CN205541928U - Buzzer - Google Patents
Buzzer Download PDFInfo
- Publication number
- CN205541928U CN205541928U CN201620245606.6U CN201620245606U CN205541928U CN 205541928 U CN205541928 U CN 205541928U CN 201620245606 U CN201620245606 U CN 201620245606U CN 205541928 U CN205541928 U CN 205541928U
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- circuit
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- power supply
- control integrated
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Abstract
The utility model provides a buzzer includes speaker BZ, master control integrated circuit U1, characterized by, the anodal VCC of power, another termination master control integrated circuit U1's output XO is imported to speaker BZ's a termination, master control integrated circuit's power first input end VDD meets the anodal VCC of input power, master control integrated circuit's power second input GND ground connection, and the signal driver speaker BZ of master control integrated circuit U1 output sounds. This buzzer's characteristics are, master control integrated circuit has only three pin convenient to use, and buzzer's volume mainly depends on the size of speaker, and the space that occupies is little, oscillation circuit and frequency division counter circuit's parameter can realize multiple sound effects in change master control integrated circuit's the piece, has the advantage in the aspect of output precision, output flexibility, simplification design etc..
Description
Technical field
This utility model relates to a kind of novel buzzer, and it is made up of governor circuit and speaker.It is applied in the fields such as all kinds of electronic circuit, household electrical appliances, instrument and equipment, automobile.
Background technology
Traditional buzzer circuit implementation, the general employing device such as double-triode valve additional conventional, electric-resistance, inductance realizes, and the sound is generally long tweeting sound, and 2 ~ 3KHz that frequency is the most fixing, the precision of rate-adaptive pacemaker is the highest, and the volume of product is bigger.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of novel buzzer, this buzzer is not only able to realize the repertoire of traditional buzzer, and improve a lot at the aspect of performance such as output accuracy, parameter, and there is the several functions such as interrupted sounding, scalable load.
The present invention solves the technical scheme of technical problem, and a kind of buzzer includes speaker BZ, main control integrated circuit U1, it is characterized in that, the outfan XO of another termination main control integrated circuit U1 of the positive pole VCC, speaker BZ of a termination input power of speaker BZ；The power supply first input end VDD of main control integrated circuit meets the positive pole VCC of input power, power supply the second input GND ground connection of main control integrated circuit, and the signal of main control integrated circuit U1 outfan drives speaker BZ to send sound.
The internal structure of described main control integrated circuit includes that oscillating circuit in power supply voltage stabilizing reduction voltage circuit, circuit for preventing reverse connection of power supply, frequency counter circuit, sheet, signal amplify and output driving circuit, power supply voltage stabilizing reduction voltage circuit carries out voltage stabilizing to input power, the lead-in wire 1 of power supply voltage stabilizing reduction voltage circuit is power supply first input end VDD, the lead-in wire 3 of power supply voltage stabilizing reduction voltage circuit connects the lead-in wire 4 of circuit for preventing reverse connection of power supply, power supply the second input GND that lead-in wire 5 is main control integrated circuit of circuit for preventing reverse connection of power supply, when reverse power connection, in power supply voltage stabilizing reduction voltage circuit, no current passes through；In the lead-in wire 6 of frequency counter circuit and sheet, the lead-in wire 10 of oscillating circuit connects the lead-in wire 2 of power supply voltage stabilizing reduction voltage circuit；In sheet, oscillating circuit produces a high frequency ac signal, and in sheet, the lead-in wire 9 of oscillating circuit connects the lead-in wire 7 of frequency counter circuit；High frequency ac signal is divided by frequency counter circuit, and the lead-in wire 8 of frequency counter circuit connects signal and amplifies and the lead-in wire 12 of output driving circuit, and signal amplifies and the outfan XO that lead-in wire 15 is main control integrated circuit U1 of output driving circuit；Signal amplifies the lead-in wire 13 with output driving circuit and connects the lead-in wire 1 of power supply voltage stabilizing reduction voltage circuit；Signal amplifies and the lead-in wire 11 of oscillating circuit in lead-in wire 14 contact pin of output driving circuit, and its node is connected with the lead-in wire 5 of circuit for preventing reverse connection of power supply.
The high frequency ac signal that in described sheet, oscillating circuit produces is intermittence high frequency ac signal.
Described main control integrated circuit also includes a fuse sets circuit, the lead-in wire 16 of fuse sets circuit is connected with the node of the lead-in wire 11 of oscillating circuit in signal amplification and the lead-in wire 14 of output driving circuit and sheet, and the lead-in wire 17 of fuse sets circuit is connected with the lead-in wire 5 of circuit for preventing reverse connection of power supply；The cut-off of fuse sets circuit, fuse sets circuit turn-on during nonoverload when signal amplifies the current overload with output driving circuit.
The feature of this buzzer is, main control integrated circuit only has three pins easy to use, and the volume of buzzer depends primarily on the size of speaker, and the space taken is little；In the sheet of change main control integrated circuit, the parameter of oscillating circuit and frequency counter circuit can realize multiple acoustics, has advantage at aspects such as output accuracy, output motility, simplification designs.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the functional-block diagram of main control integrated circuit.
Detailed description of the invention
A kind of buzzer includes speaker BZ, main control integrated circuit U1, it is characterized in that, the positive pole VCC, the outfan XO of another termination main control integrated circuit U1 of a termination input power of speaker BZ；The power supply first input end VDD of main control integrated circuit meets the positive pole VCC of input power, power supply the second input GND ground connection of main control integrated circuit, and the signal of main control integrated circuit U1 outfan drives speaker BZ to send sound.
The internal structure of described main control integrated circuit includes that oscillating circuit in power supply voltage stabilizing reduction voltage circuit, circuit for preventing reverse connection of power supply, frequency counter circuit, sheet, signal amplify and output driving circuit.
Power supply voltage stabilizing reduction voltage circuit carries out voltage stabilizing to input power; the lead-in wire 1 of power supply voltage stabilizing reduction voltage circuit is power supply first input end VDD; the lead-in wire 3 of power supply voltage stabilizing reduction voltage circuit connects the lead-in wire 4 of circuit for preventing reverse connection of power supply; power supply the second input GND that lead-in wire 5 is main control integrated circuit of circuit for preventing reverse connection of power supply; when reverse power connection, in power supply voltage stabilizing reduction voltage circuit, no current passes through; the lead-in wire 2 no current output of power supply voltage stabilizing reduction voltage circuit, to protect oscillating circuit and signal in frequency counter circuit, sheet to amplify and output driving circuit.
In the lead-in wire 6 of frequency counter circuit and sheet, the lead-in wire 10 of oscillating circuit connects the lead-in wire 2 of power supply voltage stabilizing reduction voltage circuit；In sheet, oscillating circuit produces a high frequency ac signal, and in sheet, the lead-in wire 9 of oscillating circuit connects the lead-in wire 7 of frequency counter circuit；High frequency ac signal is divided by frequency counter circuit, and the signal frequency making the lead-in wire 8 of frequency counter circuit export is accurate, changes the frequency dividing exportable different frequency of multiple of frequency counter circuit.
The lead-in wire 8 of frequency counter circuit connects signal and amplifies and the lead-in wire 12 of output driving circuit, and signal amplifies and the outfan XO that lead-in wire 15 is main control integrated circuit U1 of output driving circuit；Signal amplifies the lead-in wire 13 with output driving circuit and connects the lead-in wire 1 of power supply voltage stabilizing reduction voltage circuit；Signal amplifies and the lead-in wire 11 of oscillating circuit in lead-in wire 14 contact pin of output driving circuit, and its node is connected with the lead-in wire 5 of circuit for preventing reverse connection of power supply；Signal amplifies and output driving circuit carries out power amplification to the output signal of frequency counter circuit.
For making speaker send interrupted sound, the high frequency ac signal that in sheet, oscillating circuit produces may be designed as the output impulse train of intermittence high frequency ac signal, i.e. intermittence.
Described main control integrated circuit also includes a fuse sets circuit, the lead-in wire 16 of fuse sets circuit is connected with the node of the lead-in wire 11 of oscillating circuit in signal amplification and the lead-in wire 14 of output driving circuit and sheet, and the lead-in wire 17 of fuse sets circuit is connected with the lead-in wire 5 of circuit for preventing reverse connection of power supply；The cut-off of fuse sets circuit, fuse sets circuit turn-on during nonoverload when signal amplifies the current overload with output driving circuit.
For reducing the harmonic components of input power, between the power supply first input end VDD and power supply the second input GND of main control integrated circuit of main control integrated circuit, it is parallel with filter capacitor C1.
Claims (4)
1. a buzzer, it includes speaker BZ, main control integrated circuit U1, it is characterized in that, the outfan XO of another termination main control integrated circuit U1 of the positive pole VCC, speaker BZ of a termination input power of speaker BZ；The power supply first input end VDD of main control integrated circuit meets the positive pole VCC of input power, power supply the second input GND ground connection of main control integrated circuit；The signal of main control integrated circuit U1 outfan drives speaker BZ to send sound.
Buzzer the most according to claim 1, is characterized in that, the internal structure of described main control integrated circuit includes that oscillating circuit in power supply voltage stabilizing reduction voltage circuit, circuit for preventing reverse connection of power supply, frequency counter circuit, sheet, signal amplify and output driving circuit；
Power supply voltage stabilizing reduction voltage circuit carries out voltage stabilizing to input power, the lead-in wire (1) of power supply voltage stabilizing reduction voltage circuit is power supply first input end VDD, the lead-in wire (3) of power supply voltage stabilizing reduction voltage circuit connects the lead-in wire (4) of circuit for preventing reverse connection of power supply, power supply the second input GND that lead-in wire (5) is main control integrated circuit of circuit for preventing reverse connection of power supply, when reverse power connection, in power supply voltage stabilizing reduction voltage circuit, no current passes through；
In the lead-in wire (6) of frequency counter circuit and sheet, the lead-in wire (10) of oscillating circuit connects the lead-in wire (2) of power supply voltage stabilizing reduction voltage circuit；
In sheet, oscillating circuit produces a high frequency ac signal, and in sheet, the lead-in wire (9) of oscillating circuit connects the lead-in wire (7) of frequency counter circuit；
High frequency ac signal is divided by frequency counter circuit, and the lead-in wire (8) of frequency counter circuit connects signal and amplifies and the lead-in wire (12) of output driving circuit, and signal amplifies and the outfan XO that lead-in wire (15) is main control integrated circuit U1 of output driving circuit；Signal amplifies the lead-in wire (13) with output driving circuit and connects the lead-in wire (1) of power supply voltage stabilizing reduction voltage circuit；
Signal amplifies and the lead-in wire (11) of oscillating circuit in lead-in wire (14) contact pin of output driving circuit, and its node is connected with the lead-in wire (5) of circuit for preventing reverse connection of power supply.
Buzzer the most according to claim 2, is characterized in that, the high frequency ac signal that in described sheet, oscillating circuit produces is intermittence high frequency ac signal.
4. according to the buzzer described in Claims 2 or 3, it is characterized in that, described main control integrated circuit also includes a fuse sets circuit, the lead-in wire (16) of fuse sets circuit is connected with the node of the lead-in wire (11) of oscillating circuit in signal amplification and the lead-in wire (14) of output driving circuit and sheet, and the lead-in wire (17) of fuse sets circuit is connected with the lead-in wire (5) of circuit for preventing reverse connection of power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620245606.6U CN205541928U (en) | 2016-03-29 | 2016-03-29 | Buzzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620245606.6U CN205541928U (en) | 2016-03-29 | 2016-03-29 | Buzzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205541928U true CN205541928U (en) | 2016-08-31 |
Family
ID=56786180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620245606.6U Expired - Fee Related CN205541928U (en) | 2016-03-29 | 2016-03-29 | Buzzer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205541928U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105654937A (en) * | 2016-03-29 | 2016-06-08 | 泰州亚芯微电子科技有限公司 | Buzzer |
-
2016
- 2016-03-29 CN CN201620245606.6U patent/CN205541928U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105654937A (en) * | 2016-03-29 | 2016-06-08 | 泰州亚芯微电子科技有限公司 | Buzzer |
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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 |
Granted publication date: 20160831 Termination date: 20200329 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |