CN2114168U - Pocket line-break detector electrocians - Google Patents
Pocket line-break detector electrocians Download PDFInfo
- Publication number
- CN2114168U CN2114168U CN 92215252 CN92215252U CN2114168U CN 2114168 U CN2114168 U CN 2114168U CN 92215252 CN92215252 CN 92215252 CN 92215252 U CN92215252 U CN 92215252U CN 2114168 U CN2114168 U CN 2114168U
- Authority
- CN
- China
- Prior art keywords
- resistance
- working power
- arbiter
- ternary
- circuit
- 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.)
- Granted
Links
Images
Abstract
The utility model relates to a pocket line-break detector for electricians, which is composed of a resistance tristate arbiter for a detected circuit, a signal tristate arbiter, a signal indicator and an automatic switch for a working power supply that are connected with each other. The utility model has the advantages of small volume and portable use and has tristate acoustic-optic indications of low resistance, medium resistance and high resistance to the detected circuit. The pocket line-break detector for electricians can automatically switch on a working power supply when used and can automatically cut off the working power supply when the detection is over. So the operation time of the battery which is served as the working power supply can be prolonged. The utility model can be used for rapid detecting circuit break or finding out circuit wiring for electricians and other engineers.
Description
The utility model relates to quick measuring circuit break-make that a kind of electrician uses always or the pocket circuit on-off detecting device of searching the circuit wiring.
The electrician is when the break-make of measuring circuit or electric equipment at present, all measure with one grade of the resistance or the logical table shelves of multimeter, when using multimeter, generally need two people operation, one people searches a people and sees meter sense, and it is very inconvenient to use, and shortcoming is to carry inconvenience during with logical table shelves, and can only represent two state indications of circuit on-off, can not know the probable ranges of line resistance.
The purpose of this utility model is, it is little to design a kind of volume, can carry, easy to use, can be with sound equipment and luminous two kinds of indicator signals, the conducting state (low-resistance) of indication test line or electric equipment, ternary circuit on-off detecting device such as resistance states (middle resistance) and open-circuit condition (high resistant) is arranged, be saving working power battery consumption, in detecting device, also be provided with when measuring and connect working power automatically, measure the switching circuit that can cut off working power automatically after finishing.
The technical solution of the utility model adopts by the ternary arbiter of measured resistance, the ternary arbiter of signal, signal meter (SM) and working power automatic switch and is formed by connecting, and the ternary arbiter of measured resistance is by R
1, R
2, R
3, R
4And two operational amplifier F in two comparison bridge loops of external measured resistance Rx composition
1And F
2The voltage comparator and the D that form
1, D
2Two triode composition ternary signal output circuits are connected and form; The ternary arbiter of signal is by R
8And C
1The integration delay loop of forming, R
9, R
10, R
11, R
12The comparative level loop that constitutes reaches by operational amplifier F
3The voltage comparator of forming is formed by connecting; The working power automatic switch is transistor K
1And resistance R
5, R
6Be formed by connecting.
The utility model embodiment is described in detail in conjunction with the accompanying drawings.
Fig. 1 is a circuit on-off detector concept block scheme;
Fig. 2 is a circuit on-off detecting device circuit schematic diagram.
By shown in Figure 1, the utility model is by the ternary arbiter of measured resistance, and the ternary arbiter of signal, sound equipment are inhaled partly composition such as luminous indication, working power automatic switch, and by shown in Figure 2, the ternary arbiter of measured resistance is by two operational amplifier F
1And F
2The voltage comparator of forming is judged voltage between B point and the C point and the voltage between B point and the D point respectively, by R
1, R
2, R
3, R
4And outer meeting resistance R
xForm two tool comparison bridge loops, E is D
1, D
2Two diodes are formed the output point and the amplifier F of ternary signal output circuit
3Input point, its principle of work: be two measured resistance R
xNot not simultaneously, B point current potential is followed variation, and the comparison current potential that C is ordered is then high than the D point, works as R
xWhen resistance value was bordering on zero, then B point current potential was lower than C point and D point current potential, then F
1And F
2The output high level is because D
2Conducting makes the E point for high level output, works as R
xDuring open circuit, B point current potential is all higher than C point and D point, so F
1And F
2Output low level is because D
1Conducting makes the E point for low level output, works as R
x(definite scalable R that the resistance state is arranged when the resistance state is arranged
1, R
2, R
3Between ratio and determine), B point current potential is lower and when higher than the D point than the C point, F
1The output high level, F
2Output low level, therefore, D
1, D
2All not conductings make the E point be the high resistant quick condition.
The ternary arbiter of signal is by voltage comparator F
3, R
8, C
1Integration delay loop and R
9, R
10, R
11, R
12The comparative level loop of forming is formed by connecting, and works as F
3Input E point when being high level, the H point then is a low level, when the E point was low level, the H point was by then being high level, above two-state, F
3Use its inverter functionality, and when the E point is the high resistant quick condition, F
3Output is vibrated, by R
11And R
12Divide and hold G voltage altogether, through R
10, R
9After the dividing potential drop as F
3Comparative level, this level is through R
8To C
1Charging, after charging made the E point be higher than comparative level, the H point is output low level then, meanwhile, passes through R
2Discharge is after the E level point is lower than comparative level, and the H point is then exported high level, at this moment, and again through R
8To C
1Charging so constantly is concatenated to form no steady oscillation, and the signal of three kinds of different conditions of H point output is high level, oscillatory regime, low level like this, and tri-state signal is via triode G
1The signal driver of forming is connected R with the signal meter (SM) of being made up of buzzer and light emitting diode
XBe low-resistance, the continuous sound and luminous, R
XThe then interrupted sound and luminous during for middle resistance, R
XThen do not have acousto-optic during for high resistant, when using usually, low-resistance is 0～10 Ω, and resistance is that 10 Ω～20K high resistant is 20K～∞.The working power switch is by triode K
1And resistance R
5, R
6Form, work as R
XDuring for open circuit or high resistant, the B point is a high level, R
5Middle electric current is similar to zero, K
1Because of no bias current disconnects, work as R
XDuring for middle resistance or low-resistance, R
5Last current-sharing excess current, K
1Bias current is arranged and conducting, thereby finish the work of cut-offfing working power automatically, working power is saved greatly.
The utility model can be by three kinds of states to the break-make of circuit, represent with acousto-optic, and can make very little, can put into operating personnel's pocket, it is very convenient to carry application, and the automatic in use energized of detecting device is measured and finished cut-out working power automatically, prolonged working time greatly, thereby the utility model can be used for quick measuring circuit break-make or search the circuit wiring for electrician and other engineering technical personnel as the battery of working power.
Claims (4)
1, a kind of electrician is characterized in that with pocket circuit on-off detecting device, and it is formed by connecting by the ternary arbiter of measured resistance, the ternary arbiter of signal, signal meter (SM) and working power automatic switch.
2, electrician according to claim 1 is characterized in that with pocket circuit on-off detecting device, and the ternary arbiter of measured resistance is by R
1, R
2, R
3, R
4And external measured resistance R
xTwo the operational amplifier F in two comparison bridge loops that form
1And F
2The voltage comparator of forming and by D
1, D
2Two diode composition ternary signal output circuits are connected and form.
3, electrician according to claim 1 is characterized in that with pocket circuit on-off detecting device, and the ternary arbiter of signal is by R
8And C
1The integration delay loop of forming, R
9, R
10, R
11, R
12The comparative level loop that constitutes reaches by operational amplifier F
3The voltage comparator of forming is formed by connecting.
4, electrician according to claim 2 is characterized in that with pocket circuit on-off detecting device the working power automatic switch is by transistor K
1And resistance R
5, R
6Connection is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92215252 CN2114168U (en) | 1992-03-13 | 1992-03-13 | Pocket line-break detector electrocians |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92215252 CN2114168U (en) | 1992-03-13 | 1992-03-13 | Pocket line-break detector electrocians |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2114168U true CN2114168U (en) | 1992-08-26 |
Family
ID=4959680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92215252 Granted CN2114168U (en) | 1992-03-13 | 1992-03-13 | Pocket line-break detector electrocians |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2114168U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111044774A (en) * | 2019-12-16 | 2020-04-21 | 深圳供电局有限公司 | Potential difference monitoring circuit and method for power distribution facility |
-
1992
- 1992-03-13 CN CN 92215252 patent/CN2114168U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111044774A (en) * | 2019-12-16 | 2020-04-21 | 深圳供电局有限公司 | Potential difference monitoring circuit and method for power distribution facility |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2114168U (en) | Pocket line-break detector electrocians | |
| CN104165747B (en) | A kind of portable detector of mechanical switch falling weight impact test | |
| CN207703977U (en) | A kind of hand-held semi-conductor discrete device test device | |
| CN207692118U (en) | The illumination control apparatus of self-diagnosable and Redundant Control | |
| CN206470378U (en) | Power of computer room monitoring device | |
| CN201725010U (en) | Multifunctional crystal grain spot measurement circuit of spot measurement machine and multifunctional spot measurement machine | |
| CN104459263A (en) | Pointer ampere meter capable of automatically shifting gears | |
| CN107765062A (en) | Voltage test pencil and its test circuit | |
| CN103983883B (en) | Low-voltage direct load cut-off observation circuit | |
| CN208076557U (en) | A kind of multi-functional automobile-used test pen | |
| CN2134655Y (en) | Acoustooptic electroscope | |
| CN201196661Y (en) | Multifunctional AC electroprobe | |
| CN85205784U (en) | On-off-indicating unit for electric circuit | |
| CN2132996Y (en) | Multifunction base check apparatus | |
| CN206096335U (en) | Distribution detection device | |
| CN2146716Y (en) | Voltage-detecting AC digital instrument | |
| CN215833480U (en) | Multifunctional detection device | |
| CN2358460Y (en) | Tester for testing battery capacity | |
| CN217156766U (en) | Car lamp lighting test system based on high-precision voltage and current double-display meter | |
| CN2190303Y (en) | Electronic energy-preserving tester | |
| CN206594248U (en) | A kind of automobile line detector | |
| CN218974563U (en) | Multifunctional rapid detector | |
| CN107765070A (en) | A kind of Multifunction screw-driver with voltage tester and its test circuit | |
| CN210513237U (en) | Intelligent pressure or temperature transmitter capable of automatically switching over and powered by double power supplies | |
| CN2130265Y (en) | Load storage energy electronic electricity test pen |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |