CN104808101B - A kind of detection circuit for voice-frequency cable - Google Patents
A kind of detection circuit for voice-frequency cable Download PDFInfo
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- CN104808101B CN104808101B CN201510208568.7A CN201510208568A CN104808101B CN 104808101 B CN104808101 B CN 104808101B CN 201510208568 A CN201510208568 A CN 201510208568A CN 104808101 B CN104808101 B CN 104808101B
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Abstract
The invention discloses a kind of detection circuit for voice-frequency cable, including battery pack, current-limiting resistance, first voltage-regulator diode, second voltage-regulator diode, triode, first light emitting diode, second light emitting diode, 3rd light emitting diode, first plug and the second plug, voice-frequency cable to be tested is plugged between the first plug and the second plug, under normal condition, first light emitting diode, second light emitting diode, 3rd light emitting diode is by voice-frequency cable iron core to be tested, radome branch, if iron core or radome open circuit short cut with each other, the state of light emitting diode will change, expression voice-frequency cable break-make or short circuit so as to intuitive display.The detection circuit for voice-frequency cable of the present invention, it is easy to use by the expression voice-frequency cable break-make for lighting or extinguishing intuitive display of light emitting diode or short circuit, securely and reliably, have a good application prospect.
Description
Technical field
The present invention relates to a kind of detection circuit for voice-frequency cable, belong to electronic circuit technology field.
Background technology
At present, the detection of voice-frequency cable break-make or short circuit is tested using traditional universal meter, in-convenience in use, and
And accuracy is not high, testing staff is not easy intuitively to obtain the state of voice-frequency cable.
The content of the invention
The invention aims to overcome the detection of existing voice-frequency cable break-make or short circuit to use traditional universal meter
Tested, in-convenience in use, the problem of accuracy is not high.The detection circuit for voice-frequency cable of the present invention, by luminous
The expression voice-frequency cable break-make for lighting or extinguishing intuitive display of diode or short circuit, it is easy to use, securely and reliably, have good
Good application prospect.
In order to achieve the above object, the technical solution adopted in the present invention is：
A kind of detection circuit for voice-frequency cable, it is characterised in that：Including battery pack G1, current-limiting resistance R1, first steady
Press diode VD1, the second voltage-regulator diode VD2, triode Q1, the first light emitting diode D1, the second light emitting diode D2, the 3rd
Light emitting diode D3, the first plug XS1 and the second plug XS2, the positive pole of the battery pack G1 pass through current-limiting resistance R1 and first
Voltage-regulator diode VD1 positive pole is connected, and the negative pole and the second voltage-regulator diode VD2 of the first voltage-regulator diode VD1 are just
Pole is connected, and the negative pole of the second voltage-regulator diode VD2 is connected with battery pack G1 negative pole, first voltage-regulator diode
VD1 positive pole is also connected by resistance R2 with triode Q1 base stage, the emitter stage of the triode Q1 by resistance R3 with
Battery pack G1 negative pole is connected, and the colelctor electrode of the triode Q1 is connected with the 3rd light emitting diode D3 negative pole, described
3rd light emitting diode D3 negative pole is connected with the first plug XS1 A ends, the positive pole of the 3rd light emitting diode D3 and
Two plug XS2 A ends are connected, the positive pole of the first light emitting diode D1 positive pole with battery pack G1, the first plug respectively
XS1 B ends are connected, and the negative pole of the first light emitting diode D1 is connected with the second light emitting diode D2 positive pole, described
Second light emitting diode D2 positive pole is connected with the second plug XS2 B, the negative pole and second of the second light emitting diode D2
Plug XS2 A ends are connected, and voice-frequency cable to be tested is plugged between the first plug XS1 and the second plug XS2.
A kind of foregoing detection circuit for voice-frequency cable, it is characterised in that：The positive pole of the battery pack G1 is also connected
There is switch SB.
A kind of foregoing detection circuit for voice-frequency cable, it is characterised in that：The output voltage of the battery pack G1 is
9V。
A kind of foregoing detection circuit for voice-frequency cable, it is characterised in that：The triode Q1 is NPN triode.
A kind of foregoing detection circuit for voice-frequency cable, it is characterised in that：The positive pole of the battery pack G1 is also connected
There is power supply instruction light emitting diode D4.
A kind of foregoing detection circuit for voice-frequency cable, it is characterised in that：The resistance of the resistance R1 is 10k Ω.
The beneficial effects of the invention are as follows：The detection circuit for voice-frequency cable of the present invention, passes through the bright of light emitting diode
Expression voice-frequency cable break-make or the short circuit of intuitive display are played or extinguish, it is easy to use, securely and reliably, before there is good application
Scape.
Brief description of the drawings
Fig. 1 is the circuit diagram of the detection circuit for being used for voice-frequency cable of the present invention.
Embodiment
Below in conjunction with Figure of description, the present invention will be further described.Following examples are only used for clearly
Illustrate technical scheme, and can not be limited the scope of the invention with this.
As shown in figure 1, a kind of detection circuit for voice-frequency cable, including battery pack G1, current-limiting resistance R1, the first voltage stabilizing
Diode VD1, the second voltage-regulator diode VD2, triode Q1, the first light emitting diode D1, the second light emitting diode D2, the 3rd hair
Optical diode D3, the first plug XS1 and the second plug XS2, the battery pack G1 positive pole are steady by current-limiting resistance R1 and first
Pressure diode VD1 positive pole is connected, the negative pole of the first voltage-regulator diode VD1 and the second voltage-regulator diode VD2 positive pole
It is connected, the negative pole of the second voltage-regulator diode VD2 is connected with battery pack G1 negative pole, first voltage-regulator diode
VD1 positive pole is also connected by resistance R2 with triode Q1 base stage, the emitter stage of the triode Q1 by resistance R3 with
Battery pack G1 negative pole is connected, and the colelctor electrode of the triode Q1 is connected with the 3rd light emitting diode D3 negative pole, described
3rd light emitting diode D3 negative pole is connected with the first plug XS1 A ends, the positive pole of the 3rd light emitting diode D3 and
Two plug XS2 A ends are connected, the positive pole of the first light emitting diode D1 positive pole with battery pack G1, the first plug respectively
XS1 B ends are connected, and the negative pole of the first light emitting diode D1 is connected with the second light emitting diode D2 positive pole, described
Second light emitting diode D2 positive pole is connected with the second plug XS2 B, the negative pole and second of the second light emitting diode D2
Plug XS2 A ends are connected, and voice-frequency cable to be tested is plugged between the first plug XS1 and the second plug XS2.
The positive pole of the battery pack G1 is also in series with switch SB, and battery pack G1 output voltage is 9V, and triode Q1 is NPN
Triode, the resistance that battery pack G1 positive pole is also in series with power supply instruction light emitting diode D4, resistance R1 is 10k Ω.
The detection circuit for voice-frequency cable of the present invention, as shown in figure 1, under normal condition, D1 and D3 are by be tested
Iron core or radome branch in voice-frequency cable, D1 and D3 electric current flow through D2, make D2 normal luminous, if iron core or radome are opened
Road or when short cut with each other,
The luminous of light emitting diode will change, table 1 specific as follows,
The relation table of the light emitting diode of table 1 and voice-frequency cable
In summary, the detection circuit for voice-frequency cable of the invention, lighting or extinguish aobvious by light emitting diode
Show and intuitively represent voice-frequency cable break-make or short circuit, it is easy to use, securely and reliably, have a good application prospect.
General principle, the main features and advantages of the present invention have been shown and described above.The technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, the original for simply illustrating the present invention described in above-described embodiment and specification
Reason, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes and improvements
It all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its equivalent circle
It is fixed.
Claims (4)
- A kind of 1. detection circuit for voice-frequency cable, it is characterised in that：Including battery pack G1, current-limiting resistance R1, the first voltage stabilizing Diode VD1, the second voltage-regulator diode VD2, triode Q1, the first light emitting diode D1, the second light emitting diode D2, the 3rd hair Optical diode D3, the first plug XS1 and the second plug XS2, the battery pack G1 positive pole are steady by current-limiting resistance R1 and first Pressure diode VD1 positive pole is connected, the negative pole of the first voltage-regulator diode VD1 and the second voltage-regulator diode VD2 positive pole It is connected, the negative pole of the second voltage-regulator diode VD2 is connected with battery pack G1 negative pole, first voltage-regulator diode VD1 positive pole is also connected by resistance R2 with triode Q1 base stage, the emitter stage of the triode Q1 by resistance R3 with Battery pack G1 negative pole is connected, and the colelctor electrode of the triode Q1 is connected with the second light emitting diode D2 negative pole, described Second light emitting diode D2 negative pole is connected with the first plug XS1 A ends, the positive pole of the 3rd light emitting diode D3 and Two plug XS2 B ends are connected, the positive pole of the first light emitting diode D1 positive pole with battery pack G1, the first plug respectively XS1 B ends are connected, and the negative pole of the first light emitting diode D1 is connected with the 3rd light emitting diode D3 positive pole, described 3rd light emitting diode D3 positive pole is connected with the second plug XS2 B ends, the negative pole of the second light emitting diode D2 and One plug XS1 A ends are connected, and voice-frequency cable to be tested is plugged between the first plug XS1 and the second plug XS2, described Battery pack G1 positive pole is also in series with switch SB, and the output voltage of the battery pack G1 is 9V.
- A kind of 2. detection circuit for voice-frequency cable according to claim 1, it is characterised in that：The triode Q1 is NPN triode.
- A kind of 3. detection circuit for voice-frequency cable according to claim 1, it is characterised in that：The battery pack G1's Positive pole is also in series with power supply instruction light emitting diode D4.
- A kind of 4. detection circuit for voice-frequency cable according to claim 1, it is characterised in that：The resistance of the resistance R1 It is worth for 10k Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510208568.7A CN104808101B (en) | 2015-04-29 | 2015-04-29 | A kind of detection circuit for voice-frequency cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510208568.7A CN104808101B (en) | 2015-04-29 | 2015-04-29 | A kind of detection circuit for voice-frequency cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104808101A CN104808101A (en) | 2015-07-29 |
| CN104808101B true CN104808101B (en) | 2017-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510208568.7A Active CN104808101B (en) | 2015-04-29 | 2015-04-29 | A kind of detection circuit for voice-frequency cable |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114859267B (en) * | 2022-07-06 | 2022-10-28 | 广东科伺智能科技有限公司 | Circuit on-off detection circuit |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87203672U (en) * | 1987-03-17 | 1987-12-26 | 苏锡麟 | Pocket-size ac circuit measuring meter |
| CN200956048Y (en) * | 2006-09-20 | 2007-10-03 | 上海益而益电器制造有限公司 | Leakage detecting aircuit |
| CN201352247Y (en) * | 2009-01-18 | 2009-11-25 | 衡阳风顺车桥有限公司 | Lead wire breakpoint quick surveymeter |
| EP2159868A1 (en) * | 2007-06-11 | 2010-03-03 | Panasonic Corporation | In-cell shortcircuit detection device and method and cell pack |
| CN101833066A (en) * | 2010-05-20 | 2010-09-15 | 刘昭利 | Working state indicator of circuit breaker |
| EP2787793A1 (en) * | 2011-11-28 | 2014-10-08 | Konica Minolta, Inc. | Illumination device and light-emission module |
| CN204613341U (en) * | 2015-04-29 | 2015-09-02 | 苏州华徕光电仪器有限公司 | A kind of testing circuit for voice-frequency cable |
-
2015
- 2015-04-29 CN CN201510208568.7A patent/CN104808101B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87203672U (en) * | 1987-03-17 | 1987-12-26 | 苏锡麟 | Pocket-size ac circuit measuring meter |
| CN200956048Y (en) * | 2006-09-20 | 2007-10-03 | 上海益而益电器制造有限公司 | Leakage detecting aircuit |
| EP2159868A1 (en) * | 2007-06-11 | 2010-03-03 | Panasonic Corporation | In-cell shortcircuit detection device and method and cell pack |
| CN201352247Y (en) * | 2009-01-18 | 2009-11-25 | 衡阳风顺车桥有限公司 | Lead wire breakpoint quick surveymeter |
| CN101833066A (en) * | 2010-05-20 | 2010-09-15 | 刘昭利 | Working state indicator of circuit breaker |
| EP2787793A1 (en) * | 2011-11-28 | 2014-10-08 | Konica Minolta, Inc. | Illumination device and light-emission module |
| CN204613341U (en) * | 2015-04-29 | 2015-09-02 | 苏州华徕光电仪器有限公司 | A kind of testing circuit for voice-frequency cable |
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|---|---|
| CN104808101A (en) | 2015-07-29 |
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Effective date of registration: 20180903 Address after: 226300 8 Hing five Avenue, five town, Tongzhou District, Nantong, Jiangsu Patentee after: Nantong Meelain Electric Appliance Co., Ltd. Address before: 215153 new street of Tongan town, Suzhou high tech Zone, Jiangsu Province Patentee before: Suzhou Hua Lai photoelectric instrument Co., Ltd |
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