JPS6251432U - - Google Patents
Info
- Publication number
- JPS6251432U JPS6251432U JP14049685U JP14049685U JPS6251432U JP S6251432 U JPS6251432 U JP S6251432U JP 14049685 U JP14049685 U JP 14049685U JP 14049685 U JP14049685 U JP 14049685U JP S6251432 U JPS6251432 U JP S6251432U
- Authority
- JP
- Japan
- Prior art keywords
- bipolar transistor
- operation confirmation
- confirmation sound
- data collector
- portable data
- 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
- 238000012790 confirmation Methods 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Input From Keyboards Or The Like (AREA)
Description
第１図は本考案の実施例を用いた携帯用データ
収集機のブロツク図、第２図は従来の操作確認音
発生回路の回路図、第３図はデユーテイー比を変
化させることにより音量を変化させる時の駆動信
号波形図、第４図はＣＭＯＳスイツチとしてＭＯ
Ｓトランジスタを用いた場合の実施例を示した回
路図、第５図は本考案の実施例での圧電スピーカ
ーに加わる交流電圧と交流駆動信号を示した波形
図である。
１…バイポーラトランジスタ、２…ベース抵抗
、３…圧電スピーカー、４…昇圧コイル、６，１
１ａ，ｂ…抵抗、１２ａ，ｂ…ＣＭＯＳスイツチ
、１６ａ，ｂ…ＭＯＳトランジスタ。
Fig. 1 is a block diagram of a portable data collector using an embodiment of the present invention, Fig. 2 is a circuit diagram of a conventional operation confirmation sound generation circuit, and Fig. 3 shows a change in volume by changing the duty ratio. Figure 4 shows the drive signal waveform diagram when the MO
FIG. 5 is a circuit diagram showing an embodiment using an S transistor. FIG. 5 is a waveform diagram showing an AC voltage and an AC drive signal applied to a piezoelectric speaker in an embodiment of the present invention. 1... Bipolar transistor, 2... Base resistor, 3... Piezoelectric speaker, 4... Boost coil, 6, 1
1a, b...resistor, 12a, b...CMOS switch, 16a, b...MOS transistor.
Claims (1)
ジスタを用いた携帯用データ収集機の操作確認音
発生回路において、前記バイポーラトランジスタ
のベースには、一本の抵抗と、直列接続された抵
抗とＣＭＯＳスイツチが一組以上並列に接続され
、前記ＣＭＯＳスイツチを開閉することにより、
前記バイポーラトランジスタの合成ベース抵抗値
を変化させることにより操作確認音の音量を変化
させることを特徴とする携帯用データ収集機の操
作確認音発生回路。 (2) 前記ＣＭＯＳスイツチとは、ＣＭＯＳアナ
ログスイツチであることを特徴とする実用新案登
録請求の範囲第一項記載の携帯用データ収集機の
操作確認音発生回路。 (3) 前記ＣＭＯＳスイツチとは、前記バイポー
ラトランジスタの極性がＮＰＮ型である時にはＮ
チヤンネルＭＯＳトランジスタ、ＰＮＰ型である
時にはＰチヤンネルＭＯＳトランジスタであり、
かつソースが前記バイポーラトランジスタのベー
スに接続されていることを特徴とする実用新案登
録請求の範囲第一項記載の携帯用データ収集機の
操作確認音発生回路。[Claims for Utility Model Registration] (1) In an operation confirmation sound generation circuit for a portable data collector using a bipolar transistor as a driving element of a sounding body, the base of the bipolar transistor has a resistor connected in series with the base of the bipolar transistor. One or more sets of connected resistors and CMOS switches are connected in parallel, and by opening and closing the CMOS switches,
An operation confirmation sound generation circuit for a portable data collector, characterized in that the volume of the operation confirmation sound is changed by changing the composite base resistance value of the bipolar transistor. (2) The operation confirmation sound generation circuit for a portable data collector according to claim 1, wherein the CMOS switch is a CMOS analog switch. (3) The CMOS switch refers to the NPN type when the polarity of the bipolar transistor is NPN type.
Channel MOS transistor, when it is PNP type, it is P channel MOS transistor,
The operation confirmation sound generating circuit for a portable data collector according to claim 1, wherein the source is connected to the base of the bipolar transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14049685U JPS6251432U (en) | 1985-09-13 | 1985-09-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14049685U JPS6251432U (en) | 1985-09-13 | 1985-09-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6251432U true JPS6251432U (en) | 1987-03-31 |
Family
ID=31047396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14049685U Pending JPS6251432U (en) | 1985-09-13 | 1985-09-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6251432U (en) |
-
1985
- 1985-09-13 JP JP14049685U patent/JPS6251432U/ja active Pending