CN201877046U - Conductivity tester for objects - Google Patents
Conductivity tester for objects Download PDFInfo
- Publication number
- CN201877046U CN201877046U CN2010205252862U CN201020525286U CN201877046U CN 201877046 U CN201877046 U CN 201877046U CN 2010205252862 U CN2010205252862 U CN 2010205252862U CN 201020525286 U CN201020525286 U CN 201020525286U CN 201877046 U CN201877046 U CN 201877046U
- Authority
- CN
- China
- Prior art keywords
- display lamp
- lead
- glass bar
- lead wires
- objects
- 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
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model discloses a conductivity conversion tester for objects, wherein a display lamp is arranged on the upper-middle part of an insulation plate; a bracket is arranged at the bottom left side of the insulation plate; a glass rod is arranged in the bracket; left and right ends of the glass rod are respectively encircled with two sections of naked lead wires; the distance between the two sections of the lead wires is 1-2cm; left and right ends of a light-emitting diode are respectively connected on two probes by the lead wires; when in testing, the two probes are connected on the naked lead wires from both ends to form a series circuit; the display lamp is not light at the normal temperature, and the glass rod is proved as an insulator. The conductivity tester for the objects is simple in structure, low in production cost and good in test effect.
Description
Technical field:
The utility model relates to a kind of teaching equipment, the tester of definite a kind of test object conductive capability of saying so.
Background technology:
In the teaching of junior physics integrated practice and nature study, mutual transition problem about strong and weak degree of the conduction of object and insulation, must test after tested, can reach the teaching purpose of expection, at present in vast junior high school, still not having has this type of equipment to use, and brings inconvenience for the physics teaching in junior middle school.
Summary of the invention:
The purpose of this utility model provides a kind of object conductive capability tester, is applied to intuitively in the teaching test, further inspires student's study thinking, satisfies teaching demand.
Scheme of the present utility model comprises insulcrete, display lamp, glass bar, probe, display lamp is equipped with at the middle part on insulcrete, the lower-left side of insulcrete is provided with support, glass bar is housed in the support, be wound with two sections bare leads respectively at the two ends, the left and right sides of glass bar, the midfeather 1-2cm of two section leads, be connected to lead on two probes at the two poles of the earth of display lamp, during test two probes are connected on the bare lead from two ends, constitute series circuit, display lamp does not work at normal temperatures, proves that glass bar is an insulator.
The utility model is simple in structure, designs ingeniously, and the processing cost is low, good test effect.
Be described in further detail below in conjunction with accompanying drawing.
Description of drawings:
Fig. 1 is the utility model structural representation;
Fig. 2 is the circuit theory diagrams of display lamp.
Embodiment:
The middle part of going up of the insulcrete 4 shown in Fig. 1 is provided with display lamp 2, direct supply is equipped with in the bottom side of display lamp, the lower-left side of insulcrete is provided with support 1, glass bar 9 is housed in the support, the left end of glass bar is wound with left bare lead 8, right-hand member is wound with right bare lead 6, the two poles of the earth, the left and right sides of display lamp are connected by lead respectively, left side probe 7 is housed on the lead in left side, right probe 5 is housed, the bare conductor spacing 1-2cm at two ends, the left and right sides on the lead on right side, during test a left side is popped one's head in 7, right probe 5 is connected on the bare lead from two ends, constitute series circuit, at normal temperatures, recording glass bar is insulator.
Electric cloudy R1 shown in Fig. 2 is 200 kilo-ohms-500 kilo-ohms,
Kilo-ohms-350 kilo-ohms, triode V1 is a C945 PAP low-power transistor, triode V2 is an A1015 NPN low-power transistor, light emitting diode V3 is red strong light emitting diode, power supply RS is the 3V direct supply, with the lower end of resistance R 1 and the emitter-base bandgap grading E of V1, the collector C of V2, the Rs power cathode connects, the upper end of R1 and V1 base stage B, the left end of R2 connects, the collector C of V1 is connected with the base stage B of V2, and the emitter E of V2 is connected with the negative pole of V3, and the positive pole of V3 is connected with the positive pole of Rs power supply, the right-hand member of R2 is a test probe 7, another probe 5 of the just very test of Rs power supply.
Embodiment one:
Conductor, the judgement of insulator.With two probes of tester, the two ends of receiving testee respectively when display lamp (being light emitting diode) is bright, illustrate that testee conducts electricity easily, are conductors.Otherwise easy conductive is not insulator.
Embodiment two:
Mutual conversion between conductor and the insulator.
A. use two sections thin wires, twine two circles at the two ends of glass bar respectively, be advisable for middle interval 1-2 centimetre, again probe is received on the iron wire, constitute series circuit.Display lamp does not work at normal temperatures, proves that glass bar is an insulator.When heating for the middle glass bar of iron wire with lighter, along with temperature raises, display lamp brightens gradually, proves that glass bar has been converted into conductor by insulator.
B. stop heating, the glass bar temperature reduces, and display lamp is extinguished by bright being darkened to, and at this moment glass bar has changed into insulator again by conductor.
C. subsequently to the glass bar water spray, display lamp is bright again, illustrates that insulator can be converted into conductor when making moist.
D. dry the water on the glass bar, when breathing out facing to glass bar with mouth, display lamp is bright again, proves that malaria also can conduct electricity.
Embodiment three:
The unidirectional guidance quality of check diode.The bipod of diode exchanged respectively receive on two probes, have only a direction during positive grade join of the positive pole of diode and power supply, the bright explanation diode of display lamp has unilateral conduction.
Embodiment four:
The break-make of testing circuit.Test line is received on two probes, and display lamp is bright, and circuit leads to, otherwise is to open circuit.
Embodiment five:
The electric leakage of electric capacity.The two poles of the earth of capacitor are inserted respectively on two probes, and display lamp can be extinguished by bright being darkened to, and illustrates that electric capacity is good (capacity light more time long more), if bright for a long time, illustrates capacity fall off, perhaps because of breakdown short circuit.
Embodiment six:
The liquid conduction ability.Two probes are inserted in the fluids to be measured, according to the bright-dark degree of display lamp, the power of conductive capability is described, pure water is nonconducting (as medical injection water), but also can conduct electricity when sneaking into impurity.This shows that this tester also can be used for detecting the quality of water quality.
Embodiment seven:
When judging zero line, phase line, must be the positive source of handheld meter, near the insulated part (also can contact) the probe.Make another probe remove to come close to or in contact with tested lead simultaneously, this moment, display lamp was bright, illustrated that tested lead is a phase line; Display lamp does not work, and then tested lead is a zero line.
Claims (2)
1. object conductive capability tester, comprise insulcrete, display lamp, glass bar, probe, it is characterized in that: the middle part of going up of described insulcrete (4) is provided with display lamp (2), the lower-left side of insulcrete is provided with support (1), glass bar (9) is housed in the support, the left end of glass bar is wound with left bare lead (8), and right-hand member is wound with right bare lead (6).
2. object conductive capability tester according to claim 1, it is characterized in that: the two poles of the earth of described display lamp are connected by lead respectively, left side probe (7) is housed on the lead in left side, right probe (5) is housed, the bare conductor spacing 1-2cm at two ends, the left and right sides on the lead on right side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205252862U CN201877046U (en) | 2010-09-07 | 2010-09-07 | Conductivity tester for objects |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205252862U CN201877046U (en) | 2010-09-07 | 2010-09-07 | Conductivity tester for objects |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201877046U true CN201877046U (en) | 2011-06-22 |
Family
ID=44164959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205252862U Expired - Fee Related CN201877046U (en) | 2010-09-07 | 2010-09-07 | Conductivity tester for objects |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201877046U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102013197A (en) * | 2010-09-07 | 2011-04-13 | 王国顺 | Tester for detecting conductivity of object |
-
2010
- 2010-09-07 CN CN2010205252862U patent/CN201877046U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102013197A (en) * | 2010-09-07 | 2011-04-13 | 王国顺 | Tester for detecting conductivity of object |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202949099U (en) | Portable low voltage electricity testing indicating plug | |
| CN102013197A (en) | Tester for detecting conductivity of object | |
| CN202794423U (en) | Simple wire on-off detection device | |
| CN201877046U (en) | Conductivity tester for objects | |
| CN203455445U (en) | Switchgear bushing withstand voltage test device | |
| CN201196666Y (en) | Power supply polarity discriminator | |
| CN208921814U (en) | Electric car harness switching detection device | |
| CN208443870U (en) | A kind of electric energy meter testing jig | |
| CN203837827U (en) | High temperature resistance wireless temperature sensor | |
| CN204086445U (en) | A kind of wire breakage detection device for cables | |
| CN208239582U (en) | A kind of PTC circuit test device | |
| CN202494714U (en) | Novel electroscope | |
| CN205982388U (en) | New forms of energy electric automobile uses novel shunt | |
| CN207114686U (en) | A kind of rack direct current reserves the test fixture of line | |
| CN207457276U (en) | Electric current split-core type meter with stretchable insulating bar | |
| CN207924008U (en) | A kind of electroscope with contact detection | |
| CN203191502U (en) | Test device for electric power cable | |
| CN204462188U (en) | 110kV mistaken collision preventing pulse flash positioning aloft Hi-pot test bar | |
| CN201352247Y (en) | Lead wire breakpoint quick surveymeter | |
| CN204314369U (en) | There is the test pencil of voltage digital detection and temperature acquisition function | |
| CN203909259U (en) | Calibration device with calibration box | |
| CN201955417U (en) | Rapid line inspector with LEDs (light-emitting diodes) | |
| CN205280863U (en) | A automatic testing keysets for cable | |
| CN204945257U (en) | A kind of electrical equipment pick-up unit | |
| CN204758736U (en) | Wire circuit leads to electric detection means |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110622 Termination date: 20120907 |