JPS58170696U - Piezoelectric buzzer drive device - Google Patents
Piezoelectric buzzer drive deviceInfo
- Publication number
- JPS58170696U JPS58170696U JP6924382U JP6924382U JPS58170696U JP S58170696 U JPS58170696 U JP S58170696U JP 6924382 U JP6924382 U JP 6924382U JP 6924382 U JP6924382 U JP 6924382U JP S58170696 U JPS58170696 U JP S58170696U
- Authority
- JP
- Japan
- Prior art keywords
- piezoelectric buzzer
- drive device
- buzzer drive
- capacitor
- bias current
- 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
Landscapes
- Piezo-Electric Transducers For Audible Bands (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第゛１図は従来例における方向指示器動作音発生用の打
音器の構成を示す断面図、第２図は同じく方向指示器動
作音発生用の圧電ブザーの構成を示す断面図、第３図ａ
は第２図の圧電ブザーの電源電圧を示す波形図、第３図
すは同図ａの電源電圧と圧電ブザーの鳴動期間の関係を
示す波形図、第４図〜第６図はそれぞれ方向指示器動作
音発生用圧電ブザーの従来の駆動回路例を宗す回路図、
第７図〜第９図はそれぞれ本考案における圧電ブザー駆
動装置の実施例を示４回路図である。
１・・・・・・発振用トランジスタ、１９．２０・・・
・・・電源端子、２８・・・・・・コンデンサ。Fig. 1 is a cross-sectional view showing the configuration of a conventional sounding device for generating turn signal operation sound, Fig. 2 is a cross-sectional view showing the structure of a piezoelectric buzzer for generating turn signal operation sound, and Fig. 3 Diagram a
is a waveform diagram showing the power supply voltage of the piezoelectric buzzer in Figure 2, Figure 3 is a waveform diagram showing the relationship between the power supply voltage and the ringing period of the piezoelectric buzzer in Figure 3a, and Figures 4 to 6 are respectively for direction indication. A circuit diagram based on a conventional drive circuit example of a piezoelectric buzzer for generating device operation sound,
FIGS. 7 to 9 are four circuit diagrams showing embodiments of the piezoelectric buzzer driving device of the present invention, respectively. 1...Oscillation transistor, 19.20...
...Power terminal, 28... Capacitor.
Claims (1)
バイアス電流供給経路に直列にコンデンサを接続し、所
定の時定数に従って上記バイアス電流が減少するように
構成すると共に上記コンデンサを含む閉回路を構成して
なる圧電ブザー駆動装置。A capacitor is connected in series with a bias current supply path from one end of the power supply terminal to the base of the oscillation transistor, and the bias current is configured to decrease according to a predetermined time constant, and a closed circuit including the capacitor is configured. A piezoelectric buzzer drive device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6924382U JPS58170696U (en) | 1982-05-11 | 1982-05-11 | Piezoelectric buzzer drive device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6924382U JPS58170696U (en) | 1982-05-11 | 1982-05-11 | Piezoelectric buzzer drive device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58170696U true JPS58170696U (en) | 1983-11-14 |
Family
ID=30078977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6924382U Pending JPS58170696U (en) | 1982-05-11 | 1982-05-11 | Piezoelectric buzzer drive device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58170696U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5526955U (en) * | 1978-08-10 | 1980-02-21 |
-
1982
- 1982-05-11 JP JP6924382U patent/JPS58170696U/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5526955U (en) * | 1978-08-10 | 1980-02-21 |
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