JPH01133198U - - Google Patents
Info
- Publication number
- JPH01133198U JPH01133198U JP3001788U JP3001788U JPH01133198U JP H01133198 U JPH01133198 U JP H01133198U JP 3001788 U JP3001788 U JP 3001788U JP 3001788 U JP3001788 U JP 3001788U JP H01133198 U JPH01133198 U JP H01133198U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- piezoelectric sounding
- sounding element
- frequencies
- outputs
- 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
- 238000010586 diagram Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Description
第１図は本考案の一実施例による圧電発音体の
駆動装置を示す回路図、第２図は従来の圧電発音
体の駆動装置を示す回路図、第３図Ａ〜Ｄは駆動
装置の出力電圧波形とその電圧に応じて変化する
圧電発音体のたわみ状態を表わした図である。
５……駆動回路、６，９……コンデンサ、７，
８，１０……抵抗、１１……圧電発音体、１２…
…ダイオード。
Fig. 1 is a circuit diagram showing a driving device for a piezoelectric sounding element according to an embodiment of the present invention, Fig. 2 is a circuit diagram showing a conventional driving device for a piezoelectric sounding element, and Fig. 3 A to D are outputs of the driving device. FIG. 3 is a diagram showing a voltage waveform and a deflection state of a piezoelectric sounding body that changes according to the voltage. 5... Drive circuit, 6, 9... Capacitor, 7,
8, 10...Resistance, 11...Piezoelectric sounding body, 12...
…diode.
Claims (1)
数を交互に切り換えて出力させる回路を一つに集
積したＩＣによつて圧電発音体を駆動する駆動回
路に圧電発音体と並列に回路の接地レベルより低
い電圧を発生させない方向にダイオードを接続し
てなる圧電発音体の駆動装置。 A drive circuit that drives a piezoelectric sounding element using an IC that integrates a circuit that oscillates two frequencies and a circuit that alternately switches and outputs two frequencies is connected in parallel to the piezoelectric sounding element from the ground level of the circuit. A drive device for a piezoelectric sounding element that has diodes connected in a direction that does not generate low voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3001788U JPH01133198U (en) | 1988-03-07 | 1988-03-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3001788U JPH01133198U (en) | 1988-03-07 | 1988-03-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01133198U true JPH01133198U (en) | 1989-09-11 |
Family
ID=31254705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3001788U Pending JPH01133198U (en) | 1988-03-07 | 1988-03-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01133198U (en) |
-
1988
- 1988-03-07 JP JP3001788U patent/JPH01133198U/ja active Pending
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