JPS6454100U - - Google Patents
Info
- Publication number
- JPS6454100U JPS6454100U JP14849487U JP14849487U JPS6454100U JP S6454100 U JPS6454100 U JP S6454100U JP 14849487 U JP14849487 U JP 14849487U JP 14849487 U JP14849487 U JP 14849487U JP S6454100 U JPS6454100 U JP S6454100U
- Authority
- JP
- Japan
- Prior art keywords
- terminal
- capacitor
- resistor
- level
- rectangular wave
- 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.)
- Granted
Links
- 239000003990 capacitor Substances 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Alarm Systems (AREA)
Description
第１図は本考案によるチヤイム音発生回路の一
実施例を示すブロツク図、第２図、第３図、第４
図は第１図に係わる波形図、第５図は従来のチヤ
イム音発生回路のブロツク図である。
１……スピーカ、Ｃ１……コンデンサ、Ｄ１…
…第１のダイオード、Ｄ２……第２のダイオード
、Ｄ３……第３のダイオード、Ｒ１……第１の抵
抗、Ｒ２……第２の抵抗、Ｒ３……第３の抵抗、
ＰＡ，ＰＢ，ＰＣ，ＰＤ……端子。
FIG. 1 is a block diagram showing an embodiment of the chime sound generating circuit according to the present invention, FIGS. 2, 3, and 4.
This figure is a waveform diagram related to FIG. 1, and FIG. 5 is a block diagram of a conventional chime sound generating circuit. 1...Speaker, C1 ...Capacitor, D1 ...
...first diode, D2 ...second diode, D3 ...third diode, R1 ...first resistance, R2 ... second resistance, R3 ...third resistance ,
PA, PB, PC, PD...terminals.
Claims (1)
連続した第１、第２の可聴信号からなるチヤイム
音を生成するチヤイム音発生回路において、コン
デンサと、一端が基準電位点に接続され他端が上
記コンデンサの一方の電極に接続された第１の抵
抗と、Ｈレベル並びにＬレベルを単位周期とする
第１の矩形波を出力する第１の端子と、上記第１
の端子と上記コンデンサの他方の電極との間に介
在した第１のダイオードと、Ｌレベル並びにＨレ
ベルを単位周期とする第２の矩形波を出力する第
２の端子と、上記第２の端子と上記コンデンサの
他方の電極の間に介在した第２の抵抗および第２
のダイオードと、上記第１の矩形波の周期ではＬ
レベル、上記第２の矩形波の周期ではＨレベルと
なる第３の端子と、上記第３の端子と上記コンデ
ンサの一方の電極の間に介在した第３の抵抗およ
び第３のダイオードと、上記第１の抵抗の両端に
形成される上記第１、第２の矩形波に係わる第１
、第２可聴信号からなるチヤイム音を出力するス
ピーカとを具備したチヤイム音発生回路。 A chime sound generating circuit that generates a chime sound consisting of a ring switch and continuous first and second audible signals in response to the operation of the ring switch, includes a capacitor, one end of which is connected to a reference potential point, and the other end of which is connected to the capacitor. a first terminal that outputs a first rectangular wave whose unit period is H level and L level;
a first diode interposed between the terminal and the other electrode of the capacitor, a second terminal that outputs a second rectangular wave whose unit period is L level and H level, and the second terminal and a second resistor interposed between the other electrode of the capacitor and the second resistor.
, and the period of the first rectangular wave is L.
a third terminal which is at H level in the period of the second rectangular wave; a third resistor and a third diode interposed between the third terminal and one electrode of the capacitor; A first resistor related to the first and second rectangular waves formed at both ends of the first resistor.
, and a speaker that outputs a chime sound consisting of a second audible signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987148494U JPH0522960Y2 (en) | 1987-09-29 | 1987-09-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987148494U JPH0522960Y2 (en) | 1987-09-29 | 1987-09-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6454100U true JPS6454100U (en) | 1989-04-04 |
| JPH0522960Y2 JPH0522960Y2 (en) | 1993-06-11 |
Family
ID=31419869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987148494U Expired - Lifetime JPH0522960Y2 (en) | 1987-09-29 | 1987-09-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0522960Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5854698U (en) * | 1981-10-08 | 1983-04-13 | 明星電気株式会社 | Chime sound signal generation circuit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5854698B2 (en) * | 1979-07-25 | 1983-12-06 | 富士通株式会社 | Fault detection method |
-
1987
- 1987-09-29 JP JP1987148494U patent/JPH0522960Y2/ja not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5854698U (en) * | 1981-10-08 | 1983-04-13 | 明星電気株式会社 | Chime sound signal generation circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0522960Y2 (en) | 1993-06-11 |