JPS634598U - - Google Patents
Info
- Publication number
- JPS634598U JPS634598U JP9760586U JP9760586U JPS634598U JP S634598 U JPS634598 U JP S634598U JP 9760586 U JP9760586 U JP 9760586U JP 9760586 U JP9760586 U JP 9760586U JP S634598 U JPS634598 U JP S634598U
- Authority
- JP
- Japan
- Prior art keywords
- piezoelectric buzzer
- programmable
- generates
- driving
- pulse
- 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 4
Landscapes
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Description
第１図は本考案に係わる駆動回路の一実施例の
接続図、第２図は第１図回路の動作を説明するた
めの波形図、第３図は従来の回路の一例の接続図
、第４図は第３図回路の動作を説明するための波
形図である。
１０……圧電ブザー、３１……マイクロプロセ
ツサ、３２……プログラマブル・パルスジエネレ
ータ、３３……プログラマブル・ワンシヨツトパ
ルスジエネレータ。
Fig. 1 is a connection diagram of an embodiment of the drive circuit according to the present invention, Fig. 2 is a waveform diagram for explaining the operation of the circuit shown in Fig. 1, and Fig. 3 is a connection diagram of an example of a conventional circuit. FIG. 4 is a waveform diagram for explaining the operation of the circuit of FIG. 3. 10... Piezoelectric buzzer, 31... Microprocessor, 32... Programmable pulse generator, 33... Programmable one-shot pulse generator.
Claims (1)
いて、マイクロプロセツサのデータバスに接続さ
れ所望の周波数の方形波を発生するプログラマブ
ル・パルスジエネレータ、マイクロプロセツサの
データバスに接続され前記圧電ブザーにおける音
の長さを定めるパルスを発生するプログラマブル
・ワンシヨツトパルスジエネレータ、及び前記両
パルスジエネレータの出力により前記圧電ブザー
を駆動する駆動信号を得るゲート回路を具備した
圧電ブザーの駆動回路。 In a drive circuit for driving a separately excited piezoelectric buzzer, a programmable pulse generator is connected to a data bus of a microprocessor and generates a square wave of a desired frequency; A drive circuit for a piezoelectric buzzer, comprising: a programmable one-shot pulse generator that generates a pulse that determines the length of a sound; and a gate circuit that obtains a drive signal for driving the piezoelectric buzzer from the outputs of both pulse generators.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9760586U JPS634598U (en) | 1986-06-27 | 1986-06-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9760586U JPS634598U (en) | 1986-06-27 | 1986-06-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS634598U true JPS634598U (en) | 1988-01-13 |
Family
ID=30964728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9760586U Pending JPS634598U (en) | 1986-06-27 | 1986-06-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS634598U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0250780A (en) * | 1988-08-12 | 1990-02-20 | Toshiba Corp | Method for outputting specific signal for microcomputer |
-
1986
- 1986-06-27 JP JP9760586U patent/JPS634598U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0250780A (en) * | 1988-08-12 | 1990-02-20 | Toshiba Corp | Method for outputting specific signal for microcomputer |
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