CN2214718Y - Electronic induction line seeker - Google Patents
Electronic induction line seeker Download PDFInfo
- Publication number
- CN2214718Y CN2214718Y CN94211281U CN94211281U CN2214718Y CN 2214718 Y CN2214718 Y CN 2214718Y CN 94211281 U CN94211281 U CN 94211281U CN 94211281 U CN94211281 U CN 94211281U CN 2214718 Y CN2214718 Y CN 2214718Y
- Authority
- CN
- China
- Prior art keywords
- pin
- oscillator
- circuit
- resistance
- receiver
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Circuit For Audible Band Transducer (AREA)
Abstract
The utility model relates to an electronic induction wire seeker. The utility model is composed of an oscillator and a receiver, wherein, the oscillator is composed of a casing, a pulse tempo generator, an audio oscillator and a short circuit checking circuit, and the receiver is composed of a casing, a low-frequency class B amplifier IC and a source follower B1. The oscillator and the receiver are two independent components, the utility model can seek any twine of many core wires of the cable when the oscillator and the receiver are matched together without barking the checked cable, and the service life of the circuit is extended. The utility model has the advantages of small size, light weight, convenient operation, reasonable structure and easy application.
Description
The utility model relates to a kind of electronics line finder, especially a kind of induction type line finder that cable is not had damage.
Each telephone office, constituent parts exchange in the cable construction of carrying out the electric equipment installation, in order to implement the standardization construction, all will carry out the work of hunting check mark at present.At work must headphone, carry heavy cabinet on the body, and look into just seeking behind the cable peeling, it is more difficult particularly to search concealed wire, its amount of labour is big, inconvenient operation.
The purpose of this utility model is in order to provide a kind of volume little, lightweight electronic induction line finder.
This electronic induction line finder, form by oscillator and receiver two parts, it is characterized in that oscillator is by a shell, the pulse beat generator, audio frequency oscillator and test for short-circuit circuit are formed, one end of the capacitor C 3 of pulse beat generator is connected with the positive pole of the diode D1 of audio frequency oscillator, the 6th of integrated circuit (IC) in the audio frequency oscillator, 8 pin are connected with an end of resistance R 3 in the test for short-circuit circuit, the rectifier diode D2 of test for short-circuit circuit, the common port of light-emitting diode D3 and resistance R 8 is connected with an end of K switch, the other end of resistance R 8 is connected with the negative pole of power supply, the other end of K switch is connected with the 14th pin of ic chip in the audio frequency oscillator, receiver is by a shell, low frequency class B amplifier IC and source follower B1 form, the 6th pin of low frequency class B amplifier IC, the 7th pin is connected via the D utmost point of resistance R 7 with positive source and source follower B1, the 3rd pin of low frequency class B amplifier IC is connected with the S utmost point of source follower B1 by capacitor C 2, the 4th pin of low frequency class B amplifier IC, the 2nd pin is via resistance R 5, capacitor C 3, its the 5th pin is via resistance R 6, capacitor C 4 is connected with the negative pole of power supply, the G utmost point of source follower B1 and resistance R 1, R2, an end of capacitor C 1 is connected.
Below in conjunction with accompanying drawing architectural feature of the present utility model is further specified.
Accompanying drawing 1 is the fundamental diagram of oscillator.
Wherein R1-R3 is a resistance, and C1-C6 is an electric capacity, and D1, D2 are 2 utmost point pipes, and D3 is luminous 2 utmost point pipes, and IC is a ungated integrated circuit.This circuit is promptly formed with above-mentioned known components and parts.
Accompanying drawing 2 is the fundamental diagram of receiver.
Wherein R1-R7 is a resistance, and C1-C7 is an electric capacity, and IC is low volume class B amplifier, and B1 is a source follower, adopts field effect transistor, and this circuit is promptly formed with above-mentioned known components and parts.
Now the operation principle with oscillator 1 is described as follows in conjunction with the accompanying drawings:
Oscillator is divided into two parts.First is " audio frequency oscillator "; Second portion is " beat generator " (being called for short " pulse generator ").The main element integrated circuit (IC) of oscillator, inside comprise six inverters.Be its 1 pin and 2 pin, 3 pin and 4 pin, 5 pin and 6 pin, 8 pin and 9 pin, 10 pin and 11 pin, 12 pin and 13 pin, be respectively inverter 1,2,3,4,5,6; 7 pin are power-VSS; 14 pin are the positive VDD of power supply.
How narrate oscillator below emphatically and be to line output signal?
The first of oscillator, " audio frequency oscillator ", its circuit is made up of inverter 5,6 and resistance R 1, R2 and the capacitor C 2 of integrated circuit (IC), and the height of its frequency is mainly by R
2Decide with the size of C2.Second portion " pulse generator " is by the inverter 1,2 of integrated circuit (IC), resistance R 4, R5 and capacitor C
3Form.The speed of its beat is by R5 and C
3Size decide.This circuit is by the 9V DC power supply.Behind the power connection, audio frequency oscillator and pulse generator are worked simultaneously.The effect of pulse generator is added to the output of audio frequency oscillator by diode D1 and resistance R 6, makes the higher audio signal of frequency be subjected to the modulation of the lower clock pulse of frequency.Enter the input of the inverter 3,4 of integrated circuit (IC) again through the audio signal of ovennodulation.Can will modulate through resistance R 3, capacitor C 1 through its output, reference frequency output outputs on the circuit at the audio pulse of 600-1000HZ again.
In addition, but by the short circuit check circuit, by diode D2, D3, resistance R 7, R8 composition.During as the outside line short circuit, after the K switch closure, electric current is from positive pole, and the road is through K switch, diode D2, D3, resistance R 7, and short-circuit line is to negative pole.Mainly to light-emitting diode D3 current limliting, D2's R7 shields to D3 in this circuit.Another shunt circuit is a resistance R 8, mainly diode D2, D3 is shunted.When K is closed, electric current from positive pole through R8 to negative pole.As the institute short out road of survey line, after the K closure, light-emitting diode D3 has certain electric current to flow through.At this moment, light-emitting diode D3 sends out high light, the display circuit short circuit.
Luminous, the circuit short circuit.
The operation principle of 2 pairs of receivers is done following explanation equally, in conjunction with the accompanying drawings:
Receiver circuit mainly is made up of low frequency class B amplifier IC, source follower B1, resistance R 1-R7, capacitor C 1-C7.The line influence signal is imported via resistance R 1, source follower B1, capacitor C 2 to the pin 3 of amplifier IC, utilizes the discharging voltage of electric field control drain current of field effect transistor B1, and B1 inserts amplifier IC as source follower signal is amplified.The resistance R 4 of amplifier IC pin 3 and pin 4 is biasing resistors of amplifier IC, the resistance R 5 of amplifier IC pin 2 and pin 4 and capacitor C 3 are negative feedback resistors of low frequency amplifier IC, change the resistance value of resistance R 5, can change amplification quantity, resistance R 3 increases, amplification quantity reduces, and vice versa.Capacitor C 3 is to exchange to become road electric capacity, high frequency negative feedback capacity on the pin 1 of low frequency class B amplifier IC and the capacitor C 8 of pin 5, it can erase amplifier self-excitation, it is used for eliminating paying certainly of amplification, capacitor C 5 and loud speaker are formed bootstrap capacitor, can improve the amplitude of signal voltage output, improve amplification quantity.When receiver was sensed the signal that is transmitted by oscillator, its loud speaker can send the sound equipment of 600-1000HZ.
In use, two individual components of oscillator and receiver use of working in coordination.Arbitrary in order in the many heart yearns of cable storage, to search to line, can on a pair of heart yearn of cable one end, connect oscillator, after starting power supply, is that available receiver is sensed the signal that sends from line one end in certain of the other end of cable on to heart yearn, this moment, the loud speaker of receiver sent sound equipment, and this promptly is to seek the heart yearn of looking into to heart yearn, by this utility model, earphone on the connection can carry out communication at the two ends of cable.
The utility model volume is little, and is in light weight, is easy to carry, easy and simple to handle, in seeking the process of looking into, do not need cable peeling, prolonged the useful life of circuit, be particularly suitable for searching of concealed wire looking into, it is rational in infrastructure, implements easily, and employed components and parts all can have been bought in market.
Claims (1)
- A kind of electronic induction line finder, form by oscillator and receiver two parts, it is characterized in that oscillator is by a shell, the pulse beat generator, audio frequency oscillator and test for short-circuit circuit are formed, one end of the capacitor C 3 of pulse beat generator is connected with the positive pole of the diode D1 of audio frequency oscillator, the 6th of integrated circuit (IC) in the audio frequency oscillator, 8 pin are connected with an end of resistance R 3 in the test for short-circuit circuit, the rectifier diode D2 of test for short-circuit circuit, the common port of light-emitting diode D3 and resistance R 8 is connected with an end of K switch, the other end of resistance R 8 is connected with the negative pole of power supply, the other end of K switch is connected with the 14th pin of ic chip in the audio frequency oscillator, receiver is by a shell, the composition of low frequency class B amplifier IC and source follower B1, the 6th pin of low frequency class B amplifier IC, the 7th pin is connected via the D utmost point of resistance R 7 with positive source and source follower B1, the 3rd pin of low frequency class B amplifier IC is connected with the S utmost point of source follower B1 by capacitor C 2, the 4th pin of low frequency class B amplifier IC, the 2nd pin is via resistance R 5, capacitor C 3, its the 5th pin is via resistance R 6, capacitor C 4 is connected with the negative pole of power supply, the G utmost point of source follower B1 and resistance R 1, R2, one end of capacitor C 1 is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94211281U CN2214718Y (en) | 1994-05-20 | 1994-05-20 | Electronic induction line seeker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94211281U CN2214718Y (en) | 1994-05-20 | 1994-05-20 | Electronic induction line seeker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2214718Y true CN2214718Y (en) | 1995-12-06 |
Family
ID=33828450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94211281U Expired - Fee Related CN2214718Y (en) | 1994-05-20 | 1994-05-20 | Electronic induction line seeker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2214718Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102073000A (en) * | 2010-11-15 | 2011-05-25 | 江苏省电力公司徐州供电公司 | Audio finder for multicore control cable |
| CN101729928B (en) * | 2008-10-27 | 2012-08-01 | 中国移动通信集团湖南有限公司 | Sniffing equipment for locating transmission interface, method and sniffing signal transmission equipment |
| CN104020494A (en) * | 2014-06-16 | 2014-09-03 | 雷鸣 | Novel line hunting method |
| CN105572536A (en) * | 2016-01-08 | 2016-05-11 | 沈阳时尚实业有限公司 | 485 bus communication network short circuit fault point clearing-free live-line detecting instrument |
-
1994
- 1994-05-20 CN CN94211281U patent/CN2214718Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101729928B (en) * | 2008-10-27 | 2012-08-01 | 中国移动通信集团湖南有限公司 | Sniffing equipment for locating transmission interface, method and sniffing signal transmission equipment |
| CN102073000A (en) * | 2010-11-15 | 2011-05-25 | 江苏省电力公司徐州供电公司 | Audio finder for multicore control cable |
| CN104020494A (en) * | 2014-06-16 | 2014-09-03 | 雷鸣 | Novel line hunting method |
| CN105572536A (en) * | 2016-01-08 | 2016-05-11 | 沈阳时尚实业有限公司 | 485 bus communication network short circuit fault point clearing-free live-line detecting instrument |
| CN105572536B (en) * | 2016-01-08 | 2018-07-24 | 北方智能装备有限公司 | 485 bus communication network short circuit trouble points are without electrification survey meter of taking out stitches |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2214718Y (en) | Electronic induction line seeker | |
| CN207150798U (en) | Stereo set | |
| CN207882381U (en) | A kind of rural area low-voltage circuit electric leakage lookup device | |
| CN109495811A (en) | Speaker | |
| CN211019203U (en) | Microphone audio frequency conversion equipment | |
| CN2380267Y (en) | Swimming-training electronic instrument | |
| CN202513836U (en) | Novel circuit for converting alternating current into direct current | |
| CN207460555U (en) | A kind of LED constant current driving power | |
| CN107212865A (en) | A kind of Wearable pulse signal Acquisition Circuit | |
| CN2054168U (en) | Portable multipurpose lineman's detector | |
| CN206775719U (en) | A kind of amplifier power supply system for gathering multifunctional intellectual sound equipment | |
| CN208172999U (en) | It is a kind of for boring the electrical power carrier circuit of the dedicated end effector of riveting machining robot | |
| CN211293710U (en) | Wireless bluetooth intelligence musical instrument box | |
| CN2315625Y (en) | Megaphone with recording and replaying function | |
| CN209250616U (en) | The direction-finding station motor message source for having automatic antenna tuber function | |
| CN203267898U (en) | Voice prompter | |
| CN210958664U (en) | Intelligence bluetooth sound circuit | |
| CN216313051U (en) | Single-channel double-output audio power amplifier | |
| CN201210160Y (en) | Household intelligent electricity fee enquiry terminal | |
| CN209679020U (en) | A kind of power supply stabilization circuit and the portable rehabilitation training instrument using the circuit | |
| CN206136244U (en) | 2. 4G wireless stereo set that encircles | |
| CN206178065U (en) | Circuit load indicator | |
| CN2757101Y (en) | Water immersion detector | |
| CN2321188Y (en) | Speaker with Karaoke function | |
| CN2243156Y (en) | Mini-size wired microphone |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |