CN2435816Y - Pocket high volume microcomputer control metronome - Google Patents
Pocket high volume microcomputer control metronome Download PDFInfo
- Publication number
- CN2435816Y CN2435816Y CN 00237243 CN00237243U CN2435816Y CN 2435816 Y CN2435816 Y CN 2435816Y CN 00237243 CN00237243 CN 00237243 CN 00237243 U CN00237243 U CN 00237243U CN 2435816 Y CN2435816 Y CN 2435816Y
- Authority
- CN
- China
- Prior art keywords
- sound
- metronome
- volume
- hummer
- casing
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a pocket high volume microcomputer control metronome which comprises a casing that is provided with an LCD and a key input unit, and a circuit board which is arranged in the casing and composed of an SCM, a sound driving amplifier and a buzzer, wherein both ends of the buzzer is connected in parallel with an inductor, and a sound resonant loop is formed by the inductor and the buzzer. The maximum power output of the resonance frequency is generated at both ends of the sound driving amplifier by the sound resonance circuit. The metronome has the advantages of scientific design, reasonable structure, simplicity, small volume, light weight, portability, good use effect, big sound volume, etc.
Description
The utility model relates to electronic metronome, especially a kind of pocket louder volume microcomputerized control metronome.
At present, electronic metronome is made up of singlechip controller, LCD, key input unit and sound output unit usually.The voice output unit generally adopts loudspeaker or hummer, and loudspeaker volume and weight are all big than hummer, and it can send big volume, though and the hummer volume is little, in light weight, but it can only send very little volume.How making metronome do both small and exquisitely and light, can keep bigger volume again, is the problem that manufacturer transforms existing electronic metronome.
The purpose of this utility model is the deficiency that exists at above-mentioned electronic metronome, and a kind of pocket louder volume microcomputerized control of new construction metronome that small product size is little, volume is big as far as possible of making every effort to is provided.
Pocket louder volume microcomputerized control metronome of the present utility model, comprise: the casing that is provided with LCD and key-press input unit, and be arranged on the circuit board that constitutes by single-chip microcomputer, sound driving amplifier and hummer in the casing, it is characterized in that: the two ends of a hummer inductance in parallel, this inductance and hummer constitute the sound resonant tank.
The metronomic design concept of the pocket louder volume microcomputerized control of the utility model is: the sound resonant tank that utilizes inductance and hummer to constitute makes sound driving amplifier two ends produce the peak power output of resonance frequency; Another effect of sound resonant tank is to provide a collector operating voltage to the sound driving amplifier.When circuit is in resonance frequency, resistance maximum, output power maximum; When resonance frequency is taken at the intermediate value of sound frequency, can make the voice output in the certain frequency scope reach best power.
The pocket louder volume microcomputerized control of the utility model metronome design science, rational in infrastructure, simple, it is little in light weight to have a volume, is easy to carry; Advantages such as result of use is good, give great volume.
The metronomic concrete structure of the pocket louder volume microcomputerized control of the utility model is provided in detail by the following drawings and embodiment.
Fig. 1 is the metronomic contour structures synoptic diagram of pocket louder volume microcomputerized control;
Fig. 2 is the metronomic electrical schematic diagram of louder volume microcomputerized control shown in Figure 1.
Embodiment: can be clear that from figure, the key-press input unit 3 that the metronomic casing 1 of pocket louder volume microcomputerized control is provided with LCD 2 and is made up of key under Power key, Note key, Beat key, the last key of Tempo, the Tempo, and hummer vocal hole 4.Be provided with the beat generation circuit that is subjected to above-mentioned key-press input unit 3 controls in the casing 1.As seen from Figure 2, described beat generation circuit is by single-chip microcomputer 101, sound driving amplifier 102, hummer 103, and the inductance L composition that is connected in parallel on hummer 103 two ends.This inductance L and hummer 103 constitute the two ends that the sound resonant tank acts on sound driving amplifier 102, can make sound driving amplifier 102 produce the peak power output of resonance frequency.
Claims (1)
1, a kind of pocket louder volume microcomputerized control metronome, comprise: the casing that is provided with LCD and key-press input unit, and be arranged on the circuit board that constitutes by single-chip microcomputer, sound driving amplifier and hummer in the casing, it is characterized in that: the two ends of a hummer inductance in parallel, this inductance and hummer constitute the sound resonant tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00237243 CN2435816Y (en) | 2000-06-13 | 2000-06-13 | Pocket high volume microcomputer control metronome |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00237243 CN2435816Y (en) | 2000-06-13 | 2000-06-13 | Pocket high volume microcomputer control metronome |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2435816Y true CN2435816Y (en) | 2001-06-20 |
Family
ID=33598568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00237243 Expired - Fee Related CN2435816Y (en) | 2000-06-13 | 2000-06-13 | Pocket high volume microcomputer control metronome |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2435816Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105719629A (en) * | 2014-11-30 | 2016-06-29 | 南京化工职业技术学院 | Low-voltage direct current metronome |
| CN105719632A (en) * | 2014-11-30 | 2016-06-29 | 南京化工职业技术学院 | Portable electronic metronome |
| CN105719631A (en) * | 2014-11-30 | 2016-06-29 | 南京化工职业技术学院 | Electronic digital display metronome |
-
2000
- 2000-06-13 CN CN 00237243 patent/CN2435816Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105719629A (en) * | 2014-11-30 | 2016-06-29 | 南京化工职业技术学院 | Low-voltage direct current metronome |
| CN105719632A (en) * | 2014-11-30 | 2016-06-29 | 南京化工职业技术学院 | Portable electronic metronome |
| CN105719631A (en) * | 2014-11-30 | 2016-06-29 | 南京化工职业技术学院 | Electronic digital display metronome |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |