CN102496360A - Music drive circuit - Google Patents
Music drive circuit Download PDFInfo
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- CN102496360A CN102496360A CN2011104199932A CN201110419993A CN102496360A CN 102496360 A CN102496360 A CN 102496360A CN 2011104199932 A CN2011104199932 A CN 2011104199932A CN 201110419993 A CN201110419993 A CN 201110419993A CN 102496360 A CN102496360 A CN 102496360A
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- triode
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Abstract
The invention discloses a music drive circuit composed of two input/output ends, three triodes, three capacitors, five resistors and one buzzer. A first input/output end is connected with a base electrode of a first triode after being connected with a first resistor in series, and the base electrode and a first capacitor is connected between an emitting electrode of the first triode in series; a serial connection structure of the base electrode and the emitting electrode of a second triode is same as that of the first triode; a collector electrode of the first triode is connected with the base electrode of the second triode after being connected with a third resistor in series, the collector electrode of the second triode is connected with the collector electrode of a third triode after being connected with a fifth resistor in series, and two ends of the fifth resistor are connected with the buzzer in parallel; and the collector electrode of the third triode is orderly connected with a third capacitor ground wire and a fourth capacitor ground wire in series, and the emitting electrode of the third triode is connected with a power supply voltage. The music drive circuit of the invention is simple in structure, practical in performance, steady and reliable, and has a good popularization and use value.
Description
Technical field
The present invention relates to circuit field, be specifically related to a kind of musical sound driving circuit.
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Background technology
Musical sound driving circuit in the prior art, complex structure often, functional module is more, cost an arm and a leg, but performance is perfect not to the utmost, how to design a kind of simple in structurely, and the driving circuit of excellent performance is the direction that those skilled in the art study always.
Summary of the invention
In order to overcome the deficiency that prior art exists, it is a kind of simple in structure that the present invention provides, musical sound driving circuit stable and reliable for performance.
For reaching the foregoing invention purpose, the technical scheme that the present invention adopted is:
A kind of musical sound driving circuit is made up of two input/output terminals, three triodes, three electric capacity, five resistance and a hummer,
First input/output terminal is connected in series the base stage that is connected on first triode behind first resistance, serial connection first electric capacity between the base stage of first triode and emitter, first triode emitter ground connection simultaneously;
Second input/output terminal is connected in series the base stage that is connected on second triode behind second resistance, serial connection second electric capacity between the base stage of second triode and emitter, and the emitter of second triode is ground connection simultaneously;
Be connected on the base stage of the 3rd triode behind collector series connection the 3rd resistance of first triode, be connected on the collector of the 3rd triode behind collector series connection the 5th resistance of second triode, the two ends of the 5th resistance are parallel with a hummer;
The collector of the 3rd triode is connected in series the 3rd electric capacity and the 4th resistance eutral grounding line successively, and the emitter of the 3rd triode connects a supply voltage.
Preferably, the positive pole of said electrochemical capacitor E is connected the collector of the 3rd triode; Said supply voltage power supply 5V.
The present invention's advantage relative and prior art is:
The circuit elements device that uses in the musical sound driving circuit of the present invention is few, simple in structure, and stable and reliable for performance, has the value of promoting the use of.
Above-mentioned explanation only is the general introduction of technical scheme of the present invention, understands technological means of the present invention in order can more to know, and can implement according to the content of instructions, below with preferred embodiment of the present invention and conjunction with figs. specify as after.Embodiment of the present invention is provided by following examples and accompanying drawing thereof in detail.
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Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the circuit theory diagrams of a kind of musical sound driving circuit of the present invention.
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Embodiment
In conjunction with shown in Figure 1, a kind of musical sound driving circuit is made up of two input/output terminals, three triodes, three electric capacity, five resistance and a hummer,
The first input/output terminal I/O-1 is connected in series the base stage that is connected on the first triode Q1 after first resistance R 1, the emitter of the Q1 of serial connection first capacitor C 1, the first triode ground connection simultaneously between the base stage of the first triode Q1 and emitter;
The second input/output terminal I/O-2 is connected in series the base stage that is connected on the second triode Q2 after second resistance R 2, the emitter of serial connection second capacitor C 2, the second triode Q2 ground connection simultaneously between the base stage of the second triode Q2 and emitter;
Be connected on the base stage of the 3rd triode Q3 after collector series connection the 3rd resistance R 3 of the first triode Q1, be connected on the collector of the 3rd triode Q3 after collector series connection the 5th resistance R 5 of the second triode Q2, the two ends of the 5th resistance R 5 are parallel with a hummer BUZ;
The collector of the 3rd triode Q3 is connected in series the 3rd electric capacity E and the 4th resistance R 4 ground wires successively, and (emitter of Q3 connects a supply voltage to the 3rd triode.
Preferably, the positive pole of said electrochemical capacitor E is connected the collector of the 3rd triode Q3.
Preferably, said supply voltage power supply 5V.
The principle of work of present embodiment is following:
This circuit is that 12V power supply, resistance, ceramic disc capacitor, triode, electrochemical capacitor, hummer are arranged
The musical sound of forming drives the road.
First input/output terminal I/O-1 control 12V power supply charges to electrochemical capacitor.
When the I/O-1 port is output as high level; Signal is given the first triode Q1 base stage through the R1 current-limiting resistance; The base stage of the 3rd triode Q3 is power supply flows to base stage from emitter a high level signal; The base stage of the 3rd triode Q3 is a low level after the first triode Q1 conducting, the 12V power supply from transmitter stream to collector.
The 12V power supply is given electrochemical capacitor E charging through the 3rd triode Q3, and R4 is the current-limiting resistance of electrochemical capacitor.
When the I/O-2 port is output as high level, signal is given the second triode Q2 base stage through the R2 current-limiting resistance, makes the signal of the second triode Q2 flow to emitter from collector.After the second triode Q2 conducting, the current collection of the second triode Q2 is low level very.
After the second triode Q2 conducting, the voltage of electrochemical capacitor E makes the hummer sounding through the emitter that hummer BUZ flows to the second triode Q2.Resistance R 5 is a resonance effect.
R1, R2, R3 resistance are 4.7K Ω, and R5 resistance is 2K Ω, and R4 resistance is 220 ohm.
Q3 is a 8550PNP type triode, and Q1, Q2 are NPN9014 type triode.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (2)
1. a musical sound driving circuit is characterized in that, form by two input/output terminals, three triodes, three electric capacity, five resistance and a hummer,
Be connected on the base stage of first triode (Q1) behind first input/output terminal (I/O-1) serial connection first resistance (R1), serial connection first electric capacity (C1) between the base stage of first triode (Q1) and emitter, the emitter of (Q1) of first triode is ground connection simultaneously;
Be connected on the base stage of second triode (Q2) behind second input/output terminal (I/O-2) serial connection second resistance (R2), serial connection second electric capacity (C2) between the base stage of second triode (Q2) and emitter, the emitter of second triode (Q2) is ground connection simultaneously;
Be connected on the base stage of the 3rd triode (Q3) behind collector series connection the 3rd resistance (R3) of first triode (Q1); Be connected on the collector of the 3rd triode (Q3) behind collector series connection the 5th resistance (R5) of second triode (Q2), the two ends of the 5th resistance (R5) are parallel with a hummer (BUZ);
The collector of the 3rd triode (Q3) is connected in series the 3rd electric capacity (E) and the 4th resistance (R4) ground wire successively, and the emitter of the 3rd triode (Q3) connects a supply voltage.
2. musical sound driving circuit according to claim 1 is characterized in that, the positive pole of said electrochemical capacitor (E) is connected the collector of the 3rd triode (Q3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104199932A CN102496360A (en) | 2011-12-15 | 2011-12-15 | Music drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104199932A CN102496360A (en) | 2011-12-15 | 2011-12-15 | Music drive circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102496360A true CN102496360A (en) | 2012-06-13 |
Family
ID=46188177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104199932A Withdrawn CN102496360A (en) | 2011-12-15 | 2011-12-15 | Music drive circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102496360A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109545178A (en) * | 2019-01-30 | 2019-03-29 | 中科芯集成电路股份有限公司 | A kind of double control buzzer drive circuit |
| CN109560808A (en) * | 2018-12-28 | 2019-04-02 | 南京康派电子有限公司 | A kind of novel UART interface level conversion and multiplex electronics |
| CN113693465A (en) * | 2021-09-03 | 2021-11-26 | 文宝(福建)科技有限公司 | Intelligence rice bucket control circuit |
-
2011
- 2011-12-15 CN CN2011104199932A patent/CN102496360A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109560808A (en) * | 2018-12-28 | 2019-04-02 | 南京康派电子有限公司 | A kind of novel UART interface level conversion and multiplex electronics |
| CN109545178A (en) * | 2019-01-30 | 2019-03-29 | 中科芯集成电路股份有限公司 | A kind of double control buzzer drive circuit |
| CN113693465A (en) * | 2021-09-03 | 2021-11-26 | 文宝(福建)科技有限公司 | Intelligence rice bucket control circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| WW01 | Invention patent application withdrawn after publication |
Open date: 20120613 |