CN102931647A - Surge current suppression circuit and lamp - Google Patents
Surge current suppression circuit and lamp Download PDFInfo
- Publication number
- CN102931647A CN102931647A CN2011102283092A CN201110228309A CN102931647A CN 102931647 A CN102931647 A CN 102931647A CN 2011102283092 A CN2011102283092 A CN 2011102283092A CN 201110228309 A CN201110228309 A CN 201110228309A CN 102931647 A CN102931647 A CN 102931647A
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- switching tube
- relay
- divider resistance
- surge current
- resistor
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- 230000001629 suppression Effects 0.000 title claims abstract description 33
- 239000003990 capacitor Substances 0.000 claims abstract description 27
- 239000000919 ceramic Substances 0.000 claims description 21
- 239000004065 semiconductor Substances 0.000 claims description 16
- 229910052573 porcelain Inorganic materials 0.000 abstract 3
- 238000010586 diagram Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The invention is suitable for the field of protection circuits and provides a surge current suppression circuit and a lamp. The surge current suppression circuit comprises a resistor R1, a relay K1, a switching tube and a porcelain capacitor C1; the switching tube is at an off state at the instant of electrifying the circuit when voltages at two ends of the porcelain capacitor C1 are not high enough to reach the threshold voltage of the control end of the switching tube, and a coil circuit of an electromagnet of the relay K1 is open-circuited, a switch of the relay K1 is powered off, the current loop of an electric load needs to pass through the resistor R1 to form a working loop, and the surge current generated at the instant of electrifying can be eliminated by the resistor R1; and after the surge current peak passes, when the voltages at two ends of the porcelain capacitor C1 reach the threshold voltage at the control end of the switching tube, the switching tube is at an on state, the switch of the relay K1 is switched on, and therefore the resistor R1 is separated from the working circuit. The surge current suppression circuit has the advantages of small size, low cost and incapability of reducing the electric efficiency of a protected circuit.
Description
Technical field
The invention belongs to the protective circuit field, relate in particular to a kind of surge current suppression circuit and light fixture.
Background technology
At present in the switching power circuit design; used a large amount of capacitive devices; electrochemical capacitor not only can be used as energy-storage travelling wave tube; and have good filter action, thus be widely applied, but according to the intrinsic characteristic of electrochemical capacitor as can be known; electrochemical capacitor equals instantaneous short circuit at powered on moment; can produce very large surge current (can reach 100A) this moment, can cause the overcurrent protective device misoperation, brought serious inconvenience to the user.
Now, the method for surge current suppression generally adopts surge suppressing device or series connection power resistor to come the generation of surge current suppression, but the former volume is very large, expensive; Although the latter is with low cost, resistor is understood lot of energy, greatly reduces the electrical efficiency of circuit.
Summary of the invention
The object of the present invention is to provide a kind of surge current suppression circuit, be intended to solve present surge current suppression circuit and have the problem that volume is large, cost is expensive and can reduce the electrical efficiency of protected circuit.
The embodiment of the invention is achieved in that a kind of surge current suppression circuit, is connected to power supply and with between the electric loading, described surge current suppression circuit comprises:
Resistor R1, divider resistance R2, divider resistance R3, relay K 1, switching tube and ceramic disc capacitor C1;
Described resistor R1 is connected between the positive pole and the power end with electric loading of described power supply, the switch of described relay K 1 is in parallel with resistor R1, the switch of described relay K 1 is normal open switch, the first contact of described switch and the second holding contact disconnect, the positive pole of the described power supply of the first termination of the electromagnet of described relay K 1, the hot end of the described switching tube of the second termination of the electromagnet of described relay K 1, the cold end of described switching tube connects the negative pole and the ground end of using electric loading of described power supply simultaneously, described divider resistance R2 and divider resistance R3 are serially connected between the positive pole and negative pole of described power supply successively, the public connecting end of described divider resistance R2 and divider resistance R3 connects the control end of described switching tube, and described ceramic disc capacitor C1 is connected between the control end and cold end of described switching tube.
Another object of the present invention is to provide a kind of light fixture, comprise lamp circuit, also comprise the surge current suppression circuit that is connected between power supply and the lamp circuit, described surge current suppression circuit comprises:
Resistor R1, divider resistance R2, divider resistance R3, relay K 1, switching tube and ceramic disc capacitor C1;
Described resistor R1 is connected between the power end of the positive pole of described power supply and lamp circuit, the switch of described relay K 1 is in parallel with resistor R1, the switch of described relay K 1 is normal open switch, the first contact of described switch and the second holding contact disconnect, the positive pole of the described power supply of the first termination of the electromagnet of described relay K 1, the hot end of the described switching tube of the second termination of the electromagnet of described relay K 1, the cold end of described switching tube connects the negative pole of described power supply and the ground end of lamp circuit simultaneously, described divider resistance R2 and divider resistance R3 are serially connected between the positive pole and negative pole of described power supply successively, the public connecting end of described divider resistance R2 and divider resistance R3 connects the control end of described switching tube, and described ceramic disc capacitor C1 is connected between the control end and cold end of described switching tube.
In embodiments of the present invention; surge current suppression circuit comprises resistor R1; relay K 1; switching tube and ceramic disc capacitor C1; the circuit powered on moment; the undertension at ceramic disc capacitor C1 two ends is when reaching the threshold voltage of switch controlled end; switching tube is in off state; relay K 1 magnet spool loop is in open circuit; the switch of relay K 1 disconnects; the electricity consumption load current loop need to form the work loop through resistor R1; resistor R1 can eliminate the surge current that powered on moment produces; and the surge current peak value was after the past; when the voltage at ceramic disc capacitor C1 two ends reached the threshold voltage of switch controlled end, switching tube was in conducting state, the switch closure of relay K 1; so that resistor R1 breaks away from operating circuit, this surge current suppression circuit volume is little; cost is low and can not reduce the electrical efficiency of protected circuit.
Description of drawings
The circuit structure diagram of the surge current suppression circuit that Fig. 1 provides for first embodiment of the invention;
The circuit structure diagram of the surge current suppression circuit that Fig. 2 provides for second embodiment of the invention;
The circuit structure diagram of the light fixture that Fig. 3 provides for first embodiment of the invention;
The circuit structure diagram of the light fixture that Fig. 4 provides for second embodiment of the invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
Fig. 1 shows the circuit structure of the surge current suppression circuit that first embodiment of the invention provides, and for convenience of explanation, only shows the part relevant with the embodiment of the invention, and details are as follows.
Surge current suppression circuit 100 is connected to power supply and with between the electric loading 200, surge current suppression circuit 100 comprises:
Resistor R1, divider resistance R2, divider resistance R3, relay K 1, switching tube 101 and ceramic disc capacitor C1;
Resistor R1 is connected between the positive pole and the power end with electric loading 200 of power supply, the switch of relay K 1 is in parallel with resistor R1, the switch of relay K 1 is normal open switch, the first contact of switch and the second holding contact disconnect, the positive pole of the first termination power of the electromagnet of relay K 1, the hot end of the second termination switching tube 101 of the electromagnet of relay K 1, the cold end of switching tube 101 connects the negative pole and the ground end of using electric loading 200 of power supply simultaneously, divider resistance R2 and divider resistance R3 are serially connected between the positive pole and negative pole of power supply successively, the public connecting end of divider resistance R2 and divider resistance R3 connects the control end of switching tube 101, and ceramic disc capacitor C1 is connected between the control end and cold end of switching tube 101.
As one embodiment of the invention, switching tube 101 is NPN type triode Q1, the base stage of NPN type triode Q1 is the control end of switching tube 101, and the current collection of NPN type triode Q1 is the hot end of switching tube 101 very, and the emission of NPN type triode Q1 is the cold end of switching tube 101 very.
Fig. 2 shows the circuit structure of the surge current suppression circuit that second embodiment of the invention provides, and for convenience of explanation, only shows the part relevant with the embodiment of the invention, and details are as follows.
As one embodiment of the invention, switching tube 101 is N-type metal-oxide-semiconductor Q2, and the grid of N-type metal-oxide-semiconductor Q2 is the control end of switching tube 101, and the drain electrode of N-type metal-oxide-semiconductor Q2 is the hot end of switching tube 101, and the source electrode of N-type metal-oxide-semiconductor Q2 is the cold end of switching tube 101.
The operation principle of this surge current suppression circuit is:
Work as plugged; the circuit powered on moment; the undertension at ceramic disc capacitor C1 two ends is when reaching the threshold voltage of switching tube 101 control ends; switching tube 101 is in off state, and relay K 1 magnet spool loop is in open circuit, and the switch of relay K 1 disconnects; the electricity consumption load current loop need to form the work loop through resistor R1; the surge current of circuit powered on moment just is suppressed to a less value, has avoided the generation of surge current, thereby can avoid the overcurrent protective device misoperation.
Along with passage of time, the surge current peak value is gone over, circuital current is stable, and ceramic disc capacitor C1 keeps charged state that its both end voltage is raise gradually always, when the voltage at ceramic disc capacitor C1 two ends reaches the threshold voltage of switching tube 101 control ends, switching tube 101 is in conducting state, the switch closure of relay K 1, so that resistor R1 breaks away from operating circuit, current circuit is through the switch formation work loop of relay K 1, and this moment, circuit entered steady-working state, in stable state, because resistor R1 breaks away from operating circuit, so the electrical efficiency of circuit is unaffected.
The embodiment of the invention also provides a kind of light fixture, and Fig. 3 shows the circuit structure of the light fixture that first embodiment of the invention provides, and for convenience of explanation, only shows the part relevant with the embodiment of the invention, and details are as follows.
Light fixture comprises lamp circuit 300, also comprises the surge current suppression circuit 100 that is connected between power supply and the lamp circuit 300, and surge current suppression circuit 100 comprises:
Resistor R1, divider resistance R2, divider resistance R3, relay K 1, switching tube 101 and ceramic disc capacitor C1;
Resistor R1 is connected between the power end of the positive pole of power supply and lamp circuit 300, the switch of relay K 1 is in parallel with resistor R1, the switch of relay K 1 is normal open switch, the first contact of switch and the second holding contact disconnect, the positive pole of the first termination power of the electromagnet of relay K 1, the hot end of the second termination switching tube 101 of the electromagnet of relay K 1, the cold end of switching tube 101 connects the negative pole of power supply and the ground end of lamp circuit 300 simultaneously, divider resistance R2 and divider resistance R3 are serially connected between the positive pole and negative pole of power supply successively, the public connecting end of divider resistance R2 and divider resistance R3 connects the control end of switching tube 101, and ceramic disc capacitor C1 is connected between the control end and cold end of switching tube 101.
As one embodiment of the invention, switching tube 101 is NPN type triode Q1, the base stage of NPN type triode Q1 is the control end of switching tube 101, and the current collection of NPN type triode Q1 is the hot end of switching tube 101 very, and the emission of NPN type triode Q1 is the cold end of switching tube 101 very.
Fig. 4 shows the circuit structure of the light fixture that second embodiment of the invention provides, and for convenience of explanation, only shows the part relevant with the embodiment of the invention, and details are as follows.
As one embodiment of the invention, switching tube 101 is N-type metal-oxide-semiconductor Q2, and the grid of N-type metal-oxide-semiconductor Q2 is the control end of switching tube 101, and the drain electrode of N-type metal-oxide-semiconductor Q2 is the hot end of switching tube 101, and the source electrode of N-type metal-oxide-semiconductor Q2 is the cold end of switching tube 101.
With respect to prior art; surge current suppression circuit of the present invention comprises resistor R1; relay K 1; switching tube and ceramic disc capacitor C1; the circuit powered on moment; the undertension at ceramic disc capacitor C1 two ends is when reaching the threshold voltage of switch controlled end; switching tube is in off state; relay K 1 magnet spool loop is in open circuit; the switch of relay K 1 disconnects; the electricity consumption load current loop need to form the work loop through resistor R1; resistor R1 can eliminate the surge current that powered on moment produces; and the surge current peak value was after the past; when the voltage at ceramic disc capacitor C1 two ends reaches the threshold voltage of switch controlled end; switching tube is in conducting state; the switch closure of relay K 1; so that resistor R1 breaks away from operating circuit, this surge current suppression circuit volume is little; cost is low and can not reduce the electrical efficiency of protected circuit.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. surge current suppression circuit is connected to power supply and with between the electric loading, it is characterized in that, described surge current suppression circuit comprises:
Resistor R1, divider resistance R2, divider resistance R3, relay K 1, switching tube and ceramic disc capacitor C1;
Described resistor R1 is connected between the positive pole and the power end with electric loading of described power supply, the switch of described relay K 1 is in parallel with resistor R1, the switch of described relay K 1 is normal open switch, the first contact of described switch and the second holding contact disconnect, the positive pole of the described power supply of the first termination of the electromagnet of described relay K 1, the hot end of the described switching tube of the second termination of the electromagnet of described relay K 1, the cold end of described switching tube connects the negative pole and the ground end of using electric loading of described power supply simultaneously, described divider resistance R2 and divider resistance R3 are serially connected between the positive pole and negative pole of described power supply successively, the public connecting end of described divider resistance R2 and divider resistance R3 connects the control end of described switching tube, and described ceramic disc capacitor C1 is connected between the control end and cold end of described switching tube.
2. surge current suppression circuit as claimed in claim 1, it is characterized in that, described switching tube is NPN type triode Q1, the base stage of described NPN type triode Q1 is the control end of described switching tube, the hot end of the very described switching tube of current collection of described NPN type triode Q1, the cold end of the very described switching tube of emission of described NPN type triode Q1.
3. surge current suppression circuit as claimed in claim 1, it is characterized in that, described switching tube is N-type metal-oxide-semiconductor Q2, the grid of described N-type metal-oxide-semiconductor Q2 is the control end of described switching tube, the drain electrode of described N-type metal-oxide-semiconductor Q2 is the hot end of described switching tube, and the source electrode of described N-type metal-oxide-semiconductor Q2 is the cold end of described switching tube.
4. a light fixture comprises lamp circuit, also comprises the surge current suppression circuit that is connected between power supply and the lamp circuit, it is characterized in that, described surge current suppression circuit comprises:
Resistor R1, divider resistance R2, divider resistance R3, relay K 1, switching tube and ceramic disc capacitor C1;
Described resistor R1 is connected between the power end of the positive pole of described power supply and lamp circuit, the switch of described relay K 1 is in parallel with resistor R1, the switch of described relay K 1 is normal open switch, the first contact of described switch and the second holding contact disconnect, the positive pole of the described power supply of the first termination of the electromagnet of described relay K 1, the hot end of the described switching tube of the second termination of the electromagnet of described relay K 1, the cold end of described switching tube connects the negative pole of described power supply and the ground end of lamp circuit simultaneously, described divider resistance R2 and divider resistance R3 are serially connected between the positive pole and negative pole of described power supply successively, the public connecting end of described divider resistance R2 and divider resistance R3 connects the control end of described switching tube, and described ceramic disc capacitor C1 is connected between the control end and cold end of described switching tube.
5. light fixture as claimed in claim 4, it is characterized in that, described switching tube is NPN type triode Q1, the base stage of described NPN type triode Q1 is the control end of described switching tube, the hot end of the very described switching tube of current collection of described NPN type triode Q1, the cold end of the very described switching tube of emission of described NPN type triode Q1.
6. light fixture as claimed in claim 4, it is characterized in that, described switching tube is N-type metal-oxide-semiconductor Q2, the grid of described N-type metal-oxide-semiconductor Q2 is the control end of described switching tube, the drain electrode of described N-type metal-oxide-semiconductor Q2 is the hot end of described switching tube, and the source electrode of described N-type metal-oxide-semiconductor Q2 is the cold end of described switching tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110228309.2A CN102931647B (en) | 2011-08-10 | 2011-08-10 | A kind of surge current suppression circuit and light fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110228309.2A CN102931647B (en) | 2011-08-10 | 2011-08-10 | A kind of surge current suppression circuit and light fixture |
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| Publication Number | Publication Date |
|---|---|
| CN102931647A true CN102931647A (en) | 2013-02-13 |
| CN102931647B CN102931647B (en) | 2016-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110228309.2A Active CN102931647B (en) | 2011-08-10 | 2011-08-10 | A kind of surge current suppression circuit and light fixture |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103825263A (en) * | 2012-11-16 | 2014-05-28 | 海洋王（东莞）照明科技有限公司 | Voltage-stabilization-source start protection circuit and power-strip test circuit |
| WO2014190837A1 (en) * | 2013-05-30 | 2014-12-04 | Liao Shunan | Power supply apparatus for low-temperature led lighting |
| CN104640293A (en) * | 2013-11-13 | 2015-05-20 | 深圳市海洋王照明工程有限公司 | Protection circuit |
| CN108964437A (en) * | 2018-06-07 | 2018-12-07 | 广州市普今电子科技有限公司 | A kind of circuit promoting starting capacitance load capability |
| CN109217273A (en) * | 2018-11-20 | 2019-01-15 | 艾乐德电子（南京）有限公司 | One kind turning off the power switch undelayed anti-surge circuit |
| CN109755926A (en) * | 2019-03-22 | 2019-05-14 | 常州市赛尔交通器材有限公司 | Impulse current protection device for combined power supply system of high-speed train switchboard and headlamp |
| CN112865050A (en) * | 2019-11-27 | 2021-05-28 | 明纬(广州)电子有限公司 | Adaptive regulation surge current limiter |
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| JP2008125339A (en) * | 2006-10-17 | 2008-05-29 | Kanazawa Inst Of Technology | Inrush current prevention circuit, load drive circuit, and light emitting device using them |
| CN101871580A (en) * | 2009-04-23 | 2010-10-27 | 苏州市昆士莱照明科技有限公司 | Light-operated LED (liquid crystal diode) lamp |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103825263A (en) * | 2012-11-16 | 2014-05-28 | 海洋王（东莞）照明科技有限公司 | Voltage-stabilization-source start protection circuit and power-strip test circuit |
| CN103825263B (en) * | 2012-11-16 | 2018-10-12 | 海洋王（东莞）照明科技有限公司 | Source of stable pressure starting protection circuit and power panel test circuit |
| WO2014190837A1 (en) * | 2013-05-30 | 2014-12-04 | Liao Shunan | Power supply apparatus for low-temperature led lighting |
| CN104640293A (en) * | 2013-11-13 | 2015-05-20 | 深圳市海洋王照明工程有限公司 | Protection circuit |
| CN108964437A (en) * | 2018-06-07 | 2018-12-07 | 广州市普今电子科技有限公司 | A kind of circuit promoting starting capacitance load capability |
| CN109217273A (en) * | 2018-11-20 | 2019-01-15 | 艾乐德电子（南京）有限公司 | One kind turning off the power switch undelayed anti-surge circuit |
| CN109755926A (en) * | 2019-03-22 | 2019-05-14 | 常州市赛尔交通器材有限公司 | Impulse current protection device for combined power supply system of high-speed train switchboard and headlamp |
| CN112865050A (en) * | 2019-11-27 | 2021-05-28 | 明纬(广州)电子有限公司 | Adaptive regulation surge current limiter |
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| CN102931647B (en) | 2016-03-02 |
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