CN2414421Y - Universal electricity test pencil - Google Patents
Universal electricity test pencil Download PDFInfo
- Publication number
- CN2414421Y CN2414421Y CN 00213379 CN00213379U CN2414421Y CN 2414421 Y CN2414421 Y CN 2414421Y CN 00213379 CN00213379 CN 00213379 CN 00213379 U CN00213379 U CN 00213379U CN 2414421 Y CN2414421 Y CN 2414421Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- contact
- test
- digital display
- driving switch
- 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
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- Measuring Leads Or Probes (AREA)
Abstract
The utility model relates to an electricity test device, particularly to a universal electricity test pencil which is composed of a testing contact, a plastic casing and a hand touching electrode positioned in the casing. Because a digital display device is arranged in a contact electricity test circuit, the electricity of electrical equipment can be tested in a touching mode, the on-off of a circuit can be tested, induction electricity test in a near distance and a far distance for electrified equipment can be carried out, and the utility model has dual display functions for sound and light. When electricity is tested in a touching mode, the value of the voltage of a measured electrified body can be correctly displayed. The universal electricity test pencil can be used for measuring various kinds of electrical equipment.
Description
The utility model relates to electroscopic device, especially by test contact, plastic casing and be positioned at the omnipotent test pencil that the hand touched electrode on the shell is formed.
The common test pencil of Chu Shouing in the market, it is to be made of test contact, neon tube, current-limiting resistance, metal spring, shell and the hand touched electrode that is positioned on the shell, its test loop is formed by test contact, current-limiting resistance, neon tube, metal spring and hand touched electrode serial connection, this test pencil can only determine there is high voltage between tested electrified body and the earth, it is not obvious to exist the neon tube demonstration, and has only a kind of function of contact electrical verification; In addition, " omnipotent the test pencil " (patent No.: 97233281.2 that also has my invention, Granted publication number: CN2306513Y), this test pencil is by test contact, plastic casing and hand touched electrode constitute, and be provided with the contact electrical circuit inspection, closely respond to electrical circuit inspection, long distance induction electroscopy circuit, sensitivity adjustment circuit, acoustic luminous circuit is amplified in vibration, self-checking circuit, can be to tested electrified body contact electrical verification, break-make to circuit is tested, near to electrified body, the distance sensing electrical verification, but the test pencil of this structure is when the contact electrical verification, can only show measured result by lumination of light emitting diode, thus can't know tested electrified body numerical value with voltage.
The purpose of this utility model just is to overcome the deficiencies in the prior art, and provide a kind of can contact electrical verification, near, distance sensing electrical verification, check circuit on-off and can sound, the dual demonstration of light, to tested charged physical efficiency correctly know the test pencil of numerical value with voltage.
For achieving the above object, the utility model comprises test contact, plastic casing, is positioned at the hand touched electrode on the shell, the acoustic luminous circuit that vibrates, near, long distance induction electroscopy circuit, contact electrical circuit inspection, self-checking circuit, described test contact is connected 2 ends of digital display circuit piece (SXL) and current-limiting resistance (R with 1 end of the digital display circuit piece (SXL) that contacts electrical circuit inspection
1) an end be connected, 3 ends of digital display circuit piece (SXL) are connected current-limiting resistance (R with digital display screen (SXP)
1) the other end and the described divider resistance (R that closely responds to electrical circuit inspection
2) an end, 1 pin of integrated circuit block (IC) be connected divider resistance (R
2) the other end respectively with the stationary contact 2 of driving switch (K), the divider resistance (R of long distance induction electroscopy circuit
3) an end be connected, the moving contact 1 of driving switch (K) is connected with the negative pole of power supply (E), the divider resistance (R of long distance induction electroscopy circuit
3) the other end respectively with the stationary contact 2 of driving switch (K) attached help contact 2 ', 7 pin of stationary contact 3, integrated circuit block (IC) are connected.
The utility model is owing to be provided with numeric display unit in the contact electrical circuit inspection, and amplify acoustic luminous circuit to closely responding to electrical circuit inspection, long distance induction electroscopy circuit, vibration, self-checking circuit has been done further improvement, so can contact electrical verification to electrified body, break-make to circuit is tested,, distance sensing electrical verification near to electrified body, have sound, the dual Presentation Function of light, contact can correctly show during electrical verification tested electrified body numerical value with voltage.
Description of drawings:
Fig. 1 is a front view of the present utility model;
Fig. 2 is the upward view of Fig. 1;
Fig. 3 is circuit theory diagrams of the present utility model.
Below in conjunction with the drawings and specific embodiments the utility model is further described.
As shown in Figure 1, the test contact (T) with excellent conductive performance and physical strength is injection-moulded in the plastic casing head of lip pencil, and test contact (T) is made the screwdriver shape uses the double screwdriver of doing of test pencil.The link of test contact (T) stretches in the plastic casing, with the circuit contacts of installing in the housing.Hand touched electrode (N) is embedded in the afterbody of plastic casing, and the link of hand touched electrode (N) is positioned at the electrical circuit inspection contact of housing.Driving switch (K) is housed in the middle part of plastic casing, and driving switch (K) is respectively equipped with 0, I, II shelves, by stirring driving switch (K), can realize the switching of gear.
Shown in Fig. 2, digital display screen (SXP) adopts the common liquid crystals display screen, is flush-mounted on the plastic casing, and the display end of light emitting diode (LED) also is flush-mounted on the plastic casing.
In circuit theory diagrams shown in Figure 3, the contact electrical circuit inspection is by test contact (T), digital display circuit piece (SXL), digital display screen (SXP), current-limiting resistance (R
1), integrated circuit block (IC), hand touched electrode (N) form, when test contact (T) contact electrification body, digital display screen (SXP) can show the numerical value of the voltage of surveying; Closely respond to electrical circuit inspection by test contact (T), digital display circuit piece (SXL), current-limiting resistance (R
1), divider resistance (R
2), 1,2 pin of driving switch (K), integrated circuit block (IC) form, and can realize the closely induction electrical verification to tested electrified body; Long distance induction electroscopy circuit is by test contact (T), digital display circuit piece (SXL), current-limiting resistance (R
1), divider resistance (R
2), divider resistance (R
3), 1,2 pin of driving switch (K), integrated circuit block (IC) form, and can realize the distance sensing electrical verification to tested electrified body; Sounding, illuminating circuit 3,4,5,6 pin, the resistance (R by integrated circuit block (IC) amplified in vibration
4), (R
5), capacitor (C), triode (BG
2), hummer (FM), light emitting diode (LED) form, the electrical verification signal can be modulated in the oscillatory circuit and be amplified and make hummer (FM), light emitting diode (LED) sounding, luminous.Wherein test contact is connected with 1 end of the digital display circuit piece (SXL) that contacts electrical circuit inspection,
2 ends of digital display circuit piece (SXL) and current-limiting resistance (R
1) an end be connected, 3 ends of digital display circuit piece (SXL) are connected current-limiting resistance (R with digital display screen (SXP)
1) the other end and the described divider resistance (R that closely responds to electrical circuit inspection
2) an end, 1 pin of integrated circuit block (IC) be connected divider resistance (R
2) the other end respectively with the stationary contact 2 of driving switch (K), the divider resistance (R of long distance induction electroscopy circuit
3) an end be connected, the moving contact 1 of driving switch (K) is connected with the negative pole of power supply (E), the divider resistance (R of long distance induction electroscopy circuit
3) the other end respectively with the stationary contact 2 of driving switch (K) attached help contact 2 ', 7 pin of stationary contact 3, integrated circuit block (IC) are connected.It is identical that vibration amplification sounding, the illuminating circuit disclosed in the Chinese utility model patent instructions CN2306513Y that is carried in sounding, illuminating circuit and the prior art amplified in vibration, and this is repeated description not.
When test pencil was in off position, 2 pin of integrated circuit block (IC) are output signal not, triode (BG
2) be in state of saturation, oscillator is not worked, non-output signal.
When test pencil is carried out self check, touch the utmost point (N) with on the other hand contacting hand, another hand engaged test contact (T) makes the positive electrical human body of flowing through give the 1 pin input positive signal of integrated circuit block (IC), 2 pin of integrated circuit block (IC) have promptly been exported the signal that has amplified, and make triode (BG
2) become cut-off state by state of saturation, make oscillatory circuit vibration sounding.Just can carry out other test after having only proof test pencil itself working properly.
When needs contact electrical verification to tested electrified body, driving switch (K) is allocated to 0 gear puts, the tentacle touched electrode that catches (N) is with test contact (T) contact measured body, if measured body is charged, electric current can pass through test contact (T), digital display circuit piece (SXL), current-limiting resistance (R
1), 1,14 pin of integrated circuit block (IC), handle touched electrode (N) and human body and the earth and form the loop, make digital display screen (SXP) show measured voltage value.
When to remote electric equipment (as hi-line) when responding to electrical verification, then at first driving switch (K) being allocated to the II gear puts, the moving contact 1 of driving switch this moment (K) and stationary contact 2 attached help contact 2 ', stationary contact 3 is connected, connected power supply (E), hand touched electrode (N) on the stylus shell catches, with test contact (T) near measured body, when distance measured body position suitable, if measured body is charged, the electric field of measured body will be sensed on the test contact (T), and by digital display circuit piece (SXL), current-limiting resistance (R1) is added on 1 pin of integrated circuit block (IC), carry out signal and amplify, the signal after the amplification is given triode (BG by the 2 pin output of integrated circuit (IC)
1) input signal, triode (BG be provided
1) collector (c) will modulate 3,4,5,6 pin and the resistance (R of amplifying signal input ic piece (IC)
4), (R
5), in the oscillator formed of capacitor (C), the alternating signal of modulation is added to triode (BG
2) base stage (b) go up and signal amplified, the signal after the amplification is for hummer (FM) and light emitting diode (LED) sounding, luminous.
When closely responding to electrical verification when (as surveying lighting loop live wire, zero line), at first driving switch (K) is allocated to the I shelves, the moving contact 1 of driving switch this moment (K) and stationary contact 2 are connected, connected power supply (E), hand touched electrode (N) on the stylus shell catches, with test contact (T) near measured body, when if measured body is power firestreak, hummer (FM), light emitting diode (LED) sounding, luminous, its principle of work is the part electric field signal that is received by test contact (T), through divider resistance (R
2), driving switch (K) is to power supply (E) negative pole branch most of electric field signal that pours off, on 1 pin of remaining fraction signal ability input ic piece (IC), other principle is identical with distance sensing electrical verification principle, the signal remaining owing to shunted most of electric field signal is very weak, so the electrical verification distance nearby, thereby can distinguish AC power zero, live wire.
In the time will carrying out on off test to circuit, with contacting test line one end on the other hand, after the hand touched electrode (N) with the contact of another hand, the other end with test contact (T) test test line, when being path as test line, test pencil sounding, luminous, as test line when opening circuit, test pencil is noiseless, light shows that its principle of work is identical with the self check test principle.
Claims (1)
1, a kind of omnipotent test pencil, by test contact, plastic casing and be positioned at the hand touched electrode of shell, the acoustic luminous circuit that vibrates, near, long distance induction electroscopy circuit, contact electrical circuit inspection, self-checking circuit, it is characterized in that: test contact is connected 2 ends of digital display circuit piece (SXL) and current-limiting resistance (R with 1 end of the digital display circuit piece (SXL) that contacts electrical circuit inspection
1) an end be connected, 3 ends of digital display circuit piece (SXL) are connected current-limiting resistance (R with digital display screen (SXP)
1) the other end and the described divider resistance (R that closely responds to electrical circuit inspection
2) an end, 1 pin of integrated circuit block (IC) be connected divider resistance (R
2) the other end respectively with the stationary contact 2 of driving switch (K), the divider resistance (R of long distance induction electroscopy circuit
3) an end be connected, the moving contact 1 of driving switch (K) is connected with the negative pole of power supply (E), the divider resistance (R of long distance induction electroscopy circuit
3) the other end respectively with the stationary contact 2 of driving switch (K) attached help contact 2 ', 7 pin of stationary contact 3, integrated circuit block (IC) are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00213379 CN2414421Y (en) | 2000-01-28 | 2000-01-28 | Universal electricity test pencil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00213379 CN2414421Y (en) | 2000-01-28 | 2000-01-28 | Universal electricity test pencil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2414421Y true CN2414421Y (en) | 2001-01-10 |
Family
ID=33579684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00213379 Expired - Fee Related CN2414421Y (en) | 2000-01-28 | 2000-01-28 | Universal electricity test pencil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2414421Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102156239A (en) * | 2011-03-28 | 2011-08-17 | 宁波二十冶建设有限公司 | Multifunctional wire calibrator |
| CN102435824A (en) * | 2011-11-04 | 2012-05-02 | 天津市华电电力器材厂 | Capacitive low-voltage acoustic-optic electricity measurer |
-
2000
- 2000-01-28 CN CN 00213379 patent/CN2414421Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102156239A (en) * | 2011-03-28 | 2011-08-17 | 宁波二十冶建设有限公司 | Multifunctional wire calibrator |
| CN102156239B (en) * | 2011-03-28 | 2013-05-01 | 宁波二十冶建设有限公司 | Multifunctional wire calibrator |
| CN102435824A (en) * | 2011-11-04 | 2012-05-02 | 天津市华电电力器材厂 | Capacitive low-voltage acoustic-optic electricity measurer |
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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 |