CN201503480U - Online fast detector for transistors - Google Patents
Online fast detector for transistors Download PDFInfo
- Publication number
- CN201503480U CN201503480U CN2009200648659U CN200920064865U CN201503480U CN 201503480 U CN201503480 U CN 201503480U CN 2009200648659 U CN2009200648659 U CN 2009200648659U CN 200920064865 U CN200920064865 U CN 200920064865U CN 201503480 U CN201503480 U CN 201503480U
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- CN
- China
- Prior art keywords
- test
- circuit
- power supply
- test pencil
- 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 Of Individual Semiconductor Devices (AREA)
- Tests Of Electronic Circuits (AREA)
Abstract
An online fast detector for transistor comprises an outer casing, and is characterized in that a working circuit of the online fast detector consists of a direct current power supply, a four in-phase/four anti-phase pulse generator, a biasing circuit, an auxiliary power supply and a display circuit. When a test probe simultaneously contacts with corresponding electrodes of detected transistors to measure, a color-changing light emitting diode in a display circuit emits changeable colorful light, and then fair or foul and PNP and NPN types of the detected transistors can be detected by different lighting colors. The online fast detector for transistors is fast and convenient in online detection without detaching elements and is visual in display.
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,, generally all transistor to be pulled down from printed circuit board (PCB) and be measured for judging transistorized quality, 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
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.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 in the enclosure, on the panel, draw and respectively test 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, 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
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 |
|---|---|---|---|
| CN2009200648659U CN201503480U (en) | 2009-06-18 | 2009-06-18 | Online fast detector for transistors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200648659U CN201503480U (en) | 2009-06-18 | 2009-06-18 | Online fast detector for transistors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201503480U true CN201503480U (en) | 2010-06-09 |
Family
ID=42454412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200648659U Expired - Fee Related CN201503480U (en) | 2009-06-18 | 2009-06-18 | Online fast detector for transistors |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201503480U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103558540A (en) * | 2013-11-07 | 2014-02-05 | 周芸 | General tester for characteristics of diode and audion |
| US20230184814A1 (en) * | 2021-12-15 | 2023-06-15 | Grace Technologies, Inc. | Compact Combination Electrical Panel Safety Monitor and Test Point |
-
2009
- 2009-06-18 CN CN2009200648659U patent/CN201503480U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103558540A (en) * | 2013-11-07 | 2014-02-05 | 周芸 | General tester for characteristics of diode and audion |
| US20230184814A1 (en) * | 2021-12-15 | 2023-06-15 | Grace Technologies, Inc. | Compact Combination Electrical Panel Safety Monitor and Test Point |
| US11913979B2 (en) * | 2021-12-15 | 2024-02-27 | Grace Technologies, Inc | Compact combination electrical panel safety monitor and test point |
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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: 20100609 Termination date: 20120618 |