CN2294476Y - Secondary loop multipurpose tester - Google Patents
Secondary loop multipurpose tester Download PDFInfo
- Publication number
- CN2294476Y CN2294476Y CN 96220884 CN96220884U CN2294476Y CN 2294476 Y CN2294476 Y CN 2294476Y CN 96220884 CN96220884 CN 96220884 CN 96220884 U CN96220884 U CN 96220884U CN 2294476 Y CN2294476 Y CN 2294476Y
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- diode
- negative pole
- resistance
- connects
- positive pole
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Abstract
The utility model relates to a secondary loop multipurpose tester which can judge the electrode of a circuit element and comprises a casing, a lighting part, a 555 time-base oscillating circuit, a buzzer and an electrode-judging loop, wherein, the buzzer and the electrode-judging loop are connected with the 555 time-base oscillating circuit. The lighting circuit is controlled by a switch at the casing and the positive electrode of the power supply is connected with a jack P1 of the casing. 4, 8 terminals of the 555 time-base circuit are connected with the other jack P2 of the casing and two jacks are connected with two probes. The electrode-judging loop A is reversely connected with a diode D5 and is connected with 4, 8 terminals of the 555 time-base circuit through a resistor R4. The utility model has the advantages of simple structure, integrates lighting, sounding and testing and is an ideal utensil used for testing the secondary loop.
Description
The utility model relates to a kind of tester of decision circuitry component polarity, and particularly a kind of secondary circuit is used tester more.
Secondary circuit is the loop that generating plant, substation primary equipment is monitored, controls, protects measurement.It is equivalent to the nervous system of generating plant, electric substation, should make regular check on it, as unusual or fault occur, should in time check, repair, otherwise will cause a serious accident.Electric substation of existing power plant is used for the detecting electric secondary circuit, main charged polarity of testing the secondary circuit element with traditional neon lamp electrical verification test pen, analyze drawing then and obtain a result,, also need to use the situation of wiring of multimeter test loop and logic if can not judge.Be not easy to judge the charged polarity of secondary circuit element with the neon lamp electroscope, when surveying secondary circuit with multimeter, eyes should be seen test point, need see multimeter again, and are very inconvenient, cause that to take on-the-spot instrument to many, go wrong easily.
The purpose of this utility model provides a kind of easy to carry, and collection test, illumination, sounding are that the secondary circuit of one is used tester more.
The purpose of this utility model adopts following scheme to realize, described tester comprises illumination section, 555 time-base oscillation circuit and the hummer that is attached thereto, lighting circuit is by switch control, 555 time base circuits 4, B terminates to the jack on the shell, another jack connects positive source, the two jacks probe of can pegging graft, of the present utility model being characterised in that: it also comprises a charged polarity judgement loop, its by diode and resistance and 555 time base circuits 4, the B two ends are connected, polarity judges that the loop contacts the element of surveying by the P that pops one's head in.
Described polarity judges that the loop is by resistance R 1, R2, R3, diode D1, D2, D3, D4, D6, D7, phase inverter N1, N2, N3, N4 and two-color diode LD are formed by connecting, probe P connecting resistance R1, resistance R 1 connects the anodal diode D2 of diode D1 negative pole, the negative pole of diode D1 is connected by the positive pole of resistance R 2 and diode D2, phase inverter N2, the N4 series connection, the negative pole of one terminating diode D1, another terminating diode D6 positive pole, the negative pole of diode D6 meets two-color diode LD, phase inverter R1, the N3 series connection, the negative pole of one terminating diode D4, the positive pole of another terminating diode D7, diode D7 negative pole connects two-color diode LD one end, the negative pole of diode D4 connects the positive pole of diode D2 by resistance R 3, and diode D3 positive pole connects the positive pole of diode D2, and the positive pole that the negative pole of diode D3 meets diode D4 is ground connection then.Resistance R 2, diode D2, D3, resistance R 3 common junction and LD one end join and receive then on the negative pole of power supply B1.
The utility model circuit is fairly simple, and when connecing surveyed anodal, the red light of drives diode LD is shinny, when probe contacted the negative pole of the element of surveying, the green light of drives diode LD was shinny, like this when the test components and parts, as long as see the glow color of LD, can judge the polarity of the element of surveying.Because the utility model has a lighting circuit, under some special case, can be used for illumination.Also be provided with two jacks on the shell of described tester, connect two probes in the jack, the loops of two probe contacts are surveyed is same point or during with single line, power source voltage is added to the oscillatory circuit of 555 time base circuits, make hummer YD sounding, remind the user to survey and same point or same single line at 2.Simultaneously, make the LD red light of dichromatic LED shinny.In sum, the utility model line construction is simple, and cost is low, Use Limitation rate height, and collection illumination, sounding, test are one, are the desirable apparatus that is used to test secondary circuit.
Below in conjunction with accompanying drawing the utility model is further described.
Accompanying drawing 1 is circuit theory diagrams of the present utility model.
A district shown in the figure is that charged polarity is judged the loop.
As shown in Figure 1, the utility model comprises shell, illumination section, 555 time-base oscillation circuit and is attached thereto hummer YD and the polarity test loop A that connects, lighting circuit is by 1 control of the K switch on the shell, its positive source is connected with jack P1 on the shell, 555 time base circuit peripheral circuits 4, another jack P2 on the B termination enclosure, the two jacks probe of can pegging graft, charged polarity judges that the negative pole of the diode D6 among the A of loop connects diode D5 negative pole, by resistance R 4 connect 555 time base circuits 4, the B two ends.
Described polarity judges that loop A is by resistance R 1, R2, R3, diode D1, D2, D3, D4, D6, D7, phase inverter N1, N2, N3, N4 and double-colored tripod light emitting diode LD are formed by connecting, probe P connecting resistance R1, resistance R 1 connects the anodal diode D2 of diode D1 negative pole, the negative pole of diode D1 is connected by the positive pole of resistance R 2 and diode D2, phase inverter N2, the N4 series connection, the negative pole of the terminating diode D1 that its series connection is whole, the positive pole of another terminating diode D6, the negative pole of diode D6 meets two-color diode LD, phase inverter N1, the N3 series connection, the negative pole of its whole terminating diode D4 that connects, the anodal diode D7 negative pole of another terminating diode D7 connects two-color diode LD one end, and the negative pole of diode D4 connects the positive pole of diode D2 by resistance R 3, and diode D3 positive pole connects the positive pole of diode D2, the negative pole of diode D3 connects the positive pole of diode D4, the plus earth of D4.Resistance R 2, diode D2, D3, resistance R 3 common junction and two-color diode LD one end join and connect then on the negative pole of power supply B1.
When probe P touched the positively charged polar component, electric current passed through diode D1, resistance R 2 and diode D3 ground connection again through resistance R 1, formed a voltage on R2, and this voltage is anti-phase and amplification through phase inverter N2, N4, makes two-color diode LD red light shinny.If what probe measured is the element of electronegative polarity, electric current through diode D4, resistance R 3, diode D2, forms a voltage by ground on resistance R 3, and this voltage is anti-phase and amplification through phase inverter N1, N3, makes dichromatic LED LD green light shinny.
What measure when probe in P1, the P2 jack is same point or during with single line, power supply B1 voltage is added to the oscillator that 555 integrated packages are formed, make hummer YD send sound, simultaneously, electric current is shinny with the red light of dichromatic LED LD through resistance R 4, and is just more convenient according to the tie lines situation of the luminous judgement secondary circuit of sound like this.
After 1 closure of the K switch on the shell, electric light L1 is luminous, can be used as electric torch and is used for on-the-spot illumination.
Claims (2)
1, a kind of secondary circuit is used tester more, comprise shell, illumination section, 555 time-base oscillation circuit and the hummer YD that is attached thereto, lighting circuit is by 1 control of the K switch on the shell, its power supply B1 jack P1 anodal and on the shell is connected, 555 time base circuits 4, B terminates to another jack P2 on the shell, two jacks connect two probes, it is characterized in that: it also comprises polarity judgement loop A, polarity is judged loop A reversal connection one diode D5, and by resistance R 4 connect 555 time base circuits 4, the B two ends.
2, secondary circuit according to claim 1 is used tester more, it is characterized in that: described polarity judges that the loop is by resistance R 1, R2, R3, diode D1, D2, D3, D4, D6, D7, phase inverter N1, N2, N3, N4 and dichromatic LED LD are formed by connecting, probe P connecting resistance R1, resistance R 1 connects the anodal diode D2 of diode D1 negative pole, the negative pole of diode D1 is connected by the positive pole of resistance R 2 and diode D2, phase inverter N2, the N4 series connection, the negative pole of the terminating diode D1 that its series connection is whole, another terminating diode D6 positive pole, the negative pole of diode D6 meets two-color diode LD, phase inverter N1, N3 is cascaded, the negative pole of its whole terminating diode D4 that connects, the positive pole of another terminating diode D7, diode D7 negative pole connects two-color diode LD one end, the negative pole of diode D4 connects the positive pole of diode D2 by resistance R 3, diode D3 positive pole connects diode D2 positive pole, the negative pole of diode D3 connects the positive pole of diode D4, the plus earth of diode D4, resistance R 2, R3, diode D2, D3 common node and two-color diode LD one end join and receive then on the negative pole of power supply B1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96220884 CN2294476Y (en) | 1996-08-24 | 1996-08-24 | Secondary loop multipurpose tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96220884 CN2294476Y (en) | 1996-08-24 | 1996-08-24 | Secondary loop multipurpose tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2294476Y true CN2294476Y (en) | 1998-10-14 |
Family
ID=33901010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96220884 Expired - Fee Related CN2294476Y (en) | 1996-08-24 | 1996-08-24 | Secondary loop multipurpose tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2294476Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103576041A (en) * | 2012-08-07 | 2014-02-12 | 国家电网公司 | Method and device for detecting electrical equipment secondary circuit |
-
1996
- 1996-08-24 CN CN 96220884 patent/CN2294476Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103576041A (en) * | 2012-08-07 | 2014-02-12 | 国家电网公司 | Method and device for detecting electrical equipment secondary circuit |
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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 |