CN202159481U - Buzzer device with variable tones - Google Patents
Buzzer device with variable tones Download PDFInfo
- Publication number
- CN202159481U CN202159481U CN2011202664545U CN201120266454U CN202159481U CN 202159481 U CN202159481 U CN 202159481U CN 2011202664545 U CN2011202664545 U CN 2011202664545U CN 201120266454 U CN201120266454 U CN 201120266454U CN 202159481 U CN202159481 U CN 202159481U
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- CN
- China
- Prior art keywords
- module
- multivibrator
- changeable
- photoresistance
- hummer
- 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 discloses a buzzer device with variable tones, which comprises a power supply, a switch, a multivibrator module, a current-limiting module, a low power tube module and a buzzer generator module which are mutually connected in an end-to-end way to form a closed circuit. The utility model has the advantages that the design is exquisite, and the circuit is simple; and by the variable frequency signals of time-base circuit IC of the multivibrator module, the buzzer can give out the tones with different volumes and frequencies, so that the function of buzzing of the buzzer device with variable tones can be realized.
Description
Technical field
The utility model belongs to technical field of electronic components, relates to the changeable hummer device of a kind of tone.
Background technology
The application of hummer more and more widely; Hummer is under different illumination; Can send tweedle fluctuated, that tone is changeable, the change of its sound is infinite, yet existing hummer device circuit complex structure, components and parts are various, the loss heat is many, the operation inconvenient.
Summary of the invention
The purpose of the utility model provides the changeable hummer device of a kind of tone, and circuit design is exquisite, circuit is simple, operation is more convenient.
The technical scheme that the utility model adopted is; The hummer device that a kind of tone is changeable; Comprise the interconnective successively power supply of head and the tail, switch, multivibrator module, current limliting module, low power tube module and buzzing generator module, these six parts constitute a closed-loop path.
The characteristics of the utility model also are,
The multivibrator module is made up of time base circuit IC, resistance R 1, photoresistance RG, capacitor C 1 and capacitor C 2.
Photoresistance RG in the multivibrator module adopts the photoresistance of MG41-MG45 series.
Time base circuit IC in the multivibrator module adopts 555 models.
The beneficial effect of the utility model is, deft design, circuit are simple, through the changeable frequency signal of the time base circuit IC of multivibrator module, makes hummer send size, sound equipment that frequency is different.
Description of drawings
Fig. 1 is the structural representation of the changeable hummer device of the utility model tone.
Among the figure, 1. power supply, 2. switch, 3. multivibrator module, 4. current limliting module, 5. low power tube module, 6. buzzing generator module.
Fig. 2 is that the multivibrator module of the changeable hummer device of the utility model tone is implemented circuit diagram.
Among the figure, R1 is a resistance, and RG is photoresistance, and C1 and C2 are electric capacity, and IC is a time base circuit.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is elaborated.
The structure of the hummer device that the utility model tone is changeable; As shown in Figure 1; Comprise the interconnective successively power supply of head and the tail 1, switch 2, multivibrator module 3, current limliting module 4, low power tube module 5 and buzzing generator module 6, these six parts constitute a closed-loop path.
Multivibrator module 3 is made up of time base circuit IC, resistance R 1, photoresistance RG, capacitor C 1 and capacitor C 2.
Photoresistance RG in the multivibrator module 3 adopts the photoresistance of MG41-MG45 series.
Time base circuit IC in the multivibrator module 3 adopts 555 models.
The changeable hummer device of the utility model tone is based on the application technology of electronic devices and components; Its course of work is: Closing Switch 2 power-on modules 1; The changeable frequency signal of the core ingredient time base circuit IC of multivibrator module 3 drives low power tube module 5 and sends changeable tweedle through buzzing generator module 6 after current limliting module 4 current limlitings.
Multivibrator module 3 is to be core with time base circuit IC, is made up of time base circuit IC and resistance R 1, photoresistance RG and capacitor C 1.Repair with general no stable state that oscillator is no to be, a photosensitive circuit RG has connected in its charging and discharging circuit more.Photoresistance is a kind of passive light sensing device, and it utilizes the photic conductive characteristic of semiconductor (like Cds, Cdse), and its resistance changes with the irradiation light intensity; Illumination is strong, and resistance value is little; Illumination weak or unglazed according to the time, resistance value is big.Utilize this light sensitive characteristic, can change the charge and discharge time constant of oscillator, finally change the multi-harmonic-oscillations frequency.Be fc=(1.44/ R1
+2RG
)RG in the C1 formula is the resistance value of photo-resistor under different light.The wide variation of photoresistance can make oscillation frequency fc that corresponding wide variation is arranged.
Claims (4)
1. hummer device that tone is changeable; It is characterized in that; Comprise head and the tail interconnective successively power supply (1), switch (2), multivibrator module (3), current limliting module (4); Low power tube module (5) and buzzing generator module (6), these six parts constitute a closed-loop path.
2. the hummer device that tone according to claim 1 is changeable is characterized in that, said multivibrator module (3) is made up of time base circuit (IC), resistance (R1), photoresistance (RG), electric capacity (C1) and electric capacity (C2).
3. the hummer device that tone according to claim 2 is changeable is characterized in that, the time base circuit (IC) in the said multivibrator module (3) adopts 555 models.
4. the hummer device that tone according to claim 2 is changeable is characterized in that, the photoresistance of MG41-MG45 series is adopted in the photoresistance (RG) in the said multivibrator module (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202664545U CN202159481U (en) | 2011-07-26 | 2011-07-26 | Buzzer device with variable tones |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202664545U CN202159481U (en) | 2011-07-26 | 2011-07-26 | Buzzer device with variable tones |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202159481U true CN202159481U (en) | 2012-03-07 |
Family
ID=45767107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202664545U Expired - Fee Related CN202159481U (en) | 2011-07-26 | 2011-07-26 | Buzzer device with variable tones |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202159481U (en) |
-
2011
- 2011-07-26 CN CN2011202664545U patent/CN202159481U/en not_active Expired - Fee Related
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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: 20120307 Termination date: 20120726 |