CN201789613U - Dynamic LED earphone circuit - Google Patents
Dynamic LED earphone circuit Download PDFInfo
- Publication number
- CN201789613U CN201789613U CN2010202893094U CN201020289309U CN201789613U CN 201789613 U CN201789613 U CN 201789613U CN 2010202893094 U CN2010202893094 U CN 2010202893094U CN 201020289309 U CN201020289309 U CN 201020289309U CN 201789613 U CN201789613 U CN 201789613U
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- triode
- driver
- pin
- resistance
- led
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Abstract
The utility model discloses a dynamic LED earphone circuit which is characterized by comprising an IC driver, wherein one pin of the IC driver is connected with three 3V batteries, one pin of the driver is grounded, one pin is connected with an inductor L1, a diode D1, a capacitor C2, a resistor R8 and a resistor R9; the circuit further comprises a triode Q1 and a triode Q2, the base of the triode Q1 is connected with a resistor R1, a resistor R2, a resistor R3 and a capacitor C1, the collector of the triode Q1 is connected with the base of the triode Q2, and the collector of the triode Q2 is connected with one pin of the IC driver; and the IC driver comprises an N channel field effect transistor, a control door and a comparer. The dynamic LED earphone circuit is powered by two 1.5V button cells, and the lines are simple and reliable and electromagnetic interference and radiation does not exist; and LED lamps twinkle with the rhythm of music and change with the volume of music.
Description
Technical field
The utility model relates to the dynamic head circuit of a kind of LED.
Background technology
Existing LED sound control technology such as charactron, display screen are used for public of relatively large stereo set and stage etc. more, by civil power or other more powerful power supply power supply, can not be used for battery powered individual small portable apparatus such as earphone.
Summary of the invention
The purpose of this utility model provides a kind of dynamic head circuit of LED that is used for battery powered individual small portable apparatus such as earphone.
The purpose of this utility model is achieved through the following technical solutions.
The dynamic head circuit of a kind of LED, it is characterized in that: described circuit comprises an IC driver, a pin of IC driver is connected with three 3V batteries, a pin ground connection, a pin connects inductance L 1, diode D1, capacitor C 2, resistance R 8 and resistance R 9; Circuit also comprises triode Q1 and triode Q2, and the base stage of triode Q1 is connected with capacitor C 1 with resistance R 1, resistance R 2, resistance R 3, and the collector electrode of triode Q1 is connected with the base stage of triode Q2, and the collector electrode of triode Q2 is connected with a pin of IC driver.
Described IC driver comprises N ditch Dao field effect transistor, control gate and comparator.
The utility model compared with prior art has the following advantages.
The dynamic head circuit of LED described in the utility model is by the button cell power supply of two 1.5V, and circuit is simple and reliable, no electromagnetic interference (EMI) emissions, and the LED lamp flashes with the rhythm of music, changes with the size of the volume of music.
Description of drawings
Fig. 1 is the structural representation of the dynamic head circuit of the utility model LED.
Embodiment
Below in conjunction with accompanying drawing the dynamic head circuit of the utility model LED is described in further detail.
As shown in Figure 1, the dynamic head circuit of LED described in the utility model comprises an IC driver, and a pin of IC driver is connected with the 3V battery, a pin ground connection, and a pin connects inductance L 1, diode D1, capacitor C 2, resistance R 8 and resistance R 9; Circuit also comprises triode Q1 and triode Q2, and the base stage of triode Q1 is connected with capacitor C 1 with resistance R 1, resistance R 2, resistance R 3, and the collector electrode of triode Q1 is connected with the base stage of triode Q2, and the collector electrode of triode Q2 is connected with a pin of IC driver.The IC driver comprises N ditch Dao field effect transistor, control gate and comparator.
Its operation principle is as follows:
The input of audio signal and amplification: left and right sides audio signal is from resistance R 1, R2 input, and through R3, C1 is coupled to the 2nd pin (base stage) of triode Q1; Amplify through the two-stage of triode Q1, Q2 again, make the amplitude of audio signal increase to certain degree, from the tripod output of Q2.
Led driver produces driving voltage: 4 pin that are input to IC from the audio signal of Q2 output.IC is a led driver, and its inside mainly is made up of three parts: NCOMFET (N ditch Dao field effect transistor), CONTROL LOGIC (control gate), AMP (comparator).Signal input IC 4 pin enter control gate and go to control the startup of field effect transistor and close, and field effect transistor produce the size of driving voltage.Voltage comparator compares voltage and the reference voltage that feeds back from load end, and comparative result is sent to control gate, adjusts output voltage.IC 5 pin connect the 3V power supply, 2 pin ground connection, and 3 pin connect feedback voltage, and 1 pin meets energy storage inductor L1, and outputting drive voltage.Outputting drive voltage divides two-way R8 through the D1 rectification after the C2 filtering, R9 goes driving LED.
Claims (2)
1. the dynamic head circuit of a LED, it is characterized in that: described circuit comprises an IC driver, a pin of IC driver is connected with the 3V battery, a pin ground connection, a pin connects inductance L 1, diode D1, capacitor C 2, resistance R 8 and resistance R 9; Circuit also comprises triode Q1 and triode Q2, and the base stage of triode Q1 is connected with capacitor C 1 with resistance R 1, resistance R 2, resistance R 3, and the collector electrode of triode Q1 is connected with the base stage of triode Q2, and the collector electrode of triode Q2 is connected with a pin of IC driver.
2. the dynamic head circuit of LED according to claim 1, it is characterized in that: described IC driver comprises N ditch Dao field effect transistor, control gate and comparator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202893094U CN201789613U (en) | 2010-08-11 | 2010-08-11 | Dynamic LED earphone circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202893094U CN201789613U (en) | 2010-08-11 | 2010-08-11 | Dynamic LED earphone circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201789613U true CN201789613U (en) | 2011-04-06 |
Family
ID=43821561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202893094U Expired - Fee Related CN201789613U (en) | 2010-08-11 | 2010-08-11 | Dynamic LED earphone circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201789613U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105100998A (en) * | 2015-09-01 | 2015-11-25 | 深圳第一蓝筹科技有限公司 | Headset flashing along with movement |
| CN105848026A (en) * | 2016-02-18 | 2016-08-10 | 乐视体育文化产业发展（北京）有限公司 | Earphone and method for processing data by the earphone |
-
2010
- 2010-08-11 CN CN2010202893094U patent/CN201789613U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105100998A (en) * | 2015-09-01 | 2015-11-25 | 深圳第一蓝筹科技有限公司 | Headset flashing along with movement |
| CN105848026A (en) * | 2016-02-18 | 2016-08-10 | 乐视体育文化产业发展（北京）有限公司 | Earphone and method for processing data by the earphone |
| WO2017140101A1 (en) * | 2016-02-18 | 2017-08-24 | 乐视控股（北京）有限公司 | Headphone and data processing method performed by headphone |
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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: 20110406 Termination date: 20130811 |