CN204228875U - Path break circuit fast detector - Google Patents
Path break circuit fast detector Download PDFInfo
- Publication number
- CN204228875U CN204228875U CN201420645088.8U CN201420645088U CN204228875U CN 204228875 U CN204228875 U CN 204228875U CN 201420645088 U CN201420645088 U CN 201420645088U CN 204228875 U CN204228875 U CN 204228875U
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- circuit
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- time base
- pin
- detection probe
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Abstract
The utility model discloses a kind of path break circuit fast detector, its feature comprises: 6V direct supply, testing circuit and Schmitt trigger circuit, acousto-optic indicating circuit; Described testing circuit and Schmitt trigger circuit are made up of detection probe TX1 and detection probe TX2, resistance R1 and resistance R2, time base circuit IC1, anti-interference capacitor C1, and the model that time base circuit IC1 selects is NE555; Described acousto-optic indicating circuit is made up of green LED LED1 and dropping resistor R3, red light emitting diodes LED2 and dropping resistor R4, hummer HA.Professional cable disconnection fault test position fix instrument exist price high, in the career field such as maintaining cables and electrician the not easily problem such as universal, the utility model can make up these defects, it can also be installed at electronic equipment, debug and in maintenance process, the break-make situation of checking circuit, it is that a kind of easy to use, testing result is reliable and be easy to universal utility.
Description
Technical field
The utility model belongs to electronics and field of measuring technique, relates to a kind of path break circuit fast detector.
Background technology
On market, DX-A molded line cable disconnection fault test position fix instrument is the special a kind of instrument searched cable disconnection fault and develop for cables manufacturing factory, unit in charge of construction and electric wire applying unit.This instrument develops to form on the empirical basis that summary absorbs the measurement of all kinds of Method of Cable Trouble Point, reparation.DX-A molded line cable disconnection fault test position fix instrument is made up of the range observation of digitizing breakpoint, breakpoint fine positioning signal source, breakpoint fine positioning detector three part.The features such as this instrument has breakpoint range observation, breakpoint fine positioning signal source breakpoint fine positioning detector, full digital display, level of integrated system is high, volume is little, lightweight, easy to carry.Even without practical experience librarian use it can find breakpoint place like clockwork equally.
But professional cable disconnection fault test position fix instrument have price high, in the career field such as maintaining cables and electrician the not easily problem such as universal, path break circuit fast detector described in the utility model can make up and overcome these defects, it can also be installed at electronic equipment, debug and in maintenance process, the break-make situation of checking circuit, it is that a kind of price is low, easy to use, testing result reliable, is easy to universal utility, is suitable for factory's batch exploitation.
Below describe the core technology content that path break circuit fast detector described in the utility model is involved in implementation process in detail.
Utility model content
Goal of the invention and beneficial effect: professional cable disconnection fault test position fix instrument have price high, in the career field such as maintaining cables and electrician the not easily problem such as universal, path break circuit fast detector described in the utility model can make up and overcome these defects, it can also be installed at electronic equipment, debug and in maintenance process, the break-make situation of checking circuit, it is that a kind of price is low, easy to use, testing result reliable, is easy to universal utility, is suitable for factory's batch exploitation.
Circuit working principle: path break circuit fast detector is that used time base IC circuit 1 is connected into Schmidt trigger.Before the use, detection probe TX1 and detection probe TX2 is in open-circuit condition, at this moment the 2nd pin of time base circuit IC1 and the 6th pin are high level, 3rd pin of time base circuit IC1 and the equal output low level of the 7th pin, therefore green LED LED1 and red light emitting diodes LED2 is all not luminous, hummer HA also not sounding.
Therefore, when detection probe TX1 and detection probe TX2 accesses circuit-under-test two ends, if LED 2 luminescence represents that between circuit-under-test two ends be path, otherwise green LED LED1 is luminous.
Generally, equivalent resistance≤20 Ω of circuit-under-test point-to-point transmission is considered as path.When detection probe TX1 and detection probe TX2 contact circuit-under-test 2 respectively, if 2 resistance > 20 Ω, then the 2nd pin of time base circuit IC1 and the 6th pin voltage are greater than supply voltage 1/3, therefore time base circuit IC1 output state is constant, two lumination of light emitting diode states also remain unchanged; If 2 resistance≤20 Ω, then the 2nd pin of time base circuit IC1 and the 6th pin voltage are just less than 1/3 of supply voltage, therefore the 3rd pin output switching activity of time base circuit IC1 becomes high level, make red light emitting diodes LED2 luminescence instruction, simultaneously hummer HA also sounds a buzzer prompting, at this moment the 7th pin inside open circuit of time base circuit IC1, makes green LED LED1 end not luminous.
Technical characteristic: path break circuit fast detector, it comprises 6V direct supply, testing circuit and Schmitt trigger circuit, acousto-optic indicating circuit, it is characterized in that:
Testing circuit and Schmitt trigger circuit: it is by detection probe TX1 and detection probe TX2, resistance R1 and resistance R2, time base circuit IC1, anti-interference capacitor C1 forms, the model that time base circuit IC1 selects is NE555, time base circuit IC1 the 2nd pin and the 6th pin connecting resistance R1 one end and resistance R2 one end, another termination of resistance R2 detection probe TX1, resistance R1 other end connection circuit positive pole VCC, time base circuit IC1 the 4th pin and the 8th pin connection circuit positive pole VCC, time base circuit IC1 the 5th pin connects anti-interference capacitor C1 one end, the 1st pin connection circuit ground GND of the anti-interference capacitor C1 other end and time base circuit IC1,
Acousto-optic indicating circuit: it is made up of green LED LED1 and dropping resistor R3, red light emitting diodes LED2 and dropping resistor R4, hummer HA, time base circuit IC1 the 7th pin connects the negative pole of green LED LED1 by resistance R3, the positive pole connection circuit positive pole VCC of green LED LED1, the positive pole of time base circuit IC1 the 3rd pin connecting resistance R4 one end and hummer HA, the positive pole of another termination red light emitting diodes of resistance R4 LED2, the negative pole of hummer HA and the negative pole connection circuit ground GND of red light emitting diodes LED2;
The positive pole of 6V direct supply is connected with circuit anode VCC, the negative pole connection circuit ground GND and detection probe TX2 of 6V direct supply.
Accompanying drawing explanation
Accompanying drawing 1 is path break circuit fast detector embodiment circuit working schematic diagram that the utility model provides.
Embodiment
According to the path break circuit fast detector circuit working schematic diagram shown in accompanying drawing 1 and accompanying drawing explanation, and according to annexation between components and parts in each several part circuit described in utility model content, and components and parts technical parameter described in embodiment requires and circuit production main points are carried out enforcement and can be realized the utility model, is further described correlation technique of the present utility model below in conjunction with embodiment.
The technical parameter of components and parts and selection requirement
IC1 is time base circuit, and the model selected is NE555 or selects KA555; Time base circuit IC1 is that 8 pin dual inline type DIP encapsulate, each pin function respectively: the 1st pin be circuit ground GND; 2nd pin is trigger end; 3rd pin output terminal; 4th pin preset end; 5th pin is control voltage; 6th pin thresholding (threshold value); 7th pin is discharge end; 8th pin connection circuit positive pole VCC;
Resistance all selects the carbon resister of 1/8W, and the resistance of resistance R1 is 1K Ω; The resistance of resistance R2 is 510 Ω; The resistance of resistance R3 is 470 Ω; The resistance of resistance R4 is 470 Ω;
C1 is anti-interference capacitor, and its capacity is 0.01 μ F;
LED1 is green LED, LED2 is red light emitting diodes, adopts the common green LED of ￠ 5mm and common red light emitting diodes respectively;
HA is hummer, selects hummer to be built-in with sound signal circuit for generating, and operating voltage is 5V;
Detection probe TX1 and detection probe TX2 uses red test pencil and the black meter pen of common multimeter respectively;
DC is 6V direct supply, and 4 joint No. 5 alkaline batteries can be used to be composed in series.
Circuit production main points and circuit debugging
Because the circuit structure of path break circuit fast detector is fairly simple, as long as the electronic devices and components performance generally selected is intact, and the components and parts annexation to specifications in accompanying drawing 1 is welded, physical connection line and welding quality are through carefully checking correctly, and circuit of the present utility model does not need to carry out debugging and can normally work;
Outward appearance and size etc. as the layout of circuit components of the present utility model, board design, high speed detector high speed detector are not gordian techniquies of the present utility model; neither the claimed technology contents of the utility model, therefore describe in detail no longer one by one in the description.
Claims (1)
1. a path break circuit fast detector, it comprises 6V direct supply, testing circuit and Schmitt trigger circuit, acousto-optic indicating circuit, it is characterized in that:
Described testing circuit and Schmitt trigger circuit are by detection probe TX1 and detection probe TX2, resistance R1 and resistance R2, time base circuit IC1, anti-interference capacitor C1 forms, the model that time base circuit IC1 selects is NE555, time base circuit IC1 the 2nd pin and the 6th pin connecting resistance R1 one end and resistance R2 one end, another termination of resistance R2 detection probe TX1, resistance R1 other end connection circuit positive pole VCC, time base circuit IC1 the 4th pin and the 8th pin connection circuit positive pole VCC, time base circuit IC1 the 5th pin connects anti-interference capacitor C1 one end, the 1st pin connection circuit ground GND of the anti-interference capacitor C1 other end and time base circuit IC1,
Described acousto-optic indicating circuit is made up of green LED LED1 and dropping resistor R3, red light emitting diodes LED2 and dropping resistor R4, hummer HA, time base circuit IC1 the 7th pin connects the negative pole of green LED LED1 by resistance R3, the positive pole connection circuit positive pole VCC of green LED LED1, the positive pole of time base circuit IC1 the 3rd pin connecting resistance R4 one end and hummer HA, the positive pole of another termination red light emitting diodes of resistance R4 LED2, the negative pole of hummer HA and the negative pole connection circuit ground GND of red light emitting diodes LED2;
The positive pole of described 6V direct supply is connected with circuit anode VCC, the negative pole connection circuit ground GND and detection probe TX2 of 6V direct supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420645088.8U CN204228875U (en) | 2014-10-30 | 2014-10-30 | Path break circuit fast detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420645088.8U CN204228875U (en) | 2014-10-30 | 2014-10-30 | Path break circuit fast detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204228875U true CN204228875U (en) | 2015-03-25 |
Family
ID=52926955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420645088.8U Expired - Fee Related CN204228875U (en) | 2014-10-30 | 2014-10-30 | Path break circuit fast detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204228875U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104267308A (en) * | 2014-10-30 | 2015-01-07 | 黄月华 | Fast detector for access circuit and open circuit |
| CN109270391A (en) * | 2018-09-28 | 2019-01-25 | 江西圣塔电缆科技有限公司 | A kind of fire electricity line detection device |
-
2014
- 2014-10-30 CN CN201420645088.8U patent/CN204228875U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104267308A (en) * | 2014-10-30 | 2015-01-07 | 黄月华 | Fast detector for access circuit and open circuit |
| CN109270391A (en) * | 2018-09-28 | 2019-01-25 | 江西圣塔电缆科技有限公司 | A kind of fire electricity line detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150325 Termination date: 20151030 |
|
| EXPY | Termination of patent right or utility model |