CN201196673Y - Multifunctional DC pen - Google Patents
Multifunctional DC pen Download PDFInfo
- Publication number
- CN201196673Y CN201196673Y CNU2008200224553U CN200820022455U CN201196673Y CN 201196673 Y CN201196673 Y CN 201196673Y CN U2008200224553 U CNU2008200224553 U CN U2008200224553U CN 200820022455 U CN200820022455 U CN 200820022455U CN 201196673 Y CN201196673 Y CN 201196673Y
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- Prior art keywords
- diode
- circuit
- emitting diode
- series
- light emitting
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- Expired - Fee Related
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Abstract
The utility model relates to a detector under the work environment of direct current. The detector adopts the technical proposal that the detector comprises detecting probes, a shell and circuits which are arranged inside the shell, and is characterized in that the circuits are as follows: a luminous indicating circuit is formed by a light-emitting diode LED1 and a light-emitting diode LED2 which are connected in parallel with each other in the positive direction and the reverse direction and then connected in series with a resistor R1; each bridge type current-oriented gate circuit is formed by series connection of a diode D1, a diode D2, a diode D3, a diode D4 and a constant voltage diode DW1; a sound prompt circuit is formed by connection of a base electrode of a triode BG and a resistor R3 and connection of a collector electrode and a buzzer L; and a lighting circuit is formed by series connection of a light-emitting diode LED3, a resistor R2 and a button AN2; a DC refers to a built-in direct-current supply; and the two detecting probes A and B are arranged between the bridge type current-oriented gate circuits. The detector has the advantages of wide detection range, capability of discriminating the polarity of the power supply, on-off detection, synchronous acoustooptic indication, lighting function, simple structure and convenient use.
Description
Technical field
The utility model relates to the testing tool in a kind of direct current working environment.
Background technology
The application of direct current in life now is very extensive, for example; Motor vehicle repair assembling industry, electric motor car, various lathes, household electrical appliances, Industry Control, the maintenance of industries such as electronics and detection.Main instrument is various multimeters now, carries all inconveniences of operation, owing to use occasion and environmental limit, presses for a kind of testing tool of easy sensitivity.
The utility model content
The utility model is exactly the defective that exists at prior art, provides that a kind of to have sensing range wide, can distinguish electric power polarity, and the break-make road is detected, and acousto-optic is indicated synchronously, has the multi-functional direct current electroprobe of illumination functions.
Its technical scheme is: comprise detector probe, housing and the device circuit in housing, it is characterized in that described circuit is: two LEDs 1, the forward and reverse backs in parallel of LED2 are composed in series luminous indicating circuit with resistance R 1; Diode D1, D2, D3 and D4 and voltage stabilizing diode DW1 are composed in series bridge-type current oriention gate circuit; The base stage of triode BG connects resistance R 3, collector connects hummer L, button AN1 and forms auditory tone cues electric circuit; Light emitting diode and resistance R 2 and button AN2 are composed in series lighting circuit; DC is built-in direct supply; Two detector probe A and B are located between the bridge-type current oriention gate circuit.
Two LEDs 1, LED2 adopt the light emitting diode of different colors; Light emitting diode in the lighting circuit is to be composed in parallel by a plurality of.
The utlity model has that to have sensing range wide, can distinguish electric power polarity, the break-make road is detected, and acousto-optic is indicated synchronously, has illumination functions, and simple in structure, and is easy to use.
Description of drawings
Accompanying drawing is the circuit theory diagrams of a kind of embodiment.L is a hummer among the figure; DC is built-in direct supply; AN2 is a lighting button; AN1 is a test break-make button; A, B are test lead (detector probe).
Embodiment
Be further described with regard to its circuit composition and principle of work below in conjunction with accompanying drawing:
Be composed in series power supply light indicating circuit with resistance R 1 after LED 1, the LED2 parallel connection; Diode D1, D2, D3 and diode D4 and voltage stabilizing diode DW1 are composed in series bridge-type current oriention gate circuit; Resistance R 3 connects triode BG base stage, triode BG collector connects hummer L, button AN1 and forms auditory tone cues electric circuit; LED 3 is composed in series lighting circuit with resistance R 2 and button AN2; DC is built-in direct supply;
Principle of work: when A end connects the positive pole of tested power supply, when the B end connected the negative pole of tested power supply, its power supply was flowed through power supply light indicating circuit that LED 1 and resistance R 1 be composed in series and is made LED 1 luminous indication positive polarity; Positive source is through diode D2, resistance R 3 trigger triode BG conductings, and built-in direct supply DC provides power supply and sounding for hummer L through triode BG.
When B end connects the positive pole of tested power supply, when the A end connected the negative pole of tested power supply, its power supply was flowed through power supply light indicating circuit that LED 2 and resistance R 1 be composed in series and is made LED 2 luminous indication negative polarity; Positive source is through diode D4, voltage stabilizing diode DW1 and resistance R 3 trigger triode BG conductings, and built-in direct supply DC provides power supply and sounding for hummer L through triode BG.
During the test break-make, A, B two ends connect tested lead, press the button AN1, because the voltage stabilizing value of voltage stabilizing diode DW1 is higher than the voltage of built-in direct supply DC so end, this moment built-in direct supply DC voltage must pass through lead between A, B after, through diode D2 and resistance R 3 trigger triode BG conducting hummer L sounding, the conductive paths between A, B is described, otherwise the lead between A, B is obstructed again.
Claims (2)
1. a multi-functional direct current electroprobe comprises detector probe, housing and the device circuit in housing, it is characterized in that described circuit is: the forward and reverse back in parallel of two light emitting diodes (LED1, LED2) is composed in series luminous indicating circuit with resistance (R1); Diode (D1, D2, D3 and D4) is composed in series bridge-type current oriention gate circuit with voltage stabilizing diode (DW1); The base stage of triode (BG) connects resistance (R3), collector connects hummer (L), button (AN1) composition auditory tone cues electric circuit; Light emitting diode and resistance (R2) and button (AN2) are composed in series lighting circuit; DC is built-in direct supply; Two detector probe (A and B) are located between the bridge-type current oriention gate circuit.
2. multi-functional direct current electroprobe according to claim 1 is characterized in that: two light emitting diodes (LED1, LED2) adopt the light emitting diode of different colors; Light emitting diode in the lighting circuit is to be composed in parallel by a plurality of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200224553U CN201196673Y (en) | 2008-05-15 | 2008-05-15 | Multifunctional DC pen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200224553U CN201196673Y (en) | 2008-05-15 | 2008-05-15 | Multifunctional DC pen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201196673Y true CN201196673Y (en) | 2009-02-18 |
Family
ID=40416308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200224553U Expired - Fee Related CN201196673Y (en) | 2008-05-15 | 2008-05-15 | Multifunctional DC pen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201196673Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102854436A (en) * | 2011-06-27 | 2013-01-02 | 海洋王照明科技股份有限公司 | Power polarity detection circuit |
| CN104459443A (en) * | 2014-12-12 | 2015-03-25 | 黄宇嵩 | Home decoration circuit performance detection device |
| CN109994881A (en) * | 2019-04-23 | 2019-07-09 | 徐州重型机械有限公司 | Harness unit |
| CN110261717A (en) * | 2019-07-15 | 2019-09-20 | 立讯精密工业（滁州）有限公司 | A kind of connector assembly test circuit and its test method |
-
2008
- 2008-05-15 CN CNU2008200224553U patent/CN201196673Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102854436A (en) * | 2011-06-27 | 2013-01-02 | 海洋王照明科技股份有限公司 | Power polarity detection circuit |
| CN104459443A (en) * | 2014-12-12 | 2015-03-25 | 黄宇嵩 | Home decoration circuit performance detection device |
| CN109994881A (en) * | 2019-04-23 | 2019-07-09 | 徐州重型机械有限公司 | Harness unit |
| CN110261717A (en) * | 2019-07-15 | 2019-09-20 | 立讯精密工业（滁州）有限公司 | A kind of connector assembly test circuit and its test method |
| CN110261717B (en) * | 2019-07-15 | 2022-01-28 | 立讯精密工业（滁州）有限公司 | Connector assembly test circuit and test method thereof |
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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: 20090218 Termination date: 20100515 |