CN203134178U - A music electronic acousto-optic metronome used in child teaching - Google Patents
A music electronic acousto-optic metronome used in child teaching Download PDFInfo
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- CN203134178U CN203134178U CN 201320180037 CN201320180037U CN203134178U CN 203134178 U CN203134178 U CN 203134178U CN 201320180037 CN201320180037 CN 201320180037 CN 201320180037 U CN201320180037 U CN 201320180037U CN 203134178 U CN203134178 U CN 203134178U
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- resistance
- triode
- optic
- metronome
- music electronic
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Abstract
Provided is a music electronic acousto-optic metronome used in child teaching. The music electronic acousto-optic metronome comprises a battery, a switch, a first capacitor, a second capacitor, resistors from the first to the fifth, triodes from the first to the thirty third, a loudspeaker, and a light emitting diode. Compared with a product in the prior art, the music electronic acousto-optic metronome has advantages of reasonable design, simple structure, easy manipulation and maintenance, low cost, and a capability of achieving multi-shift control. The music electronic acousto-optic metronome has a large application range and is especially suitable for the study of infants and children.
Description
Technical field
The utility model relates to a kind of metronome for music teaching, is specifically related to a kind of child teaching music electronic acousto-optic metronome.
Background technology
In the study of music and teaching, particularly in child and the child teaching, the sense of learner's accuracy in pitch, timing are very important, but speed sense can not ignore equally, can cultivate the speed concept just need be by means of metronome.Defectives such as existing electronic type metronome has complex structure, it is loaded down with trivial details to safeguard, price height are unfavorable for child and children especially to the grasp study of speed and beat, and use has inconvenience more.
The utility model content
The purpose of this utility model is exactly the defective that exists at prior art, and a kind of child teaching music electronic acousto-optic metronome is provided.
Its technical scheme is: be made up of battery, switch, first electric capacity, second electric capacity, first to the 5th resistance, first to the 3rd triode, loudspeaker and light emitting diode.The positive pole of described battery is by the positive pole of switch and first electric capacity, one end of first resistance, one end of second resistance, one end of loudspeaker and an end of the 5th resistance are connected, the other end of first resistance is connected with the base stage anodal and first triode of second electric capacity, the other end of second resistance is connected with the collector of first triode and the base stage of second triode, the emitter of first triode is connected with the emitter of second triode and an end of the 3rd resistance, the other end of loudspeaker is connected with the collector of second triode and an end of the 4th resistance, the other end of the 4th resistance is connected with the base stage of the 3rd triode, and the collector of the 3rd triode is connected by the other end of light emitting diode with the 5th resistance; The negative pole of described battery is connected with the negative pole of first electric capacity, the negative pole of second electric capacity, the other end of the 3rd resistance and the emitter of the 3rd triode respectively.
Wherein, the resistance of described first resistance is 50-300K Ω.The resistance of described the 3rd resistance is 50-300 Ω.
The utility model has following advantage compared with prior art: reasonable in design, simple in structure, convenient operating maintenance, with low cost and can realize many grades of advantages such as control, it is applied widely, uses when being particularly suitable for child and children are learnt.
Description of drawings
Fig. 1 is the circuit theory diagrams of a kind of embodiment of the utility model.
Embodiment
With reference to Fig. 1, a kind of child teaching is made up of battery DC, K switch, first capacitor C 1, second capacitor C 2, first to the 5th resistance R 1-R5, first to the 3rd triode T1-T3, loudspeaker L and light-emitting diodes LED pipe with music electronic acousto-optic metronome.The positive pole of described battery DC is by the positive pole of K switch and first capacitor C 1, one end of first resistance R 1, one end of second resistance R 2, one end of the end of loudspeaker L and the 5th resistance R 5 is connected, the other end of first resistance R 1 is connected with the base stage anodal and the first triode T1 of second capacitor C 1, the other end of second resistance R 2 is connected with the collector of the first triode T1 and the base stage of the second triode T2, the emitter of the first triode T1 is connected with the emitter of the second triode T2 and an end of the 3rd resistance R 3, the other end of loudspeaker L is connected with the collector of the second triode T2 and an end of the 4th resistance R 4, the other end of the 4th resistance R 4 is connected with the base stage of the 3rd triode T3, and the collector of the 3rd triode T3 is connected by the other end of LED with the 5th resistance R 5; The negative pole of described battery DC is connected with the negative pole of first capacitor C 1, the negative pole of second capacitor C 2, the other end of the 3rd resistance R 3 and the emitter of the 3rd triode T3 respectively.
This practical new in, the resistance of described first resistance R 1 is 50-300K Ω, the resistance of adjusting first resistance R 1 can change twice luminous time interval of LED.The resistance of described the 3rd resistance R 3 is 50-300 Ω, and the resistance of adjusting the 3rd resistance R 3 can change lighting the time of the each flash of light of LED.
Claims (3)
1. a child teaching is with music electronic acousto-optic metronome, by battery, switch, first electric capacity, second electric capacity, first to the 5th resistance, first to the 3rd triode, loudspeaker and light emitting diode are formed, it is characterized in that: the positive pole of described battery is by the positive pole of switch and first electric capacity, one end of first resistance, one end of second resistance, one end of loudspeaker and an end of the 5th resistance are connected, the other end of first resistance is connected with the base stage anodal and first triode of second electric capacity, the other end of second resistance is connected with the collector of first triode and the base stage of second triode, the emitter of first triode is connected with the emitter of second triode and an end of the 3rd resistance, the other end of loudspeaker is connected with the collector of second triode and an end of the 4th resistance, the other end of the 4th resistance is connected with the base stage of the 3rd triode, and the collector of the 3rd triode is connected by the other end of light emitting diode with the 5th resistance; The negative pole of described battery is connected with the negative pole of first electric capacity, the negative pole of second electric capacity, the other end of the 3rd resistance and the emitter of the 3rd triode respectively.
2. child teaching according to claim 1 is with music electronic acousto-optic metronome, and it is characterized in that: the resistance of described first resistance is 50-300K Ω.
3. child teaching according to claim 1 is with music electronic acousto-optic metronome, and it is characterized in that: the resistance of described the 3rd resistance is 50-300 Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320180037 CN203134178U (en) | 2013-04-11 | 2013-04-11 | A music electronic acousto-optic metronome used in child teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320180037 CN203134178U (en) | 2013-04-11 | 2013-04-11 | A music electronic acousto-optic metronome used in child teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203134178U true CN203134178U (en) | 2013-08-14 |
Family
ID=48942130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320180037 Expired - Fee Related CN203134178U (en) | 2013-04-11 | 2013-04-11 | A music electronic acousto-optic metronome used in child teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203134178U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105206145A (en) * | 2015-10-27 | 2015-12-30 | 新乡医学院 | Beat generator |
-
2013
- 2013-04-11 CN CN 201320180037 patent/CN203134178U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105206145A (en) * | 2015-10-27 | 2015-12-30 | 新乡医学院 | Beat generator |
| CN105206145B (en) * | 2015-10-27 | 2018-02-02 | 新乡医学院 | One kind claps generator |
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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: 20130814 Termination date: 20150411 |
|
| EXPY | Termination of patent right or utility model |