JPS60105353A - Telephone-set circuit - Google Patents

Telephone-set circuit

Info

Publication number
JPS60105353A
JPS60105353A JP21365083A JP21365083A JPS60105353A JP S60105353 A JPS60105353 A JP S60105353A JP 21365083 A JP21365083 A JP 21365083A JP 21365083 A JP21365083 A JP 21365083A JP S60105353 A JPS60105353 A JP S60105353A
Authority
JP
Japan
Prior art keywords
transistor
circuit
pulse oscillation
dial
dial pulse
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
Application number
JP21365083A
Other languages
Japanese (ja)
Inventor
Masaru Nagashima
優 長島
Kenichi Akashi
健一 明石
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP21365083A priority Critical patent/JPS60105353A/en
Publication of JPS60105353A publication Critical patent/JPS60105353A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/30—Devices which can set up and transmit only one digit at a time
    • H04M1/31—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses
    • H04M1/312—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses pulses produced by electronic circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)

Abstract

PURPOSE:To reduce the price of a telephone-set circuit by transmitting a dial- pulse oscillation output to a line by disconnecting a calling circuit directly, and by limiting the transistor to one in which a DC large current passes. CONSTITUTION:The pulse which is equivalent to the button input is transmitted from the oscillation output terminal of a dial-pulse oscillation circuit 3 at the time of dialing, a transistor 22 is connected or disconnected by the signal, and the dial signal is transmitted to the line by disconnecting the DC loop of a calling circuit directly. At this time, the control output terminal voltage of the dial- pulse oscillation circuit 3 becomes earth electric potential, both transistors 23 and 24 turn off, and it is prevented that dial click sound generates in the receiver 6.

Description

【発明の詳細な説明】 本発明は電話機回路に関する。[Detailed description of the invention] The present invention relates to telephone circuits.

従来、この樵の電話機回路は、第１図に示す様に、電話
機回路に直列にトランジスタを１つ接続し、通話時とダ
イヤル時で回路の切換えを行なっていた。またダイヤル
パルスの出力は別のトランシア−１’ｆｆイヤルバルス
発振回路の出力に接続昧直流ループの接断を行なってい
た。すなわち、第１図においてｌ及び２はそれぞれｔｌ
Ｌｘ、第２の線路端子、３はダイヤルパルス発振回路、
１１はダイヤルパルス出力トランジスタ、１２は抵抗器
、１３はダイヤルパルス制御出力トランジスタ、１４は
該トランジスタ１３の動作で制御されるトランジスタ、
４は通話回路である。Conventionally, as shown in FIG. 1, this lumberjack telephone circuit has one transistor connected in series with the telephone circuit, and the circuit is switched between when talking and when dialing. Further, the output of the dial pulse was connected to the output of another transformer 1'ff ear pulse oscillation circuit to disconnect or disconnect the DC loop. That is, in FIG. 1, l and 2 are respectively tl
Lx, second line terminal; 3 is dial pulse oscillation circuit;
11 is a dial pulse output transistor, 12 is a resistor, 13 is a dial pulse control output transistor, 14 is a transistor controlled by the operation of the transistor 13,
4 is a communication circuit.

通話時はダイヤルパルス発振回路３０制御出力端子より
トランジスタ１３を動作させる信号が出て、それにより
トランジスタ１４が動作する。この時トランジスタ１１
は動作しない。ダイヤル時ハ逆にダイヤルパルス発振回
路３０制御出力端子よりトランジスタ１３ｉオフさせる
信号が出て、ジスタ１１が動作する。During a call, a signal for operating the transistor 13 is output from the control output terminal of the dial pulse oscillation circuit 30, thereby operating the transistor 14. At this time transistor 11
doesn't work. Conversely, during dialing, a signal is output from the control output terminal of the dial pulse oscillation circuit 30 to turn off the transistor 13i, and the register 11 is activated.

このような回路では交換機からの直流大電流が流れるト
ランジスタが２つあるため、容量・耐圧の大きなトラン
ジスタが必要になり、コストアップの要因となっていた
。In such a circuit, there are two transistors through which a large DC current from the switch flows, requiring transistors with large capacity and withstand voltage, which is a factor in increasing costs.

本発明の目的は、ダイヤルパルス発振出力を通話回路と
別の回路を用いることなく直接通話回路を断続して出す
ことにより、上記欠点を除去した電話機回路を提供する
ことにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a telephone circuit which eliminates the above-mentioned drawbacks by directly outputting a dial pulse oscillation output intermittently to a telephone call circuit without using a circuit separate from the telephone call circuit.

本発明は第１の線路端子とダイヤルパルス発振回路の正
電源端子と第１のＰＮＰ　ｌ−ランジスタのエミッタを
接続し、前記第１のＰＮＰトランジスタのコレクタと抵
抗器の１端と第２のＰＮＰＩ−ランジスタのエミッタと
受話増巾器の正電源端子とコンデンサの１端と受話回路
を除く通話回路の１端を接続し、前記第１のＰＮＰ　ト
ランジスタのベースと第１のＮＰＩＩランジスタのコレ
クタを接続し、該第１のＮＰＮトランジスタのベースと
ダイヤルパルス発振回路の出力端子を接続し、前記抵抗
器の他端と前記第２のＰＮＰ）ランジスタのベースと第
２のＮＰＮトランジスタのコレクタを接続し、前記第２
ＯＮＰＮ）ランジスタのベースとダイヤルパルス発振回
路の制御出方端子を接続し、前記第２のＰＮＰトランジ
スタのコレクタと受話器の１端を接続し、前記受話器の
他端と受話増巾器の出力端子を接続し、該受話増巾器の
負電源端子と前記コンデンサの他端と定電流回路の一端
を接続し、第２の線路端子と前記ダイヤルパルス発振回
路の負電源端子と前記ｇｔのＮＰＮ）ランジスタのエミ
ッタと前記第２のＮＰＮ）ランジスタのエミッタと前記
定電流回路の他端と前記受話回路を除く通話回路の１端
を接続して構成さｎる。The present invention connects the first line terminal, the positive power supply terminal of the dial pulse oscillation circuit, and the emitter of the first PNP l-transistor, and connects the collector of the first PNP transistor, one end of the resistor, and the second PNP l-transistor. - Connect the emitter of the transistor, the positive power supply terminal of the receiving amplifier, one end of the capacitor, and one end of the speaking circuit excluding the receiving circuit, and connect the base of the first PNP transistor and the collector of the first NPII transistor. , the base of the first NPN transistor is connected to the output terminal of the dial pulse oscillation circuit, the other end of the resistor is connected to the base of the second PNP transistor, and the collector of the second NPN transistor is connected; Said second
ONPN) transistor's base and the control output terminal of the dial pulse oscillation circuit are connected, the collector of the second PNP transistor is connected to one end of the handset, and the other end of the handset is connected to the output terminal of the receiver amplifier. connect the negative power terminal of the receiver amplifier, the other end of the capacitor, and one end of the constant current circuit, and connect the second line terminal, the negative power terminal of the dial pulse oscillation circuit, and the NPN transistor of the gt. and the emitter of the second NPN transistor, the other end of the constant current circuit, and one end of the communication circuit other than the reception circuit are connected.

次に本発明の実施例について図面を参照して説明する。Next, embodiments of the present invention will be described with reference to the drawings.

第２図は本発明の１実施例の一部をブロックで示す構成
図で％ｌ及び２はそれぞれ巣ｌ。FIG. 2 is a block diagram showing a part of an embodiment of the present invention, and %l and 2 are nests 1, respectively.

第２の線路端子、３はダイヤルパルス発振回路。The second line terminal, 3, is a dial pulse oscillation circuit.

２１はダイヤルパルス発振回路３の出カド２ンジスタと
してのｆｉｌのＮＰＮトランジスタ、２２は該第１のト
ランジスタ１１の動作で制御される第１のＰＮＰ）ラン
ジスタ、　。21 is a fil NPN transistor as an output transistor of the dial pulse oscillation circuit 3; 22 is a first PNP transistor controlled by the operation of the first transistor 11;

イヤルパルス発振回路３の制御出力トランジスタとして
の第２のＮＰＮ）ランジスタ、２４は該トランジスタ２
３の動作で制御されるｗＪ２のＰＮＰトランジスタ、２
５はトランジスタ２４にバイアスを与える抵抗器、５は
受話器％６は受話増巾器、７は定電流回路、２６は受話
増巾検電源コンデンサ、４は受話回路を除いた通話回路
である。a second NPN) transistor as a control output transistor of the ear pulse oscillation circuit 3; 24 is the transistor 2;
PNP transistor of wJ2 controlled by the operation of 3, 2
5 is a resistor that biases the transistor 24, 5 is a receiver, 6 is a receiver amplifier, 7 is a constant current circuit, 26 is a power supply capacitor for detecting receiver amplifier, and 4 is a communication circuit excluding the receiver circuit.

そして第１の線路端子ｌとダイヤルパルス発振回路３の
正電源端子と、第１のＰＮＰ）？ンジスタ２２のエミッ
タを接続し、前記第１のＰＮＰトランジスタ２２のコレ
クタと抵抗器２５の１端と）と７受話回路を除く通話回
路４の１端を接続し、前記第１のＰＮＰトランジスタ２
２０ベースト第１のＮＰＮ）ランジスタ２１のコレクタ
を接続し。And the first line terminal l, the positive power supply terminal of the dial pulse oscillation circuit 3, and the first PNP)? The emitter of the first PNP transistor 22 is connected to the emitter of the first PNP transistor 22;
20 base first NPN) connect the collector of transistor 21.

９　第１　（Ｄ　Ｎ　Ｐ　Ｎ　）ランジスタ２１のベー
スとダイヤルパルス発振回路３の出力端子を接続し、前
記抵抗器２５の他端と前記第２のＰＮＰ　トランジスタ
２４０ベースとり第２ＯＮＰＮ）ランジスタ２３のコレ
クタを接続し、前記第２のＮＰＮ）ランラスタ２３０ペ
ースとダイヤルパルス発振回路３０制御出力端子を接続
し、前記第２のＰＮＰトランジスタ２４のコレクタと受
話器５のｌ端を接続し。9 Connect the base of the first (DNPN) transistor 21 and the output terminal of the dial pulse oscillation circuit 3, and connect the other end of the resistor 25 and the base of the second PNP transistor 240 to the collector of the second ONPN transistor 23. , the second NPN) run raster 230 pace and the control output terminal of the dial pulse oscillation circuit 30 are connected, and the collector of the second PNP transistor 24 and the l end of the handset 5 are connected.

前記受話器５の他端と受話増巾器６の出力端子を接続し
、該受話増巾器６の負電源端子と前記コンデンサ２６の
他端と２定電流回路７の一端を接続し、第２の線路端子
２と前記ダイヤルパルス発振スタ２３のエミッタと　前
記定電流回路７の他端り と、前記受話回路を除く通話回路４の１端を接続しであ
る。The other end of the receiver 5 is connected to the output terminal of the receiver amplifier 6, the negative power terminal of the receiver amplifier 6 is connected to the other end of the capacitor 26, and one end of the second constant current circuit 7 is connected. The line terminal 2 of the dial pulse generator 23 is connected to the emitter of the dial pulse oscillation star 23, the other end of the constant current circuit 7, and one end of the talking circuit 4 excluding the receiving circuit.

通話時はダイヤルパルス発振回路３０発振出力端子電圧
は発振回路の正電原電４Ｉｔになっているので、トラン
ジスタ２１及び２２は動作していて直流通話ループが小
米でいる。またダイヤルパルス発振回路３の制御出力端
子電圧も正電源電位になっているのでトランジスタ２３
．２４も動作している。During a call, the voltage at the oscillation output terminal of the dial pulse oscillation circuit 30 is the positive electric power of the oscillation circuit, so the transistors 21 and 22 are operating and the DC communication loop is closed. In addition, since the control output terminal voltage of the dial pulse oscillation circuit 3 is also at the positive power supply potential, the transistor 23
．． 24 is also in operation.

ダイヤル時にはダイヤルパルス発振回路３０発振出力端
子からはボタン入力相当のパルスが送出されその信号に
よってトランジスタ２２が接・断し、直接通話回路の直
流ループを断続することによって線路にダイヤル信号を
送出する。この時ダイヤルパルス発振回Ｗ＆３の制御出
力端子電圧り接地電位となり、トランジスタ２３．２４
共にＯＦＦ゛シ、受話器６にダイヤルクリック音が発生
するのを防いでいる。During dialing, a pulse equivalent to a button input is sent out from the oscillation output terminal of the dial pulse oscillation circuit 30, and the transistor 22 is connected/disconnected by the signal, and a dial signal is sent to the line by connecting and disconnecting the DC loop of the direct communication circuit. At this time, the control output terminal voltage of the dial pulse oscillation circuit W&3 becomes the ground potential, and the transistors 23 and 24
Both are turned OFF to prevent the dial click sound from being generated on the receiver 6.

この様に回路を構成することによシ直接直流大電流が流
れるトランジスタを１つにでき、トランジスタの数のみ
について言えば従来回路よ５１つ多くなるが、制御回路
に使用しているトランジスタの容量・耐圧は小さいもの
で艮く、総合的なコストダウンが計れることになる。By configuring the circuit in this way, the number of transistors through which a large direct current flows can be reduced to one, and although the number of transistors is 51 more than that of the conventional circuit, the capacity of the transistor used in the control circuit is・The pressure resistance is small, which means that overall cost reduction can be achieved.

また直流ループの断続を通話回路を通して行なっている
が、容量性の回路構成であ扛ば、メーク率等への影響は
現われない。通常は通話回路としては完全電子化された
回路を用いる。Furthermore, although the DC loop is connected and disconnected through the communication circuit, if the circuit configuration is capacitive, there will be no effect on the make rate or the like. Usually, a completely electronic circuit is used as the communication circuit.

本発明は以上説明したようにダイヤルパルス発振出力を
直接通話回路を断続して線路に送出することにより電話
機回路の価格を低減する効果がある。As explained above, the present invention has the effect of reducing the cost of the telephone circuit by directly transmitting the dial pulse oscillation output to the line by intermittent communication circuit.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来の電話機回路のブロック構成図、第２図は
本発明の一実施例を示すブロック構成図である。 １．２・・・・・・第１の線路端子、３・・・・・・ダ
イヤルノくルス発振回路、４・・・・・・通話回路、５
・・・・・・受話器、６・・・・・・受話増巾器、７・
−・・・・定電流回路、１１・・・・・・ダイヤルパル
ス発振出力トランジスタ、１２−・・・・・されるトラ
ンジスタ、２１・・・・・・グイヤＩレノぐ１し人発振
出力トランジスタ、２２・・・・・・トランジスタ２１
により制御されるトランジスタ、２３−・・・・ダイヤ
ルパルス発振回路の制御出力トランジスタ％　２４・・
・・・・トランジスタ２３に１９制御されるトランジス
タ、２５−−−−・・抵抗器、２６・・・・・・受話増
幅器電源コンデンサ。 誉１　面 豫２ｆＪFIG. 1 is a block diagram of a conventional telephone circuit, and FIG. 2 is a block diagram showing an embodiment of the present invention. 1.2...First line terminal, 3...Dial clock oscillation circuit, 4...Telephone circuit, 5
...Telephone receiver, 6...Reception amplifier, 7.
-...Constant current circuit, 11...Dial pulse oscillation output transistor, 12-...Transistor, 21...Guiya I Renogu1 Shiman oscillation output transistor , 22...transistor 21
Transistor controlled by 23-... Control output transistor of dial pulse oscillation circuit % 24...
. . . Transistor 19 controlled by transistor 23, 25 --- Resistor, 26 . . . Receiving amplifier power supply capacitor. Homare 1 Menyo 2fJ

Claims (1)

【特許請求の範囲】 第１の線路端子とダイヤルパルス発振回路の正電源端子
とｇｔのＰＮＰ）？ンジスタのエミッタを接続し、前記
第１のＰＮＰトランジスタのコレクタと抵抗器の１端と
第２のＰＮＰ）ランジスタのエミッタと受話増巾器の正
電源端子とコンデンサの一端と受話回路を除く通話回路
の１端を接続し、前記ｍｌのＰＮＰ）ランジスタのベー
スト第ｘｏＮＰＮ）？ンジスタのコレクタを接続し、該
＃！ｌのＮＰＮ）ランジスタのベースとダイヤルパルス
発振回路の出力端子を接続し、前記抵抗器の他端と前記
第２のＰＮＰ）ランジスタのベースと纂２（ＤＮＰＮト
ランジスタのコレクタを接続し。 前記第２ＯＮＰＮ）ランジスタのベースとダイヤルパル
ス発振回路の制御出力端子を接続し、前記ＩＫ２（ＤＰ
ＮＰ）ランジスタのコレクタと受話器の１端を接続し、
前記受話器の他端と受話増巾器の出力端子を接続し、該
受話増巾器の負電源端子と前記コンデンサの他端と足電
流回路の一端ｔ−接続し、第２の線路端子と前記ダイヤ
ルパルス発振回路の負電源端子と前記第１のＮＰＮ　）
ランジスタのエミッタと前記第２ＯＮＰＮＩ−ランジス
タのエミッタと前記足電流回路の他端と前記受話回路を
除く通話回路の１端全接続したことを特徴とする電話機
回路。[Claims] The first line terminal, the positive power supply terminal of the dial pulse oscillation circuit, and the PNP of gt)? connecting the emitter of the first PNP transistor, one end of the resistor, the second PNP transistor, the emitter of the first PNP transistor, the positive power supply terminal of the receiver amplifier, one end of the capacitor, and a communication circuit other than the receiver circuit; Connect one end of the ml PNP) to the base of the transistor xoNPN)? Connect the collector of the register and the corresponding #! Connect the base of the first NPN) transistor to the output terminal of the dial pulse oscillation circuit, and connect the other end of the resistor to the base of the second PNP) transistor and the collector of the second ONPN transistor. ) Connect the base of the transistor and the control output terminal of the dial pulse oscillation circuit, and
NP) Connect the collector of the transistor and one end of the receiver,
The other end of the receiver is connected to the output terminal of the receiver amplifier, the negative power terminal of the receiver amplifier and the other end of the capacitor are connected to one end of the foot current circuit, and the second line terminal and the the negative power supply terminal of the dial pulse oscillation circuit and the first NPN)
A telephone circuit characterized in that the emitter of the transistor, the emitter of the second ONPNI transistor, the other end of the foot current circuit, and one end of the communication circuit excluding the reception circuit are all connected.
JP21365083A 1983-11-14 1983-11-14 Telephone-set circuit Pending JPS60105353A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21365083A JPS60105353A (en) 1983-11-14 1983-11-14 Telephone-set circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21365083A JPS60105353A (en) 1983-11-14 1983-11-14 Telephone-set circuit

Publications (1)

Publication Number Publication Date
JPS60105353A true JPS60105353A (en) 1985-06-10

Family

ID=16642671

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21365083A Pending JPS60105353A (en) 1983-11-14 1983-11-14 Telephone-set circuit

Country Status (1)

Country Link
JP (1) JPS60105353A (en)

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