CN204257198U - A kind of driving circuit utilizing passive piezoelectric buzzer to realize imitative polyphonic ring tone - Google Patents
A kind of driving circuit utilizing passive piezoelectric buzzer to realize imitative polyphonic ring tone Download PDFInfo
- Publication number
- CN204257198U CN204257198U CN201420696398.2U CN201420696398U CN204257198U CN 204257198 U CN204257198 U CN 204257198U CN 201420696398 U CN201420696398 U CN 201420696398U CN 204257198 U CN204257198 U CN 204257198U
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- China
- Prior art keywords
- hummer
- loop
- oscillator signal
- ring tone
- piezoelectric buzzer
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- 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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- Piezo-Electric Transducers For Audible Bands (AREA)
Abstract
The utility model relates to a kind of driving circuit utilizing passive piezoelectric buzzer to realize imitative polyphonic ring tone, comprise oscillator signal input circuit Q and hummer loop, described oscillator signal input circuit is by an oscillator signal switch Q1 series connection hummer loop, this hummer loop connects power supply control end CON by connect a power switch Q2, this power switch Q2 of a current-limiting resistance R7.This circuit utilizes the combination in the oscillator signal input circuit of prior art and passive piezoelectric buzzer loop, namely the effect of imitative polyphonic ring tone is reached, the buzzer of several different frequency is changed out by short time inscribe, superposed signal need not be simulated drive, reduce production and the use cost of enterprise.
Description
Technical field
The utility model belongs to electronic technology field, relates to the driving circuit of imitative polyphonic ring tone, especially a kind of driving circuit utilizing passive piezoelectric buzzer to realize imitative polyphonic ring tone.
Background technology
In today, the improvement that product is paid attention to detail more and lifting that market competition is day by day fierce.Much use now monolithic processor controlled electrical equipment etc. to have melodious polyphonic ring tone when button operation to send, have the polyphonic ring tone of different tone when usual operation machine open/close or other button, compare common ticking or BI-BI-sound to the more joyful operating experience of people.
At present, the conventional solution realizing polyphonic ring tone is mostly use chord loudspeaker to be driven by the superposition of simulating signal, mostly structure is comparatively complicated for the existing driving circuit utilizing passive piezoelectric buzzer to realize imitative polyphonic ring tone, and cost is higher, need simulation superposed signal just can drive, and chord effect neither be very good.
By retrieval, not yet find the patent document identical with the utility model.
Utility model content
The purpose of this utility model is the weak point overcoming original technology, a kind of driving circuit utilizing passive piezoelectric buzzer to realize imitative polyphonic ring tone is provided, this driving circuit design science is reasonable, structure is simple, circuit is easy, modify tone effective, the buzzer changing several different frequency by short time inscribe realizes, and need not simulate superposed signal and drive.
The technical scheme that the utility model technical solution problem adopts is:
A kind of driving circuit utilizing passive piezoelectric buzzer to realize imitative polyphonic ring tone, comprise oscillator signal input circuit Q and hummer loop, it is characterized in that: described oscillator signal input circuit is by an oscillator signal switch Q1 series connection hummer loop, this hummer loop connects power supply control end CON by connect a power switch Q2, this power switch Q2 of a current-limiting resistance R7.
And described oscillator signal input circuit comprises two diode D1 and D2 in parallel, resistance R1, R2, R3, R4, R5 and R6, electric capacity C1 and comparer, what its signal output part exported is square wave oscillation signal.
And described hummer loop is made up of hummer BZ and electric capacity C2.
Advantage of the present utility model and good effect are:
1, this circuit utilizes the combination in the oscillator signal input circuit of prior art and passive piezoelectric buzzer loop, namely the effect of imitative polyphonic ring tone is reached, the buzzer of several different frequency is changed out by short time inscribe, superposed signal need not be simulated drive, reduce production and the use cost of enterprise.
2, this circuit design science, structure is simple, and it is convenient to control, and modifies tone effective, with low cost.
Accompanying drawing explanation
Fig. 1 is circuit connection diagram of the present utility model.
Embodiment
For content of the present utility model, Characteristic can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows.It should be noted that, the present embodiment is descriptive, is not determinate, can not limit protection domain of the present utility model thus.
A kind of driving circuit utilizing passive piezoelectric buzzer to realize imitative polyphonic ring tone, as shown in Figure 1, described circuit comprises oscillator signal input circuit Q and hummer loop, wherein, oscillator signal input circuit is by an oscillator signal switch Q1 series connection hummer loop, this hummer loop also connects power supply control end CON by connect a power switch Q2, this power switch Q2 of a current-limiting resistance R7.
Described oscillator signal input circuit comprises two diode D1 and D2 in parallel, resistance R1, R2, R3, R4, R5 and R6, electric capacity C1 and comparer, and what its signal output part exported is square wave oscillation signal.
Described hummer loop is made up of hummer BZ and electric capacity C2.
The principle of work of this driving circuit is as follows: the CON of this circuit is power supply control end, and Q1 is oscillator signal input end, Q2 conducting, and hummer starts power supply, electric capacity C2 charging simultaneously; If Q1 has the square-wave signal of certain frequency to send, then hummer can send and pipe; If now first turn off power switch Q2, namely Q2 turns off, and Q1 still sends square-wave signal, then hummer can rely on C2 electric discharge to sound; But along with electric capacity electricity reduces, volume can reduce gradually, forms the buzzer polyphonic ring tone effect of fading out, and realize the effect modified tone, then the buzzer changing several different frequency by short time inscribe realizes.
Claims (3)
1. the driving circuit utilizing passive piezoelectric buzzer to realize imitative polyphonic ring tone, comprise oscillator signal input circuit Q and hummer loop, it is characterized in that: described oscillator signal input circuit is by an oscillator signal switch Q1 series connection hummer loop, this hummer loop connects power supply control end CON by connect a power switch Q2, this power switch Q2 of a current-limiting resistance R7.
2. the driving circuit utilizing passive piezoelectric buzzer to realize imitative polyphonic ring tone according to claim 1, it is characterized in that: described oscillator signal input circuit comprises two diode D1 and D2 in parallel, resistance R1, R2, R3, R4, R5 and R6, electric capacity C1 and comparer, what its signal output part exported is square wave oscillation signal.
3. the driving circuit utilizing passive piezoelectric buzzer to realize imitative polyphonic ring tone according to claim 1, is characterized in that: described hummer loop is made up of hummer BZ and electric capacity C2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420696398.2U CN204257198U (en) | 2014-11-19 | 2014-11-19 | A kind of driving circuit utilizing passive piezoelectric buzzer to realize imitative polyphonic ring tone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420696398.2U CN204257198U (en) | 2014-11-19 | 2014-11-19 | A kind of driving circuit utilizing passive piezoelectric buzzer to realize imitative polyphonic ring tone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204257198U true CN204257198U (en) | 2015-04-08 |
Family
ID=52961481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420696398.2U Expired - Fee Related CN204257198U (en) | 2014-11-19 | 2014-11-19 | A kind of driving circuit utilizing passive piezoelectric buzzer to realize imitative polyphonic ring tone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204257198U (en) |
-
2014
- 2014-11-19 CN CN201420696398.2U patent/CN204257198U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150408 Termination date: 20181119 |