CN201935983U - Online quick detector of transistor - Google Patents
Online quick detector of transistor Download PDFInfo
- Publication number
- CN201935983U CN201935983U CN 201020621562 CN201020621562U CN201935983U CN 201935983 U CN201935983 U CN 201935983U CN 201020621562 CN201020621562 CN 201020621562 CN 201020621562 U CN201020621562 U CN 201020621562U CN 201935983 U CN201935983 U CN 201935983U
- Authority
- CN
- China
- Prior art keywords
- test
- circuit
- transistor
- power supply
- test pencil
- 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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- Testing Electric Properties And Detecting Electric Faults (AREA)
- Tests Of Electronic Circuits (AREA)
- Testing Of Individual Semiconductor Devices (AREA)
Abstract
The utility model discloses an online quick detector of a transistor. The detector comprises a shell and is characterized in that a working circuit of the detector consists of a direct-current power supply, a four-inphase/four-reversed phase pulse generator, a biasing circuit, an auxiliary power supply and a display circuit. When a tester pen contacts corresponding electrodes of a transistor to be detected at the same time respectively, a colour-changing light-emitting diode in the display circuit emits changed colour light, and then whether the transistor to be detected is broken or not and whether the transistor to be detected is a PNP type or an NPN type are detected according to different light colours. Elements are not required to be detached; online detection is quickly performed; the transistor is convenient to detect on line; and display is intuitive.
Description
Technical field
The utility model relates to a kind of measurement mechanism, particularly a kind of transistor on-line quick detection instrument.
Background technology
At present, in maintenance electronic product process, for judging transistorized quality, one all will be pulled down transistor and measure from printed circuit board (PCB), very inconvenient, and easily with element, circuit board damage.
Summary of the invention
The purpose of this utility model is in order to overcome above-mentioned weak point, and provides a kind of the need that element is pulled down, and directly measures on circuit board, detects transistor on-line quick detection instrument fast, easily.
The purpose of this utility model is achieved in that transistor on-line quick detection instrument comprises shell, it is characterized in that its operating circuit is made up of direct supply, four homophases/four rp pulse generators, biasing circuit, accessory power supply, display circuit.Four homophases/four rp pulse generators produce complementary square wave pulse voltage and export biasing circuit under the driving of direct supply, after the biasing circuit dividing potential drop, export base stage test test pencil respectively to, accessory power supply, through the accessory power supply pressure limiting, export collector test test pencil after the voltage stabilizing respectively to, display circuit, emitter test test pencil connecting circuit earth terminal, when the test test pencil contacts the measured tube respective electrode simultaneously respectively and measures, variable color light emitting diode two pole tensions send the color light of variation by the output voltage adjusting of accessory power supply in the display circuit, detect tested transistorized quality, PNP according to different glow colors, the NPN type.Each electronic component is installed in the enclosure, on the panel, draw and respectively test test pencil.
The utility model does not need element is pulled down owing to adopt above design, as long as with the straight respective electrode that connects on the contact circuit plate of test chart, can detect transistorized quality and type according to the luminous demonstration of different colours, and intuitive display detects fast, convenient.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model operating circuit block scheme;
Fig. 3 is the utility model operating circuit circuit diagram.
Embodiment
Now illustrated embodiment is made detailed description to the utility model in conjunction with the accompanying drawings.
As Fig. 2, shown in Figure 3, four homophases/four rp pulse generator II are that core is formed with CC4041 pulse producer ic chip, wherein 1 of IC, 3,6,8 pin and connecting resistance R
2One end, IC 2,4 pin and connecting resistance R
1One end, IC 5,7 pin also meet capacitor C
1One end, emitter test test pencil e are circuit ground end, R
1, R
2The other end also meets C
1The other end, the accumulator E serial connection power switch K of direct supply I
1After, its positive and negative end connects the power input V of IC respectively
DD, V
SSBiasing circuit III is by resistance R
3, R
4Form R
3, R
4An end and meet IC 8 pin, R
3The other end connects base stage test test pencil b.Accessory power supply IV is by diode D
1-D
6, silicone tube, germanium tube switch K
2Form, wherein D
1-D
3, D
4-D
5After being connected in series successively respectively, D
1Negative pole, D
4Positive pole also meets collector test test pencil C, D
3Anodal, D
6Negative pole also meets R
4The other end, D
1, D
2, D
4, D
5Serial connection point and meet K
2The silicone tube test contact, D
2, D
3, D
5, D
6Serial connection point and meet K
2Fixed contact.Display circuit V is made up of the variable color LED, and the two ends of LED connect D respectively
6Negative pole, emitter test test pencil e.Each electronic component is installed in the enclosure, on the panel, draw and respectively test test pencil.
The principle of work of this transistor on-line quick detection instrument is as follows: as shown in Figure 3, when measured tube was positive-negative-positive, pipe ended, and terminal potential height on the variable color LED, terminal potential is low down, glowed; When measured tube is the NPN type, pipe conducting, low, the following terminal potential height of terminal potential on the diode (LED), green light; When the ce of measured tube open circuit or PN junction short circuit, open circuit, because the regulating action of complementary square wave pulse voltage, the conversion and to send red, green complex light orange repeatedly of the current potential at diode (LED) two ends; When the ce of measured tube short circuit, diode (LED) is by short circuit and not luminous, thereby can make things convenient for, detect intuitively quality, the type of measured tube.
Claims (2)
1. transistor on-line quick detection instrument, comprise shell, the operating circuit that it is characterized in that it is by direct supply (I), four homophases/four rp pulse generators (II), biasing circuit (III), accessory power supply (IV), display circuit (V) is formed, four homophases/four rp pulse generators (II) produce complementary square wave pulse voltage and export biasing circuit (III) under the driving of direct supply (I), after biasing circuit (III) dividing potential drop, export base stage test test pencil respectively to, accessory power supply (IV), through accessory power supply (IV) pressure limiting, export collector test test pencil after the voltage stabilizing respectively to, display circuit (V), emitter test test pencil connecting circuit earth terminal, when the test test pencil contacts the measured tube respective electrode simultaneously respectively and measures, variable color light emitting diode two pole tensions send the color light of variation by the output voltage adjusting of accessory power supply (IV) in the display circuit (V), each electronic component is installed on the shell wainscot, draws and respectively tests test pencil.
2. transistor on-line quick detection instrument as claimed in claim 1 is characterized in that four homophases/four rp pulse generators (II) are that core is formed with CC4041 pulse producer ic chip, wherein 1 of IC, 3,6,8 pin and connecting resistance R
2One end, IC 2,4 pin and connecting resistance R
1One end, IC5,7 pin also meet capacitor C
1One end, emitter test test pencil e are circuit ground end, R
1, R
2The other end also meets C
1The other end, the accumulator E serial connection power switch K of direct supply (I)
1After, its positive and negative end connects the power input V of IC respectively
DD, V
Ss, biasing circuit (III) is by resistance R
3, R
4Form R
3, R
4An end and meet IC 8 pin, R
3The other end connects base stage test test pencil b, and accessory power supply (IV) is by diode D
1-D
6, silicone tube, germanium tube switch K
2Form, wherein D
1-D
3, D
4-D
6After being connected in series successively respectively, D
1Negative pole, D
4Positive pole also meets collector test test pencil C, D
3Anodal, D
6Negative pole also meets R
4The other end, D
1, D
2, D
4, D
5Serial connection point and meet K
2The silicone tube test contact, D
2, D
3, D
5, D
6Serial connection point and meet K
2Fixed contact, display circuit (V) is made up of the variable color LED, and the two ends of LED connect D respectively
6Negative pole, emitter test test pencil e.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020621562 CN201935983U (en) | 2010-11-23 | 2010-11-23 | Online quick detector of transistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020621562 CN201935983U (en) | 2010-11-23 | 2010-11-23 | Online quick detector of transistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201935983U true CN201935983U (en) | 2011-08-17 |
Family
ID=44447501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020621562 Expired - Fee Related CN201935983U (en) | 2010-11-23 | 2010-11-23 | Online quick detector of transistor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201935983U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103064004A (en) * | 2012-12-17 | 2013-04-24 | 深圳深爱半导体股份有限公司 | Chip-level testing device |
| CN103558540A (en) * | 2013-11-07 | 2014-02-05 | 周芸 | General tester for characteristics of diode and audion |
-
2010
- 2010-11-23 CN CN 201020621562 patent/CN201935983U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103064004A (en) * | 2012-12-17 | 2013-04-24 | 深圳深爱半导体股份有限公司 | Chip-level testing device |
| CN103558540A (en) * | 2013-11-07 | 2014-02-05 | 周芸 | General tester for characteristics of diode and audion |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110817 Termination date: 20151123 |