CN204480658U - A kind of buzzer drive circuit - Google Patents
A kind of buzzer drive circuit Download PDFInfo
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- CN204480658U CN204480658U CN201520038898.1U CN201520038898U CN204480658U CN 204480658 U CN204480658 U CN 204480658U CN 201520038898 U CN201520038898 U CN 201520038898U CN 204480658 U CN204480658 U CN 204480658U
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- drive circuit
- triode
- buzzer drive
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Abstract
The utility model discloses a kind of buzzer drive circuit, the first resistance comprising the control port that is connected with governor circuit and be connected successively with described control port and triode, the collector of described triode is in series with diode and the second resistance successively, the other end of described second resistance is connected with 5V power supply, the two ends of described diode are parallel with hummer, further, electric capacity is provided with between the base stage of described triode and emitter.The beneficial effects of the utility model: this circuit has the advantage of simple, the with low cost and dependable performance of structure, and the hummer in circuit can be made can to stablize normal work.
Description
Technical field
The utility model relates to buzzer circuit technical field, specifically, relates to a kind of buzzer drive circuit.
Background technology
Hummer is as a kind of electronics buzzer of integral structure, and it is widely used in doing microphone device in the electronic products such as computing machine, printer, duplicating machine, alarm, electronic toy, vehicle electronics, telephone set and timer.
But existing most of buzzer drive circuit operationally also exists the problem of voltage instability, tonequality when this can affect hummer work and volume, make it can not the work of normal table.
For the problem described in above-mentioned correlation technique, at present effective solution is not yet proposed.
Utility model content
For problem above-mentioned in correlation technique, the utility model proposes a kind of buzzer drive circuit, can effective stable operating voltage, make hummer can stablize normal work.
For realizing above-mentioned technical purpose, the technical solution of the utility model is achieved in that
A kind of buzzer drive circuit, the first resistance comprising the control port that is connected with governor circuit and be connected successively with described control port and triode, the collector of described triode is in series with diode and the second resistance successively, the other end of described second resistance is connected with 5V power supply, the two ends of described diode are parallel with hummer, further, electric capacity is provided with between the base stage of described triode and emitter.
Further, described first resistance is electrically connected with the base stage of described triode.
Further, described second resistance is connected with the negative electricity of described diode.
Further, the resistance of described first resistance is 128 kilo-ohms.
Further, the resistance of described second resistance is 100 ohm.
Further, the capacitance of described electric capacity is 0.1 microfarad.
The beneficial effects of the utility model: this circuit has the advantage of simple, the with low cost and dependable performance of structure, and the hummer in circuit can be made can to stablize normal work.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the buzzer drive circuit according to the utility model embodiment.
In figure:
1, control port; 2, the first resistance; 3, triode; 4, diode; 5, the second resistance; 6,5V power supply; 7, hummer; 8, electric capacity.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, the every other embodiment that those of ordinary skill in the art obtain, all belongs to the scope of the utility model protection.
As shown in Figure 1, a kind of buzzer drive circuit according to embodiment of the present utility model, the first resistance 2 comprising the control port 1 that is connected with governor circuit and be connected successively with described control port 1 and triode 3, the collector of described triode 3 is in series with diode 4 and the second resistance 5 successively, wherein, the other end of described second resistance 5 is connected with 5V power supply 6, the two ends of described diode 4 are parallel with hummer 7, further, electric capacity 8 is provided with between the base stage of described triode 3 and emitter.
In addition, in a specific embodiment, described first resistance 2 is electrically connected with the base stage of described triode 3.
In addition, in a specific embodiment, described second resistance 5 is connected with the negative electricity of described diode 4.
In addition, in a specific embodiment, the resistance of described first resistance 2 is 128 kilo-ohms.
In addition, in a specific embodiment, the resistance of described second resistance 5 is 100 ohm.
In addition, in a specific embodiment, the capacitance of described electric capacity 8 is 0.1 microfarad.
Conveniently understand technique scheme of the present utility model, below by way of in concrete use-pattern, technique scheme of the present utility model is described in detail.
When specifically using, when governor circuit gives described control port+5V voltage, described triode 3 will conducting, this is that hummer 7 is started working, when governor circuit gives described control port 0V voltage, described triode 3 is in cut-off state, and at this moment hummer 7 quits work.
In this circuit arrangement, electric capacity plays the effect of filtering, makes voltage more stable, and the first resistance and the second resistance then play the effect of current limliting, prevents electric current in circuit excessive, plays the object of protection circuit.
In sum, this circuit has the advantage of simple, the with low cost and dependable performance of structure, and the hummer in circuit can be made can to stablize normal work.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (6)
1. a buzzer drive circuit, it is characterized in that, the first resistance (2) comprising the control port (1) that is connected with governor circuit and be connected successively with described control port (1) and triode (3), the collector of described triode (3) is in series with diode (4) and the second resistance (5) successively, wherein, the other end of described second resistance (5) is connected with 5V power supply (6), the two ends of described diode (4) are parallel with hummer (7), further, electric capacity (8) is provided with between the base stage of described triode (3) and emitter.
2. buzzer drive circuit according to claim 1, is characterized in that, described first resistance (2) is electrically connected with the base stage of described triode (3).
3. buzzer drive circuit according to claim 1, is characterized in that, described second resistance (5) is connected with the negative electricity of described diode (4).
4. buzzer drive circuit according to claim 1, is characterized in that, the resistance of described first resistance (2) is 128 kilo-ohms.
5. buzzer drive circuit according to claim 1, is characterized in that, the resistance of described second resistance (5) is 100 ohm.
6. buzzer drive circuit according to claim 1, is characterized in that, the capacitance of described electric capacity (8) is 0.1 microfarad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520038898.1U CN204480658U (en) | 2015-01-20 | 2015-01-20 | A kind of buzzer drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520038898.1U CN204480658U (en) | 2015-01-20 | 2015-01-20 | A kind of buzzer drive circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204480658U true CN204480658U (en) | 2015-07-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520038898.1U Active CN204480658U (en) | 2015-01-20 | 2015-01-20 | A kind of buzzer drive circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204480658U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105989828A (en) * | 2015-12-29 | 2016-10-05 | 合肥龙多电子科技有限公司 | Parallel buzzer and chord tone drive circuit |
-
2015
- 2015-01-20 CN CN201520038898.1U patent/CN204480658U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105989828A (en) * | 2015-12-29 | 2016-10-05 | 合肥龙多电子科技有限公司 | Parallel buzzer and chord tone drive circuit |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |