CN105206145A - Beat generator - Google Patents
Beat generator Download PDFInfo
- Publication number
- CN105206145A CN105206145A CN201510704623.1A CN201510704623A CN105206145A CN 105206145 A CN105206145 A CN 105206145A CN 201510704623 A CN201510704623 A CN 201510704623A CN 105206145 A CN105206145 A CN 105206145A
- Authority
- CN
- China
- Prior art keywords
- operational amplifier
- resistance
- loudspeaker
- generator
- resistor
- 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.)
- Granted
Links
- 239000003990 capacitor Substances 0.000 claims abstract description 6
- 238000004321 preservation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000035800 maturation Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/14—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for acoustics
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mathematical Optimization (AREA)
- Computational Mathematics (AREA)
- Mathematical Analysis (AREA)
- Algebra (AREA)
- Mathematical Physics (AREA)
- Pure & Applied Mathematics (AREA)
- Business, Economics & Management (AREA)
- Acoustics & Sound (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- Theoretical Computer Science (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
The invention discloses a beat generator which comprises two waveform generators, wherein the structure of each waveform generator is characterized in that: a resistor R1 and a capacitor C1 are connected in parallel; one end of the resistor R1 is grounded, and the other end of the resistor R1 is connected with a capacitor C2 in series, and is connected with an operational amplifier; the capacitor C2 is connected with an adjustable resistor RP1 in series; the adjustable resistor RP1 is connected with an adjustable resistor RP2 in series, and is connected with the operational amplifier A; the adjustable resistor RP2 is connected with a resistance R2 in series; the resistor R2 is grounded; the operational amplifier is connected with a loudspeaker; a frequency meter is connected between the operational amplifier and the loudspeaker; a power source provides power for the operational amplifier and the loudspeaker. The beat generator is reasonable in structure and good in use effect.
Description
Technical field:
The present invention relates to physics teaching aid, particularly a kind of bat generator being applicable to sound wave teaching.
Background technology:
Bat is a kind of phenomenon in physics, is commonly used to survey frequency.The tuning fork that use two frequencies are identical in the teaching of physics at present explains the phenomenon producing and clap, but the natural frequency of tuning fork is fixed, can not arbitrarily change, and do not have frequency to show, can not observe the relation between the generation of bat and frequency intuitively, tuning fork is in transport and preservation process in addition, very easily damages, cause more difficulty to transport and preservation, and can quality of instruction be affected.
Summary of the invention:
The object of the invention is to design a kind of rational in infrastructure, bat generator that result of use is good.
Technical scheme of the present invention is, a kind of bat generator, it comprises resistance, capacitor, it is characterized in that: the present invention is made up of two waveform generators, the structure of each waveform generator is: resistance R1 is in parallel with electric capacity C1, one end ground connection, the other end is connected with electric capacity C2 and is connected in operational amplifier, electric capacity C2 connects with adjustable resistance RP1, adjustable resistance RP1 connects with adjustable resistance RP2, and adjustable resistance RP1 is connected with operational amplifier A, adjustable resistance RP2 connects with resistance R2, resistance R2 ground connection, operational amplifier is connected with loudspeaker, directly frequency meter is connected with at operational amplifier and loudspeaker, operational amplifier and loudspeaker are by Power supply.
The present invention is rational in infrastructure, and result of use is good, the fabrication of electronic components of operation technique maturation of the present invention, stable performance, convenient transport and preservation; And use digital frequency meter to show, intuitively can observe frequency when sending raw, and the frequency-splitting between two waveform generators; Use fabrication of electronic components, the volume clapping generator can be reduced, facilitate teacher to carry, especially the underdeveloped place of remote mountain areas traffic; The electronic component that the present invention uses is all common component, and price is extremely low, reduces the cost clapping generator, can meet the teaching request of poverty-stricken area.
Accompanying drawing illustrates:
Fig. 1 is structural representation of the present invention.
Embodiment:
Describe embodiment in detail by reference to the accompanying drawings,
A kind of bat generator, it comprises resistance, capacitor, the present invention is made up of two waveform generators, the structure of each waveform generator is: resistance R1 is in parallel with electric capacity C1, one end ground connection, the other end is connected with electric capacity C2 and is connected in operational amplifier A, electric capacity C2 connects with adjustable resistance RP1, and adjustable resistance RP1 connects with adjustable resistance RP2, and adjustable resistance RP1 is connected with operational amplifier, adjustable resistance RP2 connects with resistance R2, resistance R2 ground connection, operational amplifier is connected with loudspeaker, is directly connected with frequency meter at operational amplifier and loudspeaker; Operational amplifier and loudspeaker are by Power supply.
When the present invention uses, regulator potentiometer RP1, adjustable potentiometer RP2, namely the value of corresponding potentiometer is changed, thus change the frequency values of waveform generator, make two frequency meter registrations identical, between 100Hz-2KHz, numerical value can be selected arbitrarily, regulate separately two waveform generators to make frequency phase-difference about the 2HZ of two waveforms again, namely the ripple of two different frequencies significantly can hear the generation of bat through superposition.
The above; be only the present invention's preferably embodiment, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention sets forth; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.
Claims (1)
1. a bat generator, it comprises resistance, capacitor, it is characterized in that: the present invention is made up of two waveform generators, the structure of each waveform generator is: resistance R1 is in parallel with electric capacity C1, one end ground connection, the other end is connected with electric capacity C2 and is connected in operational amplifier, electric capacity C2 connects with adjustable resistance RP1, adjustable resistance RP1 connects with adjustable resistance RP2, and adjustable resistance RP1 is connected with operational amplifier A, adjustable resistance RP2 connects with resistance R2, resistance R2 ground connection, operational amplifier is connected with loudspeaker, directly frequency meter is connected with at operational amplifier and loudspeaker, operational amplifier and loudspeaker are by Power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510704623.1A CN105206145B (en) | 2015-10-27 | 2015-10-27 | One kind claps generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510704623.1A CN105206145B (en) | 2015-10-27 | 2015-10-27 | One kind claps generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105206145A true CN105206145A (en) | 2015-12-30 |
| CN105206145B CN105206145B (en) | 2018-02-02 |
Family
ID=54953784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510704623.1A Expired - Fee Related CN105206145B (en) | 2015-10-27 | 2015-10-27 | One kind claps generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105206145B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106530909A (en) * | 2017-01-20 | 2017-03-22 | 山东科技大学 | Beat frequency generating demonstrating instrument |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2000558A1 (en) * | 1969-01-09 | 1970-09-17 | Eastman Kodak Co | Exposure control |
| DD200558A1 (en) * | 1981-10-01 | 1983-05-18 | Jochen Langer | METHOD AND DEVICE FOR PRODUCING SCREW PRESSURE SPRINGS |
| CN87201606U (en) * | 1987-06-18 | 1988-02-03 | 山东教学仪器厂 | Electromagnetic acoustooptical metronome |
| CN2112875U (en) * | 1991-06-12 | 1992-08-12 | 广州市乐器工业公司 | Electronic metronome |
| CN203134178U (en) * | 2013-04-11 | 2013-08-14 | 张晓琳 | A music electronic acousto-optic metronome used in child teaching |
| CN203134176U (en) * | 2013-03-14 | 2013-08-14 | 秦晶 | Multi-meter electronic metronome |
| CN205122043U (en) * | 2015-10-27 | 2016-03-30 | 新乡医学院 | Clap generator |
-
2015
- 2015-10-27 CN CN201510704623.1A patent/CN105206145B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2000558A1 (en) * | 1969-01-09 | 1970-09-17 | Eastman Kodak Co | Exposure control |
| DD200558A1 (en) * | 1981-10-01 | 1983-05-18 | Jochen Langer | METHOD AND DEVICE FOR PRODUCING SCREW PRESSURE SPRINGS |
| CN87201606U (en) * | 1987-06-18 | 1988-02-03 | 山东教学仪器厂 | Electromagnetic acoustooptical metronome |
| CN2112875U (en) * | 1991-06-12 | 1992-08-12 | 广州市乐器工业公司 | Electronic metronome |
| CN203134176U (en) * | 2013-03-14 | 2013-08-14 | 秦晶 | Multi-meter electronic metronome |
| CN203134178U (en) * | 2013-04-11 | 2013-08-14 | 张晓琳 | A music electronic acousto-optic metronome used in child teaching |
| CN205122043U (en) * | 2015-10-27 | 2016-03-30 | 新乡医学院 | Clap generator |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106530909A (en) * | 2017-01-20 | 2017-03-22 | 山东科技大学 | Beat frequency generating demonstrating instrument |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105206145B (en) | 2018-02-02 |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180202 |
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| CF01 | Termination of patent right due to non-payment of annual fee |