CN103135000B - Testing circuit of temperature protector and testing device with same - Google Patents
Testing circuit of temperature protector and testing device with same Download PDFInfo
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- CN103135000B CN103135000B CN201110373279.4A CN201110373279A CN103135000B CN 103135000 B CN103135000 B CN 103135000B CN 201110373279 A CN201110373279 A CN 201110373279A CN 103135000 B CN103135000 B CN 103135000B
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Abstract
The invention provides a testing circuit of a temperature protector and a testing device with the same. The testing circuit comprises at least one temperature protector testing branch circuit and a sound alarm circuit, each temperature protector testing branch circuit comprises a workpiece testing position, an indicating lamp circuit and a switch circuit, two ends of the workpiece testing positions are electrically connected with a temperature protector to be tested, one ends of the workpiece testing positions are electrically connected with a anode of the input end of a power supply, the other ends of the workpiece testing positions are respectively and electrically connected with the input ends of the indicating lamp circuits and the switch circuits, and the sound alarm circuit is respectively and electrically connected with the output ends of the switch circuits of the temperature protector testing circuits and further electrically connected with a cathode of the input end of the power supply. The testing circuit of the temperature protector is simple in structure, high in testing accuracy and low in experimenter working strength.
Description
Technical field
The present invention relates to the test circuit of light fixture part, particularly relate to a kind of test circuit of temperature protector.
Background technology
Gas-discharge lamp is as the leading lighting source in illuminating industry, and its supporting electrical equipment has Inductive ballast, electric capacity, trigger etc.Inductive ballast, as core electric component, need provide a stable working current to light source for a long time.Because the environment for use of light fixture is severe, add long-term work, so the frequent fault of ballast resistor can be caused.In order to lengthen the time in serviceable life of ballast resistor; increase by a temperature protector in ballast resistor inside; automatically disconnect when ballast resistor occurs that abnormal temperature acquires a certain degree; quit work to protect ballast resistor; when temperature return is powered to light fixture again to automatically closed during normal temperature; so greatly lengthen the time in serviceable life of ballast resistor, also reduce maintenance work accordingly.
The protection value scope of temperature protector is key point, because the protection value of temperature protector is on the low side or higher, all has a certain impact to the actual use of light fixture, does not play corresponding action and reaction.Temperature protector test was be placed in high-temperature cabinet by ballast resistor in the past, and outer and LED connects to high-temperature cabinet to draw two lines, inputs corresponding supply voltage and lights LED, determined the actual temp protection value of temperature protector by the light on and off of the observation LED that heats.In process of the test, experimenter needs the light on and off situation of constantly observing LED, determines whether it protects, and causes the corresponding increasing of experimenter's workload, does not especially warn when workload is busy to be easy to forget and to affect test result.So, the poor operability of this test method, time-consuming, affect test mass.
Summary of the invention
The technical problem to be solved in the present invention is the deficiency overcoming the existence of above-mentioned prior art; and propose a kind of test circuit of temperature protector and there is the proving installation of this test circuit; the circuit structure of this test circuit is simple, and test accuracy is high, and the working strength of experimenter is low.
For solving the problems of the technologies described above, the present invention proposes a kind of test circuit of temperature protector, it comprises: at least one temperature protector test branch road and an audible alarm circuit, and each temperature protector test branch road comprises a workpiece test bit, an indicator light circuit and an on-off circuit; The two ends of workpiece test bit are electrically connected a temperature protector to be tested, one end of workpiece test bit is electrically connected with power input positive pole, the other end of workpiece test bit is electrically connected with indicator light circuit and on-off circuit respectively, the on-off circuit that described audible alarm circuit tests branch road with each temperature protector is respectively electrically connected, and described audible alarm circuit is also connected with power input negative electricity; Described indicator light circuit is corresponding bright light or turn off the light according to the conducting of the temperature protector in coupled workpiece test bit or shutoff; described on-off circuit is corresponding disconnection or closed according to the conducting of the temperature protector in coupled workpiece test bit or shutoff, and described audible alarm circuit is sounding alarm according to the closed of the on-off circuit of any one temperature protector test branch road.
Preferably, described indicator light circuit comprises: a LED light of series connection and a resistance, and the anode of described LED light is electrically connected with workpiece test bit, and the negative electrode of described LED light is by described resistance eutral grounding.
Preferably, described on-off circuit comprises a relay, the coil two ends of relay are connected in indicator light circuit two ends respectively in parallel, and the common of relay is electrically connected with power input positive pole, and normally closed contact is electrically connected with the input end of described audible alarm circuit.
Preferably, the common of described relay is electrically connected with the positive pole of power input through a hand switch.
Preferably, described on-off circuit also comprises a diode, and this diodes in parallel is connected to the coil two ends of relay, and the plus earth of diode.
Preferably, described audible alarm circuit comprises: the hummer be connected in series and a current-limiting resistance; The output terminal that the input end of hummer tests the on-off circuit of branch road with each temperature protector is respectively electrically connected, and the output terminal of hummer is connected with power input negative electricity through current-limiting resistance.
For solving the problems of the technologies described above, the present invention also proposes a kind of proving installation of temperature protector, and it comprises the test circuit of said temperature protector.
Compared with prior art; the present invention has following beneficial effect: the circuit of temperature protector test circuit of the present invention is simple, reliable; by the break-make of temperature protector; carry out the on/off of pilot relay; by the adhesive of relay, release controls hummer alarm free; thus certain temperature protector sample of realization warning laboratory technician is protected; avoid experimenter to need constantly to observe LED light on and off to judge the trouble whether temperature protector is protected; improve the accuracy of temperature protector test, also reduce the working strength of testing crew.
Accompanying drawing explanation
Fig. 1 is the circuit theory schematic diagram of the test circuit of temperature protector of the present invention.
Embodiment
In order to further illustrate principle of the present invention and structure, existing by reference to the accompanying drawings to a preferred embodiment of the present invention will be described in detail.
Consult Fig. 1, the test circuit of the temperature protector of the present embodiment comprises: three temperature protector test branch roads, 100,200,300 and audible alarm circuit 400.Each temperature protector test branch road 100,200,300 can test a temperature protector, makes this test circuit can test three temperature protectors simultaneously..
Each temperature protector test branch road 100,200,300 structure is identical, describes its particular circuit configurations in detail below for temperature protector test branch road 100.Temperature protector test branch road 100 comprises: workpiece test bit T1, an indicator light circuit 101 and an on-off circuit 102.The two ends of workpiece test bit T1 are electrically connected a temperature protector to be tested, and the first end of workpiece test bit T1 is electrically connected with power input positive pole, and the second end is electrically connected with the output terminal of indicator light circuit 101 and on-off circuit 102 respectively.Indicator light circuit 101 comprises: the anode of the LED light L1 be connected in series and a resistance R1, LED light L1 is electrically connected with second end of workpiece test bit T1, and negative electrode is by resistance R1 ground connection.On-off circuit 102 comprises a relay J 1, the coil two ends of relay J 1 are connected in parallel on the two ends of indicator light circuit 101 respectively, the common of relay J 1 is electrically connected with the positive pole Vcc of power input through a ship type K switch 1, and the normally closed contact of relay J 1 is electrically connected with audible alarm circuit 300.Ship type K switch 1 effect is in the circuit; when preventing temperature protector workpiece test bit T1 not having connecting test; the normally closed contact conducting of on-off circuit 102; cause audible alarm circuit 300 upper electric alarm by mistake; in other embodiments, ship type K switch 1 also can be pushed the similar hand switch such as switch, toggle switch substitute.Two coil-end of relay J 1 are also parallel with a diode D1; the plus earth of each diode D1; when relay J 1 disconnects; its coil produces an induced electromotive force; diode D1 now in parallel can form continuous current circuit with this induced electromotive force; the energy that coil is produced discharges, and the high voltage produced when protective relay J1 coil is not disconnected damages.
Audible alarm circuit 400 comprises: the hummer H be connected in series an and current-limiting resistance R4.The input end of hummer H tests the on-off circuit of branch road 100,200,300 respectively output terminal with each temperature protector is electrically connected, and the output terminal of hummer H is through current-limiting resistance R4 ground connection.In the present embodiment, the output terminal of the on-off circuit of each temperature protector test branch road 100,200,300 is the normally closed contact end of each relay J I, J2 or J3.
The circuit theory of this test circuit is as follows: when normally working, and has the ship type K switch 1 on each test branch road of temperature protector, K2 or K3 closes; When the temperature protector to be detected in certain workpiece test bit is not protected, input supply voltage lights coupled LED light L1, L2 or L3 by this temperature protector, simultaneously, the relay J 1 be connected with this workpiece test bit, the coil two ends of J2 or J3 obtain electric, normally opened contact adhesive, audible alarm circuit 400 cannot obtain electric from power input positive pole Vcc through the normally closed contact of this relay, and hummer H does not work, and is in not alarm condition; When the temperature protector to be detected in certain workpiece test bit is in guard mode; the LED light J1 be then connected with this workpiece test bit, J2 or J3 dead electricity are extinguished; simultaneously; the relay J 1 be connected with this workpiece test bit, J2 or J3 discharge; normally closed contact adhesive; audible alarm circuit 400 obtains electric through the normally closed contact of this relay from power input positive pole Vcc, and hummer H reports to the police, warning testing crew record this be in the temperature protection value of the temperature protector of guard mode.
When practical application, the quantity of temperature protector on the test circuit of this temperature protector test branch road does not limit, can relative set as required, and the circuit arrangement of each temperature protector test branch road is same as the previously described embodiments, repeats no more herein.
In addition, the present invention also provides a kind of proving installation of temperature protector, and this proving installation is provided with above-mentioned test circuit, and this proving installation is the supporting high-temperature cabinet had in order to heat up to temperature protector also.
The test procedure of the proving installation of this temperature protector is as follows: first; test specimen (temperature protector to be detected) is inserted high-temperature cabinet; and its two ends are respectively connected a wire and lead to outside high-temperature cabinet; be connected with the workpiece test bit of test circuit; then external direct current 5V supply voltage; after energising, LED light is bright; show that corresponding test specimen is in normal condition; continuing heating by incubator makes test specimen protection disconnect; LED light does not work; hummer H reports to the police, thus warning laboratory technician records the protection value of test specimen.When carrying out multiple specimen test; ship type K switch 1 on respective sample loop, K2 or K3 are closed; the numbering of sample is numbered corresponding with the LED light of test circuit; after hearing chimes of doom, on observation test circuit, that LED light does not work, i.e. the test specimen protection of corresponding numbering; record the temperature value of now incubator; the i.e. temperature protection value of test specimen, disconnects corresponding ship type K switch 1, K2 or K3, hummer H stop alarm.
In sum; the test circuit circuit design of temperature protector of the present invention is simple, reliable; by the break-make of temperature protector; carry out the on/off of pilot relay; by the adhesive of relay, release controls hummer alarm free, thus realizes certain temperature protector sample of warning laboratory technician and protect, and avoids the trouble that experimenter needs constantly to observe LED light on and off; improve the accuracy of temperature protector test, also reduce the working strength of testing crew.
These are only better possible embodiments of the present invention, not limit the scope of the invention.All utilizations instructions of the present invention and the change of the equivalent structure done by accompanying drawing content, be all included in protection scope of the present invention.
Claims (7)
1. the test circuit of a temperature protector, it is characterized in that, comprise: at least one temperature protector test branch road and an audible alarm circuit, each temperature protector test branch road comprises a workpiece test bit, an indicator light circuit and an on-off circuit; The two ends of workpiece test bit are electrically connected a temperature protector to be tested, one end of workpiece test bit is electrically connected with power input positive pole, the other end of workpiece test bit is electrically connected with indicator light circuit and on-off circuit respectively, the on-off circuit that described audible alarm circuit tests branch road with each temperature protector is respectively electrically connected, and described audible alarm circuit is also connected with power input negative electricity;
Described indicator light circuit is corresponding bright light or turn off the light according to the conducting of the temperature protector in coupled workpiece test bit or shutoff; described on-off circuit is corresponding disconnection or closed according to the conducting of the temperature protector in coupled workpiece test bit or shutoff, and described audible alarm circuit is sounding alarm according to the closed of the on-off circuit of any one temperature protector test branch road.
2. the test circuit of temperature protector as claimed in claim 1; it is characterized in that; described indicator light circuit comprises: a LED light of series connection and a resistance, and the anode of described LED light is electrically connected with workpiece test bit, and the negative electrode of described LED light is by described resistance eutral grounding.
3. the test circuit of temperature protector as claimed in claim 1; it is characterized in that; described on-off circuit comprises a relay; the coil two ends of relay are connected in indicator light circuit two ends respectively in parallel; the common of relay is electrically connected with power input positive pole, and normally closed contact is electrically connected with the input end of described audible alarm circuit.
4. the test circuit of temperature protector as claimed in claim 3, it is characterized in that, the common of described relay is electrically connected with the positive pole of power input through a hand switch.
5. the test circuit of temperature protector as claimed in claim 3, it is characterized in that, described on-off circuit also comprises a diode, and this diodes in parallel is connected to the coil two ends of relay, and the plus earth of diode.
6. the test circuit of temperature protector as claimed in claim 1, it is characterized in that, described audible alarm circuit comprises: the hummer be connected in series and a current-limiting resistance; The output terminal that the input end of hummer tests the on-off circuit of branch road with each temperature protector is respectively electrically connected, and the output terminal of hummer is connected with power input negative electricity through current-limiting resistance.
7. a proving installation for temperature protector, is characterized in that, this proving installation comprises test circuit according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110373279.4A CN103135000B (en) | 2011-11-22 | 2011-11-22 | Testing circuit of temperature protector and testing device with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110373279.4A CN103135000B (en) | 2011-11-22 | 2011-11-22 | Testing circuit of temperature protector and testing device with same |
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| Publication Number | Publication Date |
|---|---|
| CN103135000A CN103135000A (en) | 2013-06-05 |
| CN103135000B true CN103135000B (en) | 2015-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110373279.4A Active CN103135000B (en) | 2011-11-22 | 2011-11-22 | Testing circuit of temperature protector and testing device with same |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104391532B (en) * | 2014-11-07 | 2017-02-01 | 苏州瑞延电子科技有限公司 | Automobile electric window switch temperature and humidity test control circuit |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2475209Y (en) * | 2001-04-14 | 2002-01-30 | 郭经顺 | Intelligent safety auto-controlled circuit breaker |
| CN2826643Y (en) * | 2005-07-29 | 2006-10-11 | 区志杨 | Ballast |
| CN201852907U (en) * | 2010-10-20 | 2011-06-01 | 常州创能电子有限公司 | Efficiency test device of high-frequency electrodeless lamp electronic ballast |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003056884A1 (en) * | 2001-12-21 | 2003-07-10 | Koninklijke Philips Electronics N.V. | Electronic ballast with rail voltage switching |
| US6982528B2 (en) * | 2003-11-12 | 2006-01-03 | Lutron Electronics Co., Inc. | Thermal protection for lamp ballasts |
-
2011
- 2011-11-22 CN CN201110373279.4A patent/CN103135000B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2475209Y (en) * | 2001-04-14 | 2002-01-30 | 郭经顺 | Intelligent safety auto-controlled circuit breaker |
| CN2826643Y (en) * | 2005-07-29 | 2006-10-11 | 区志杨 | Ballast |
| CN201852907U (en) * | 2010-10-20 | 2011-06-01 | 常州创能电子有限公司 | Efficiency test device of high-frequency electrodeless lamp electronic ballast |
Non-Patent Citations (1)
| Title |
|---|
| 荧光灯镇流器发热特性的试验研究;石亮等;《智能建筑电气技术》;20091220;第3卷(第6期);第55-57页 * |
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| CN103135000A (en) | 2013-06-05 |
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