JPS6188390U - - Google Patents
Info
- Publication number
- JPS6188390U JPS6188390U JP17232184U JP17232184U JPS6188390U JP S6188390 U JPS6188390 U JP S6188390U JP 17232184 U JP17232184 U JP 17232184U JP 17232184 U JP17232184 U JP 17232184U JP S6188390 U JPS6188390 U JP S6188390U
- Authority
- JP
- Japan
- Prior art keywords
- low frequency
- frequency oscillator
- transformer
- amplifier
- output terminal
- 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
- 238000004804 winding Methods 0.000 claims 3
- 230000010355 oscillation Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Devices For Supply Of Signal Current (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Description
第１図は本考案によるミユート回路を有する呼
出信号音発生装置の一実施例の構成を示した回路
図、第２図はミユート回路を有する呼出信号音発
生装置の従来例の構成を示した回路図である。
１…ボタン電話機、２…通話線、３…主装置、
４…通話回路、５…呼出信号音発生装置、６…ス
ピーカ、７…発振器、８…制御回路、９…減衰器
、Ｔ…トランス、Ａ…増幅器、Ｒ１…抵抗、ＡＳ
…アナログスイツチ、ＶＲ…ボリユーム。
FIG. 1 is a circuit diagram showing the configuration of an embodiment of a ringing signal tone generator having a mute circuit according to the present invention, and FIG. 2 is a circuit diagram showing the configuration of a conventional example of a ringing signal tone generator having a mute circuit. It is a diagram. 1... Key telephone, 2... Call line, 3... Main device,
4... Call circuit, 5... Ringing signal tone generator, 6... Speaker, 7... Oscillator, 8... Control circuit, 9... Attenuator, T... Transformer, A... Amplifier, R 1 ... Resistor, AS
…Analog switch, VR…Volume.
Claims (1)
機におけるミユート回路を有する呼出信号音発生
装置において、前記通話線と接続された１次巻線
を有するトランスと、該トランスの２次巻線に並
列に接続された可変抵抗と、該可変抵抗の接触子
と一端が接続された固定抵抗と、該固定抵抗の他
端に入力端子が接続された増幅器と、該増幅器の
出力端子に接続されたスピーカと、呼出信号用の
低周波発振器と、該低周波発振器の出力端子と前
記トランスの２次巻線との間に接続されたアナロ
グスイツチと、前記低周波発振器の出力端子と前
記増幅器の入力端子との間に接続された減衰器と
、前記主装置から送られてきたデータにもとずい
て前記アナログスイツチの開閉と前記低周波発振
器の発振とを制御する制御回路とを有するボタン
電話機におけるミユート回路を有する呼出信号音
発生装置。 In a ringing signal tone generator having a mute circuit in a button telephone connected to a main device via a telephone line, a transformer having a primary winding connected to the telephone line is connected in parallel to a secondary winding of the transformer. a variable resistor connected to the variable resistor, a fixed resistor having one end connected to a contactor of the variable resistor, an amplifier having an input terminal connected to the other end of the fixed resistor, and a speaker connected to the output terminal of the amplifier. a low frequency oscillator for a calling signal, an analog switch connected between an output terminal of the low frequency oscillator and a secondary winding of the transformer, an output terminal of the low frequency oscillator and an input terminal of the amplifier. and a control circuit that controls opening/closing of the analog switch and oscillation of the low frequency oscillator based on data sent from the main device. A ringing signal tone generator having a circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984172321U JPH0328627Y2 (en) | 1984-11-15 | 1984-11-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984172321U JPH0328627Y2 (en) | 1984-11-15 | 1984-11-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6188390U true JPS6188390U (en) | 1986-06-09 |
| JPH0328627Y2 JPH0328627Y2 (en) | 1991-06-19 |
Family
ID=30729991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984172321U Expired JPH0328627Y2 (en) | 1984-11-15 | 1984-11-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0328627Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5660385U (en) * | 1979-10-15 | 1981-05-22 | ||
| JPS57173457U (en) * | 1981-04-24 | 1982-11-01 |
-
1984
- 1984-11-15 JP JP1984172321U patent/JPH0328627Y2/ja not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5660385U (en) * | 1979-10-15 | 1981-05-22 | ||
| JPS57173457U (en) * | 1981-04-24 | 1982-11-01 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0328627Y2 (en) | 1991-06-19 |
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