JPS6125039Y2 - - Google Patents
Info
- Publication number
- JPS6125039Y2 JPS6125039Y2 JP1976076275U JP7627576U JPS6125039Y2 JP S6125039 Y2 JPS6125039 Y2 JP S6125039Y2 JP 1976076275 U JP1976076275 U JP 1976076275U JP 7627576 U JP7627576 U JP 7627576U JP S6125039 Y2 JPS6125039 Y2 JP S6125039Y2
- Authority
- JP
- Japan
- Prior art keywords
- buzzer
- circuit
- piezoelectric
- output terminal
- integrated circuit
- 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.)
- Expired
Links
- 238000010586 diagram Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Electric Clocks (AREA)
- Electromechanical Clocks (AREA)
Description
【考案の詳細な説明】
本考案はデジタル集積回路（以下単にICと略
称）を用いた装置に於いてIC出力信号で警報ブ
ザーをスイツチング動作させる回路の改良に関す
るものである。[Detailed Description of the Invention] The present invention relates to an improvement of a circuit that switches an alarm buzzer using an IC output signal in a device using a digital integrated circuit (hereinafter simply referred to as IC).
従来ICの出力信号で警報ブザーをスイツチン
グ動作させる場合は、第１図に示す如く通常この
ような用途に広く用いられる電磁ブザー４の内部
インピーダンスが低いためIC１の駆動用直流電
源２とは別にブザー駆動用直流電源３を設け、更
に該電源３の出力端子間に電磁ブザー４と直列に
トランジスタ等で回路構成されるスイツチング回
路５を接続しており該スイツチング回路５をIC
出力端子６の出力信号でスイツチング動作させて
前記電磁ブザー４を鳴動若しくは休止させるよう
に回路を構成していた。 Conventionally, when switching an alarm buzzer using the output signal of an IC, as shown in Fig. 1, the internal impedance of the electromagnetic buzzer 4, which is commonly used widely in such applications, is low, so the buzzer must be operated separately from the DC power supply 2 for driving the IC1. A driving DC power source 3 is provided, and a switching circuit 5 composed of a transistor or the like is connected in series with an electromagnetic buzzer 4 between the output terminals of the power source 3, and the switching circuit 5 is connected to an IC.
The circuit is configured to cause the electromagnetic buzzer 4 to ring or pause by performing a switching operation using an output signal from the output terminal 6.
しかしこのような回路構成であるため回路部品
点数が多く高価なものとなる欠点があつた。 However, this circuit configuration has the disadvantage that it requires a large number of circuit components and is expensive.
本考案は上記欠点を改善するため使用する警報
ブザーを内部インピーダンスの高い圧電ブザーと
しスイツチング動作するICの出力端子の出力で
直接該圧電ブザーを鳴動又は休止させるものであ
る。 In order to improve the above-mentioned drawbacks, the present invention uses a piezoelectric buzzer with high internal impedance as the alarm buzzer used, and directly causes the piezoelectric buzzer to sound or pause with the output of the output terminal of the switching-operating IC.
以下第２図に示す本考案による一実施例につい
て説明する。 An embodiment of the present invention shown in FIG. 2 will be described below.
図中第１図と同一記号は同一ブロツク、同一端
子を示す。 In the figure, the same symbols as in FIG. 1 indicate the same blocks and the same terminals.
先ず圧電ブザー７の回路は直流電源入力両端子
８，９間に抵抗１０と圧電振動子１１を直列に接
続し該圧電振動子印加両電極１２，１３をそれぞ
れトランジスタ１５のコレクタ及びエミツタとに
接続しかつ該トランジスタ１５のベースは抵抗１
６を介して前記入力端子８と接続し更に圧電振動
子１１の分割電極１４は前記トランジスタ１５の
ベースに接続して構成されている。 First, the circuit of the piezoelectric buzzer 7 is constructed by connecting a resistor 10 and a piezoelectric vibrator 11 in series between both DC power input terminals 8 and 9, and connecting the piezoelectric vibrator application electrodes 12 and 13 to the collector and emitter of a transistor 15, respectively. And the base of the transistor 15 is connected to the resistor 1.
The divided electrode 14 of the piezoelectric vibrator 11 is further connected to the base of the transistor 15.
このように回路構成された圧電ブザー７は抵抗
１０の抵抗値を大きくして内部インピーダンスを
高めることにより消費電流の少ないブザーとする
ことができる。 The piezoelectric buzzer 7 having the circuit configuration as described above can be made to consume less current by increasing the resistance value of the resistor 10 and increasing the internal impedance.
従つて該圧電ブザー７の入力両端子８，９をそ
れぞれIC１の出力端子６及び電源２のマイナス
電極とに接続すれば何らIC１の回路動作に悪影
響を与えることなくブザースイツチング回路を構
成することができる。 Therefore, by connecting both input terminals 8 and 9 of the piezoelectric buzzer 7 to the output terminal 6 of the IC 1 and the negative electrode of the power supply 2, a buzzer switching circuit can be constructed without any adverse effect on the circuit operation of the IC 1. Can be done.
この場合電気−音響変換効率の高いことが特長
の１つである圧電ブザーを用いるため充分警報の
用に足る音圧が得られることは言うまでもない。 In this case, since a piezoelectric buzzer is used, which has one of its features of high electric-acoustic conversion efficiency, it is needless to say that a sound pressure sufficient for an alarm can be obtained.
このように本考案によれば従来不可欠とされて
いたブザー駆動用電源及びスイツチング回路を削
除することがで、実用上極めて有益なブザースイ
ツチング回路を提供できる。 As described above, according to the present invention, a buzzer switching circuit which is extremely useful in practice can be provided by eliminating the buzzer drive power supply and switching circuit, which were conventionally considered indispensable.
第１図は従来のブザースイツチング回路のブロ
ツク図、第２図は本考案による一実施例を示すブ
ザースイツチング回路のブロツク図及び圧電ブザ
ー回路図である。
１……IC、２……IC駆動用直流電源、３……
ブザー駆動用直流電源、４……電磁ブザー、５…
…スイツチング回路、６……IC出力端子、７…
…圧電ブザー、８，９……直流電源入力両端子、
１０，１６……抵抗、１１……圧電振動子、１
２，１３……印加両電極、１４……分割電極、１
５……トランジスタ。
FIG. 1 is a block diagram of a conventional buzzer switching circuit, and FIG. 2 is a block diagram of a buzzer switching circuit and a piezoelectric buzzer circuit diagram showing one embodiment of the present invention. 1...IC, 2...DC power supply for driving IC, 3...
Buzzer drive DC power supply, 4... Electromagnetic buzzer, 5...
...Switching circuit, 6...IC output terminal, 7...
...Piezoelectric buzzer, 8, 9...Both DC power input terminals,
10, 16...Resistance, 11...Piezoelectric vibrator, 1
2, 13...Both application electrodes, 14...Divided electrodes, 1
5...transistor.
Claims (1)
と該集積回路の出力端子間に、圧電振動子と直列
に接続される抵抗を具備して回路構成された圧電
ブザーを接続して前記出力端子が前記電源の他方
の電極と導通状態となる時前記圧電ブザーが鳴動
することを特徴とするブザースイツチング回路。 A piezoelectric buzzer having a circuit configuration including a resistor connected in series with a piezoelectric vibrator is connected between one electrode of a DC power supply for driving a digital integrated circuit and an output terminal of the integrated circuit, so that the output terminal is connected to the output terminal of the integrated circuit. A buzzer switching circuit characterized in that the piezoelectric buzzer sounds when it is in a conductive state with the other electrode of the power source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1976076275U JPS6125039Y2 (en) | 1976-06-10 | 1976-06-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1976076275U JPS6125039Y2 (en) | 1976-06-10 | 1976-06-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS52166483U JPS52166483U (en) | 1977-12-16 |
| JPS6125039Y2 true JPS6125039Y2 (en) | 1986-07-28 |
Family
ID=28551128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1976076275U Expired JPS6125039Y2 (en) | 1976-06-10 | 1976-06-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6125039Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4998218A (en) * | 1973-01-23 | 1974-09-17 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50133076U (en) * | 1974-04-16 | 1975-11-01 |
-
1976
- 1976-06-10 JP JP1976076275U patent/JPS6125039Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4998218A (en) * | 1973-01-23 | 1974-09-17 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS52166483U (en) | 1977-12-16 |
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