JPH01175204U - - Google Patents
Info
- Publication number
- JPH01175204U JPH01175204U JP7316288U JP7316288U JPH01175204U JP H01175204 U JPH01175204 U JP H01175204U JP 7316288 U JP7316288 U JP 7316288U JP 7316288 U JP7316288 U JP 7316288U JP H01175204 U JPH01175204 U JP H01175204U
- Authority
- JP
- Japan
- Prior art keywords
- switch element
- switch
- notification sound
- series
- series resistance
- 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 5
Landscapes
- Electric Ovens (AREA)
Description
第１図は、この考案の一実施例の報知音発生回
路の結線図、第２図は、全体の制御回路の概略ブ
ロツク図、第３図ａ、第３図ｂ及び第３図ｃは、
それぞれ圧電ブザーにかかる電圧の波形図、第４
図は、ブザー動作制御のフローチヤート図、第５
図ａ及び第５図ｂは、それぞれ従来例の報知音発
生回路の結線図、第６図ａ、第６図ｂ及び第６図
ｃは、それぞれ従来例の圧電ブザーにかかる電圧
の波形図である。
１……マイクロコンピユータ、６……入力用キ
ー、７……ブザー回路、Ｂ……圧電ブザー、ＲＢ
……ブザー抵抗、ＱＡ，ＱＢ，ＱＣ……スイツチ
素子、ＲＡ，ＲＣ，ＲＤ……直列抵抗。
FIG. 1 is a wiring diagram of a notification sound generation circuit according to an embodiment of this invention, FIG. 2 is a schematic block diagram of the entire control circuit, and FIGS. 3a, 3b, and 3c are
Waveform diagram of the voltage applied to the piezoelectric buzzer, 4th
The figure is a flowchart of buzzer operation control, part 5.
Figures a and 5b are connection diagrams of conventional notification sound generation circuits, and Figures 6a, 6b, and 6c are waveform diagrams of the voltage applied to the piezoelectric buzzer of the conventional example, respectively. be. 1... Microcomputer, 6... Input key, 7... Buzzer circuit, B... Piezoelectric buzzer, RB
...Buzzer resistance, QA, QB, QC...Switch element, RA, RC, RD...Series resistance.
Claims (1)
列抵抗を有する第１のスイツチ素子を直列に接続
して、このスイツチ素子を断続的にオンオフする
ことにより報知音を発生し、且つ、上記第１のス
イツチ素子に対してそれぞれ所定の直列抵抗を有
する複数個の第２のスイツチ素子を並列に接続し
、第２のスイツチ素子を選択的にオンまたはオフ
の状態に切り替えるようにした電子レンジの報知
音発生装置。 A first switch element having a predetermined series resistance is connected in series to an electrostrictive sounding element such as a piezoelectric buzzer, and this switch element is intermittently turned on and off to generate a notification sound, and the above-mentioned first switch element is connected in series. A microwave oven in which a plurality of second switch elements each having a predetermined series resistance are connected in parallel to a first switch element, and the second switch elements are selectively turned on or off. Notification sound generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7316288U JPH01175204U (en) | 1988-05-31 | 1988-05-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7316288U JPH01175204U (en) | 1988-05-31 | 1988-05-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01175204U true JPH01175204U (en) | 1989-12-13 |
Family
ID=31298308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7316288U Pending JPH01175204U (en) | 1988-05-31 | 1988-05-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01175204U (en) |
-
1988
- 1988-05-31 JP JP7316288U patent/JPH01175204U/ja active Pending
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