CN205176209U - Diode detector based on LED - Google Patents
Diode detector based on LED Download PDFInfo
- Publication number
- CN205176209U CN205176209U CN201520930600.8U CN201520930600U CN205176209U CN 205176209 U CN205176209 U CN 205176209U CN 201520930600 U CN201520930600 U CN 201520930600U CN 205176209 U CN205176209 U CN 205176209U
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Abstract
The utility model discloses a diode detector based on LED, including not gate U1, diode D1, electric capacity C2 and power VCC, not gate U1's input connecting resistance R2, resistance R2's other end connecting resistance R1 and electric capacity C1, not gate U1's output and not gate U2's input are connected to resistance R1's the other end, and not gate U3's input, not gate U4's input, not gate U5's input, not gate U6's input and electric capacity C1's the other end are connected to not gate U2's output. The utility model discloses diode detector based on LED simple structure, components and parts are few, utilize logic gate chip and LED to form detection module, and can be fast convenient measuring goes out the polarity and the quality of diode, has convenient to use, advantage that the cost of manufacture is hanged down.
Description
Technical field
The utility model relates to a kind of detecting device, specifically a kind of LED-based diode detector.
Background technology
Diode is one of modal base components of power electronics industry, before use or test diode parameter, first tackles diode and carries out integrity screening, to weed out the invalid diode of those open circuits or short circuit.Traditional method uses multimeter to detect or with the bigness scale of transistor graphic instrument, no matter be all very time taking with universal electric meter bigness scale or with the bigness scale of transistor graphic instrument, because all one-time detection must be carried out respectively to its forward reverse resistance, also usually be tired of the polarity failing to understand pipe in diagnostic criterium, be unfavorable for energy-conserving and environment-protective, and these detection methods are easy to cause misjudgment, cause the waste of diode material, therefore need to be improved.
Utility model content
The purpose of this utility model is to provide a kind of LED-based diode detector, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of LED-based diode detector, comprise not gate U1, diode D1, electric capacity C2 and power supply VCC, the input end contact resistance R2 of described not gate U1, the other end contact resistance R1 of resistance R2 and electric capacity C1, the other end of resistance R1 connects the output terminal of not gate U1 and the input end of not gate U2, the output terminal of not gate U2 connects the input end of not gate U3, the input end of not gate U4, the input end of not gate U5, the input end of not gate U6 and the other end of electric capacity C1, the output terminal of not gate U3 connects the output terminal of not gate U4, the output terminal of not gate U5, the output terminal of not gate U6 and electric capacity C2, the other end contact resistance R3 of electric capacity C2, the anode of diode D2 and the negative electrode of diode D1, the negative electrode of diode D2 connects the anode of diode A to be measured and diode D1.
As preferred version of the present utility model: described diode D1 is green light LED.
As preferred version of the present utility model: described diode D2 is red-light LED.
Compared with prior art, the beneficial effects of the utility model are: the utility model LED-based diode detector structure is simple, components and parts are few, logic gate chip and LED is utilized to form detection module, polarity and the quality of diode can be detected quickly and easily, have easy to use, the advantage that cost of manufacture is low.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of LED-based diode detector.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, a kind of LED-based diode detector, comprise not gate U1, diode D1, electric capacity C2 and power supply VCC, the input end contact resistance R2 of described not gate U1, the other end contact resistance R1 of resistance R2 and electric capacity C1, the other end of resistance R1 connects the output terminal of not gate U1 and the input end of not gate U2, the output terminal of not gate U2 connects the input end of not gate U3, the input end of not gate U4, the input end of not gate U5, the input end of not gate U6 and the other end of electric capacity C1, the output terminal of not gate U3 connects the output terminal of not gate U4, the output terminal of not gate U5, the output terminal of not gate U6 and electric capacity C2, the other end contact resistance R3 of electric capacity C2, the anode of diode D2 and the negative electrode of diode D1, the negative electrode of diode D2 connects the anode of diode A to be measured and diode D1.
Diode D1 is green light LED.Diode D2 is red-light LED.
Principle of work of the present utility model is: the not gate U1 in circuit and not gate U2 forms ultralow-frequency oscillator (frequency is about 3Hz ~ 5Hz), and not gate U3 ~ U6 is together in parallel, composition power amplifier.By output coupling capacitor C2, by output waveform, the interchange become containing positive and negative two half cycles exports again, no matter so that when testing measured diode assign polarity, all can have a kind of glow color to indicate.When diode A positive pole to be measured is at upper insertion instrument connection, red light-emitting diode D2 conducting is luminous, and when diode A negative pole to be measured is at upper insertion instrument connection, green light LED D1 conducting is luminous.If diode to be measured is open circuit, then diode D1 and diode D2 is all not luminous; If diode to be measured is short circuit, then there is the alternately change of red green color in color-changing diode.
Claims (3)
1. a LED-based diode detector, comprise not gate U1, diode D1, electric capacity C2 and power supply VCC, it is characterized in that, the input end contact resistance R2 of described not gate U1, the other end contact resistance R1 of resistance R2 and electric capacity C1, the other end of resistance R1 connects the output terminal of not gate U1 and the input end of not gate U2, the output terminal of not gate U2 connects the input end of not gate U3, the input end of not gate U4, the input end of not gate U5, the input end of not gate U6 and the other end of electric capacity C1, the output terminal of not gate U3 connects the output terminal of not gate U4, the output terminal of not gate U5, the output terminal of not gate U6 and electric capacity C2, the other end contact resistance R3 of electric capacity C2, the anode of diode D2 and the negative electrode of diode D1, the negative electrode of diode D2 connects the anode of diode A to be measured and diode D1.
2. according to the LED-based diode detector of one according to claim 1, it is characterized in that, described diode D1 is green light LED.
3. according to the LED-based diode detector of one according to claim 1, it is characterized in that, described diode D2 is red-light LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520930600.8U CN205176209U (en) | 2015-11-19 | 2015-11-19 | Diode detector based on LED |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520930600.8U CN205176209U (en) | 2015-11-19 | 2015-11-19 | Diode detector based on LED |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205176209U true CN205176209U (en) | 2016-04-20 |
Family
ID=55740185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520930600.8U Expired - Fee Related CN205176209U (en) | 2015-11-19 | 2015-11-19 | Diode detector based on LED |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205176209U (en) |
-
2015
- 2015-11-19 CN CN201520930600.8U patent/CN205176209U/en not_active Expired - Fee Related
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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: 20160420 Termination date: 20161119 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |