CN208126707U - A kind of instructional device of sound controlled LED light brightness - Google Patents
A kind of instructional device of sound controlled LED light brightness Download PDFInfo
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- CN208126707U CN208126707U CN201820673277.4U CN201820673277U CN208126707U CN 208126707 U CN208126707 U CN 208126707U CN 201820673277 U CN201820673277 U CN 201820673277U CN 208126707 U CN208126707 U CN 208126707U
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- led light
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- light brightness
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Abstract
The utility model provides a kind of instructional device of sound controlled LED light brightness, the circuit of the device is mainly by amplification module and constant-current source module composition, voice signal is converted to voltage signal through microphone, again through amplification, rectification and filtering, and constant current source module is controlled, and then realize the function of sound control LED light brightness.The present apparatus is applied to the experimental teaching of the integrated operational amplifier circuit in Electron Technique Course, can make experiment that there is good interactivity, is easy excitation student through the working principle of experimental phenomena thinking circuit, thus Promoting Experimental Teaching effect.
Description
Technical field
The utility model relates to a kind of instructional device, especially a kind of instructional device of sound controlled LED light brightness belongs to electronics
Technical field.
Background technique
In electronics curriculum, integrated operational amplifier circuit is frequently used for composition amplifier circuit and constant-current source electricity
Road, for proof theory, school independently carries out replication experiment mostly, since its single replication experiment circuit lacks entertaining
Property, it is easy to cause students ' interest of study insufficient, influences teaching efficiency.Some functional and interaction is had both therefore, it is necessary to design
Property instructional device pass through the brightness of sound control LED light for example, design a kind of instructional device using integrated operational amplifier circuit, increase
Add experiment interactive, confirmatory experiment originally dry as dust is made to become interesting, attracts student through the work of phenomenon thinking circuit
Principle, thus Promoting Experimental Teaching effect.
Utility model content
The purpose of the utility model is to provide a kind of instructional devices of sound controlled LED light brightness, pass through sound control LED light
Brightness attracts student through the working principle of phenomenon thinking integrated operational amplifier circuit, thus Promoting Experimental Teaching effect.
The specific technical solution that the utility model is taken is as follows：
A kind of instructional device of sound controlled LED light brightness, it is characterized in that：The circuit of the device includes LM358 double operational U1, stays
Electret microphone MIC1, resistance R1~R7, potentiometer RV1, capacitor C1 and C2, triode Q1, diode D1 and light emitting diode
LED1, wherein one end of one end of the positive connecting resistance R1 of Electret condenser microphone MIC1 and capacitor C1, another termination of resistance R1+
The cathode of 5V, Electret condenser microphone MIC1 are grounded；8 feet of double operational U1 meet+5V, and 4 feet connect -5V, one end of 3 foot connecting resistance R2 and electricity
Hold the other end of C1, one end of 2 foot connecting resistance R3 and a fixing end of potentiometer RV1,1 foot connect the anode of diode D1, current potential
Another fixing end and sliding end of device RV1, the other end of resistance R2 and the other end ground connection of resistance R3；5 feet of double operational U1 connect
The cathode of diode D1, one end of capacitor C2 and resistance R4 one end, one end of 6 foot connecting resistance R6 and the transmitting of triode Q1
Pole, one end of 7 foot connecting resistance R5, the other end ground connection of resistance R6；The other end of the base stage connecting resistance R5 of triode Q1, collector
The cathode of sending and receiving optical diode LED1 and the one end resistance R7, the anode of Light-emitting diode LED 1 and another termination+5V of resistance R7.
The beneficial effects of the utility model are：The utility model provides a kind of instructional device of sound controlled LED light brightness, real
The function of existing sound control LED light brightness, is applied to the experimental teaching of the integrated operational amplifier circuit of Electron Technique Course, can be with
So that experimental teaching is become interesting, be easy the working principle for attracting student through experimental phenomena thinking circuit, to promote experiment religion
Study effect.
Detailed description of the invention
Fig. 1 is the circuit diagram of the utility model.
Specific embodiment
The utility model is described further with reference to the accompanying drawing.
As shown in Figure 1, a kind of instructional device of sound controlled LED light brightness, the circuit of the device include LM358 double operational U1,
Electret condenser microphone MIC1, resistance R1~R7, potentiometer RV1, capacitor C1 and C2, triode Q1, diode D1 and light emitting diode
LED1, wherein one end of one end of the positive connecting resistance R1 of Electret condenser microphone MIC1 and capacitor C1, another termination of resistance R1+
The cathode of 5V, Electret condenser microphone MIC1 are grounded；8 feet of double operational U1 meet+5V, and 4 feet connect -5V, one end of 3 foot connecting resistance R2 and electricity
Hold the other end of C1, one end of 2 foot connecting resistance R3 and a fixing end of potentiometer RV1,1 foot connect the anode of diode D1, current potential
Another fixing end and sliding end of device RV1, the other end of resistance R2 and the other end ground connection of resistance R3；5 feet of double operational U1 connect
The cathode of diode D1, one end of capacitor C2 and resistance R4 one end, one end of 6 foot connecting resistance R6 and the transmitting of triode Q1
Pole, one end of 7 foot connecting resistance R5, the other end ground connection of resistance R6；The other end of the base stage connecting resistance R5 of triode Q1, collector
The cathode of sending and receiving optical diode LED1 and the one end resistance R7, the anode of Light-emitting diode LED 1 and another termination+5V of resistance R7.
In the circuit of the present apparatus, two amplifiers A and B are provided by LM358 double operational U1, form positive Phase Proportion with amplifier A
Amplification module forms constant current source module with amplifier B, and Electret condenser microphone MIC1 converts sound into voltage signal, via amplifier A group
At positive ratio enlargement module amplification, then through diode D1 rectification and capacitor C2 filter, take the voltage on capacitor C2 to go to control
The constant current source module of amplifier B composition realizes that the brightness for the Light-emitting diode LED 1 for being serially connected in constant current source module output end follows
Voltage on capacitor C2 and change, since the voltage at the both ends capacitor C2 is proportional to the size that Electret condenser microphone MIC1 picks up sound,
And then realize the function of sound control LED light brightness.
Claims (1)
1. a kind of instructional device of sound controlled LED light brightness, it is characterized in that：The circuit of the device includes LM358 double operational U1, electret
Body microphone MIC1, resistance R1~R7, potentiometer RV1, capacitor C1 and C2, triode Q1, diode D1 and Light-emitting diode LED 1,
Wherein one end of one end of the positive connecting resistance R1 of Electret condenser microphone MIC1 and capacitor C1, another termination+5V of resistance R1, electret
The cathode of body microphone MIC1 is grounded；8 feet of double operational U1 meet+5V, and 4 feet meet -5V, one end of 3 foot connecting resistance R2 and capacitor C1's
The other end, one end of 2 foot connecting resistance R3 and a fixing end of potentiometer RV1,1 foot connect the anode of diode D1, potentiometer RV1
Another fixing end and sliding end, the other end of resistance R2 and the other end ground connection of resistance R3；5 feet of double operational U1 meet diode D1
Cathode, one end of capacitor C2 and one end of resistance R4, one end of 6 foot connecting resistance R6 and the emitter of triode Q1,7 feet connect electricity
Hinder one end of R5, the other end ground connection of resistance R6；The other end of the base stage connecting resistance R5 of triode Q1, collector connect light-emitting diodes
The cathode of pipe LED1 and the one end resistance R7, the anode of Light-emitting diode LED 1 and another termination+5V of resistance R7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820673277.4U CN208126707U (en) | 2018-05-03 | 2018-05-03 | A kind of instructional device of sound controlled LED light brightness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820673277.4U CN208126707U (en) | 2018-05-03 | 2018-05-03 | A kind of instructional device of sound controlled LED light brightness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208126707U true CN208126707U (en) | 2018-11-20 |
Family
ID=64184724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820673277.4U Expired - Fee Related CN208126707U (en) | 2018-05-03 | 2018-05-03 | A kind of instructional device of sound controlled LED light brightness |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208126707U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111179705A (en) * | 2020-01-09 | 2020-05-19 | 北京中诚博睿教育科技有限公司 | Electronic music fountain intelligence-developing teaching aid for children |
-
2018
- 2018-05-03 CN CN201820673277.4U patent/CN208126707U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111179705A (en) * | 2020-01-09 | 2020-05-19 | 北京中诚博睿教育科技有限公司 | Electronic music fountain intelligence-developing teaching aid for children |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181120 Termination date: 20200503 |
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| CF01 | Termination of patent right due to non-payment of annual fee |