JPH0442700U - - Google Patents
Info
- Publication number
- JPH0442700U JPH0442700U JP8310890U JP8310890U JPH0442700U JP H0442700 U JPH0442700 U JP H0442700U JP 8310890 U JP8310890 U JP 8310890U JP 8310890 U JP8310890 U JP 8310890U JP H0442700 U JPH0442700 U JP H0442700U
- Authority
- JP
- Japan
- Prior art keywords
- varicap diode
- piezoelectric buzzer
- oscillator
- input signal
- buzzer
- 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.)
- Pending
Links
- 230000001960 triggered effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 230000010355 oscillation Effects 0.000 description 1
Landscapes
- Oscillators With Electromechanical Resonators (AREA)
Description
第１図乃至第３図はこの考案に係る圧電ブザー
の音階可変回路の実施例を示し、第１図は構成ブ
ロツク図、第２図は積分器の回路図、第３図は入
力信号と各ブロツクの出力信号との関係を示す波
形図である。第４図は従来例の圧電ブザー駆動の
ブロツク図である。
主な符号の説明、１……積分器、２……単安定
マルチバイブレータ、３……アナログスイツチ、
４……バツフアアンプ、５……可変発振器、５ａ
……バリキヤツプダイオード、５ｂ……発振部、
６……圧電ブザー。
1 to 3 show an embodiment of the variable scale circuit of a piezoelectric buzzer according to this invention, FIG. 1 is a configuration block diagram, FIG. 2 is a circuit diagram of an integrator, and FIG. FIG. 3 is a waveform diagram showing the relationship between the block and the output signal. FIG. 4 is a block diagram of a conventional piezoelectric buzzer drive. Explanation of main symbols, 1... Integrator, 2... Monostable multivibrator, 3... Analog switch,
4... Buffer amplifier, 5... Variable oscillator, 5a
...varicap diode, 5b...oscillation section,
6...Piezoelectric buzzer.
補正 平２．１１．８ 考案の名称を次のように補正する。 考案の名称 圧電ブザーの音階可変回路Correction: Heisei 2.11.8 The name of the invention is amended as follows. Name of the invention: Piezoelectric buzzer scale variable circuit
Claims (1)
されブザー音を発生する圧電ブザーとで構成され
た圧電ブザー駆動回路において、 前記発振器の出力信号を制御するバリキヤツプ
ダイオードと、このバリキヤツプダイオードを制
御するために入力信号のパルス数に応じて電圧を
出力する積分器と、入力信号によつてトリガされ
る単安定マルチバイブレータと、この単安定マル
チバイブレータの出力信号によつて積分器からの
出力電圧をバツフアを介して前記バリキヤツプダ
イオードに加えるためＯＮ／ＯＦＦさせるスイツ
チとを設け、入力信号パルス数に応じて圧電ブザ
ーから発生するブザー音の音階を可変するように
構成したことを特徴とする圧電ブザーの音階可変
回路。[Claims for Utility Model Registration] In a piezoelectric buzzer drive circuit comprising an oscillator and a piezoelectric buzzer that is driven by the output signal of the oscillator and generates a buzzer sound, a varicap diode that controls the output signal of the oscillator. , an integrator that outputs a voltage according to the number of pulses of the input signal to control this varicap diode, a monostable multivibrator that is triggered by the input signal, and an output signal of the monostable multivibrator that controls the varicap diode. Therefore, an ON/OFF switch is provided to apply the output voltage from the integrator to the varicap diode via a buffer, and the scale of the buzzer sound generated from the piezoelectric buzzer is varied according to the number of input signal pulses. A scale variable circuit for a piezoelectric buzzer characterized by the following configuration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8310890U JPH0442700U (en) | 1990-08-07 | 1990-08-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8310890U JPH0442700U (en) | 1990-08-07 | 1990-08-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0442700U true JPH0442700U (en) | 1992-04-10 |
Family
ID=31630502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8310890U Pending JPH0442700U (en) | 1990-08-07 | 1990-08-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0442700U (en) |
-
1990
- 1990-08-07 JP JP8310890U patent/JPH0442700U/ja active Pending