CN201408234Y

CN201408234Y - Electronic cable tester

Info

Publication number: CN201408234Y
Application number: CN2009200936533U
Authority: CN
Inventors: 刘金庆
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-05-19
Filing date: 2009-05-19
Publication date: 2010-02-17
Anticipated expiration: 2019-05-19

Abstract

The utility model discloses an electronic cable tester which comprises a line marking device, a resistance divider buffer circuit, detecting electrodes, a light-emitting diode (LED) and a direct current (DC) power supply, wherein the line marking device is formed by a plurality of equivalent series resistors; the resistance divider buffer circuit comprises a voltage divider, a non-gate circuit, atriode and a CD 4069 inverter; the voltage of the DC power supply is loaded on a collector and an emitter of the triode; the emitter is connected in series with the LED; the non-gate circuit is connected in series with the triode; the resistors of the line marking device are connected in parallel with a base electrode through cable cores and two detecting electrodes and then connected in series with the voltage divider; the CD 4069 inverter is connected in parallel with the resistance divider buffer circuit; the voltage loaded on the resistor of the line marking device is the low level of thefirst pin of the CD 4069 inverter; the sum of the voltage of the line marking device and the voltage of the voltage divider is equal to the voltage of the DC power supply; and the voltage of the DC power supply is 3V, the electronic cable tester has extremely low power consumption, extremely wide testing range and low manufacturing cost.

Description

The electronic cables tester

Technical field

The utility model relates to a kind of surveying instrument that is used to detect polycore cable, particularly a kind of electronic cables tester.

Background technology

At present, prior art is tested polycore cable, and most multimeters that adopt carry out the logical line measurement of craft, measuring speed is slower, and particularly the core number of some used cable in field has tens, as carry out the identification of core number with multimeter, waste the plenty of time, greatly reduced work efficiency.

Summary of the invention

The utility model is in order to solve slow, the ineffective problem of multimeter identification cable speed, and the electronic cables tester of a kind of quick identification cable core of invention number.

The utility model is by the wire size device, the resitstance voltage divider buffer circuit, exploring electrode, light emitting diode, direct supply is formed, wherein the wire size device is made up of several equivalent series resistances, be provided with wiring position between adjacent two resistance, the number of heart yearn is corresponding in the number of resistance and the polycore cable, the resitstance voltage divider buffer circuit is by voltage divider, not circuit, triode and CD4069 phase inverter constitute, wherein, the voltage of direct supply is carried on the collector and emitter of triode, emitter series connection light emitting diode, not circuit is connected with the base stage of triode, the resistance of wire size device is connected with voltage divider after surveying the utmost points and base stage parallel connection by cable core and two again, the CD4069 phase inverter is in parallel with the resitstance voltage divider buffer circuit, the voltage that wire size device resistance loads is the low level of CD4069 phase inverter 1 pin, and the voltage sum that voltage that wire size device resistance loads and voltage divider load equals the voltage of direct supply.

The course of work of the present utility model is: earlier survey the utmost points with two and connect the resistance with the interior single resistance equivalence of wire size device, regulate the resistance value of resistance value fixed resistance voltage divider behind lumination of light emitting diode of resitstance voltage divider, one end of each heart yearn of polycore cable is connected to the wiring position between the corresponding resistor is numbered successively from 1 on the wire size device, survey utmost point ground connection with one then, the other end such as lumination of light emitting diode Line 1 that the polycore cable heart yearn is touched in another detection utmost point examination are identified, making common port with Line 1 then surveys utmost point examination with another and touches other heart yearns No. 2 lines when the lumination of light emitting diode and be identified, by that analogy, up to finding all wire sizes.

The beneficial effects of the utility model: supply voltage is low, and direct supply only needs 3V voltage, and electric current is little, and power consumption is extremely low, test specification is wide, no matter the cable of which kind of purposes can be discerned, test speed is fast, greatly improved work efficiency, drawn materials conveniently, cost of manufacture is low.

Description of drawings

Fig. 1 schematic circuit of the present utility model.

31, wire size device 32, voltage divider 33, not circuit 34, triode

35, phase inverter 36, exploring electrode 37, direct supply 38, light emitting diode

41, polycore cable 42, heart yearn 43, resistance 44, phase inverter 1 pin.

Embodiment

See also shown in Figure 1: the utility model is by wire size device 31, the resitstance voltage divider buffer circuit, exploring electrode 36, light emitting diode 38, direct supply 37 is formed, wherein wire size device 31 is made up of several equivalent series resistances 43, the resistance value of resistance 43 is 200k Ω, be provided with wiring position between adjacent two resistance 43, the number of heart yearn 42 is corresponding in the number of resistance 43 and the polycore cable 41, the resitstance voltage divider buffer circuit is by voltage divider 32, not circuit 33, triode 34 and CD4069 phase inverter 35 constitute, wherein, the voltage of direct supply 37 is carried on the collector and emitter of triode 34, emitter series connection light emitting diode 38, not circuit 33 is connected with the base stage of triode 34, the resistance 43 of wire size device 31 is connected with voltage divider 32 by after cable core 42 and two exploring electrodes 36 and the base stage parallel connection again, CD4069 phase inverter 35 is in parallel with the resitstance voltage divider buffer circuit, the voltage that wire size device 31 resistance load is 1 pin, 44 low levels of CD4069 phase inverter 35, the voltage sum that voltage that wire size device 31 resistance load and voltage divider 32 load equals the voltage of direct supply 37, and the magnitude of voltage of direct supply 37 is 3V.

Claims

1, a kind of electronic cables tester, it is characterized in that: be by the wire size device, the resitstance voltage divider buffer circuit, exploring electrode, light emitting diode, direct supply is formed, wherein the wire size device is made up of several equivalent series resistances, be provided with wiring position between adjacent two resistance, the number of heart yearn is corresponding in the number of resistance and the polycore cable, the resitstance voltage divider buffer circuit is by voltage divider, not circuit, triode and CD4069 phase inverter constitute, wherein, the voltage of direct supply is carried on the collector and emitter of triode, emitter series connection light emitting diode, not circuit is connected with the base stage of triode, the resistance of wire size device is connected with voltage divider after surveying the utmost points and base stage parallel connection by cable core and two again, the CD4069 phase inverter is in parallel with the resitstance voltage divider buffer circuit, the voltage that wire size device resistance loads is the low level of CD4069 phase inverter 1 pin, and the voltage sum that voltage that wire size device resistance loads and voltage divider load equals the voltage of direct supply.

2, electronic cables tester according to claim 1 is characterized in that: the magnitude of voltage of described direct supply is 3V, and the resistance value of single resistance is 200k Ω in the wire size device.