * | 2014-09-10 | 2015-01-21 | 浙江省能源与核技术应用研究院 | The Multi-channel high-frequency impulse circuit of LED lamp |
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2017
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2357208Y (en) * | 1998-10-08 | 2000-01-05 | 广州市荔湾区华安堡电子灯饰厂 | LED combined lighting device |
| TWM363548U (en) * | 2009-02-05 | 2009-08-21 | Der-Ming Juang | AC-driven LED lighting device |
| CN101553064A (en) * | 2009-04-28 | 2009-10-07 | 普照光电科技股份有限公司 | Drive circuit of LED |
| CN102149233A (en) * | 2010-02-10 | 2011-08-10 | 辽宁宝林集团节能科技有限公司 | LED (Light Emitting Device) light source control device |
| CN102348307A (en) * | 2010-07-30 | 2012-02-08 | 深圳市桑达实业股份有限公司 | LED street lamp and driving power supply circuit thereof |
| CN102420521A (en) * | 2010-09-28 | 2012-04-18 | 汤征宁 | Capacitor and inductor conjugated voltage-dropping circuit |
| CN202488830U (en) * | 2012-02-28 | 2012-10-10 | 福建农林大学 | High-power-factor low-distortion-rate high-power light-emitting diode (LED) drive circuit |
| CN203120222U (en) * | 2012-12-25 | 2013-08-07 | 深圳市客亿电子科技有限公司 | Current adjusting control capacitance-resistance driving LED lamp circuit |
| CN204119604U (en) * | 2014-09-10 | 2015-01-21 | 浙江省能源与核技术应用研究院 | The Multi-channel high-frequency impulse circuit of LED lamp |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109067167A (en) * | 2018-08-08 | 2018-12-21 | 杭州中恒电气股份有限公司 | A kind of PFC lightning protection circuit |
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Application publication date: 20170728 |
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| RJ01 | Rejection of invention patent application after publication |