KR910000378Y1 - Cordless phone ringing signal generating circuit - Google Patents

Cordless phone ringing signal generating circuit Download PDF

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Publication number
KR910000378Y1
KR910000378Y1 KR2019860018571U KR860018571U KR910000378Y1 KR 910000378 Y1 KR910000378 Y1 KR 910000378Y1 KR 2019860018571 U KR2019860018571 U KR 2019860018571U KR 860018571 U KR860018571 U KR 860018571U KR 910000378 Y1 KR910000378 Y1 KR 910000378Y1
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South Korea
Prior art keywords
transistor
resistor
diode
inverter
circuit
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KR2019860018571U
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Korean (ko)
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KR880010915U (en
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유재석
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대우전자 주식회사
김용원
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/725—Cordless telephones
    • H04M1/72502—Cordless telephones with one base station connected to a single line
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2201/00—Electronic components, circuits, software, systems or apparatus used in telephone systems
    • H04M2201/02—Diodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2201/00—Electronic components, circuits, software, systems or apparatus used in telephone systems
    • H04M2201/04—Transistors

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Transmitters (AREA)
  • Devices For Supply Of Signal Current (AREA)

Abstract

내용 없음.No content.

Description

무선전화기 호출신호 발생회로Wireless telephone call signal generation circuit

제1도는 본 고안의 회로도이다.1 is a circuit diagram of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

RD : 역전압 검출 다이오드 Osc : 750Hz 발진회로RD: Reverse voltage detection diode Osc: 750Hz oscillation circuit

Tx : 송신회로 DEV : 변조회로Tx: Transmitter Circuit DEV: Modulation Circuit

본 고안은 일반 무선전화기에 있어, 고정장치에서 이동장치를 호출할 때 인버터에 의해 750Hz의 발진회로를 온 또는 오프시켜, 고정장치에 발생되는 벨신호를 이동장치가 접수 할 수 있도록 한 무선전화기의 호출신호 발생회로에 관한 것으로서, 본 고안은 무선전화기의 고정장치가 발진회로에 전압을 가해 동작시키고, 또한 송신회로를 동작시켜 변조된 벨신호를 안테나를 통해 내보냄으로서 이동장치가 변조된 벨신호를 정확히 수신하고, 또한 스위치 상단에 물체가 잘못올려져 있을 때 발생하는 계속발진의 현상을 제거하는데, 본 고안의 목적이 있다.The present invention is a general wireless telephone, in which the oscillating circuit of 750Hz is turned on or off by the inverter when calling the mobile device from the fixed device, so that the mobile device can receive the bell signal generated by the fixed device. The present invention relates to a call signal generating circuit, and the present invention provides a fixed device of a wireless telephone apparatus by applying a voltage to an oscillating circuit, and also by operating a transmitting circuit to send a modulated bell signal through an antenna, thereby causing the mobile device to output a modulated bell signal. It is an object of the present invention to accurately receive and to eliminate the phenomenon of continuous oscillation that occurs when an object is incorrectly placed on the top of a switch.

첨부된 도면에 의거하여 본 고안의 구성 및 작용효과를 상세히 설명하면 다음과 같다.Referring to the configuration and operation of the present invention in detail based on the accompanying drawings as follows.

스위치(SW1)의 한쪽 단자는 전원(B+)과 접속되고, 스위치(SW1)의 다른 한쪽 단자는 저항(R1)을 통해 전원과 접속된 인버터(Q1)이 입력단자에 접속되었고 상기 인버터(Q1)는 저항(R2)을 통해 입력단자와 출력단자가 접속되어 있으며, 인버터(Q1)의 출력단자는 저항(R3), 콘덴서(C1)와 다이오드(D2)를 통해 에미터가 접지되고, 전화선과 연결된 트랜지스터(Q2)의 베이스와 접속되었고, 다이오드(D2)의 캐소우드와 콘덴서(C1)사이에는 접지된 다이오드(D1)를 두고, 다이오드(D2)의 애노우드쪽에는 전원(B+)과 연결된 저항(R4)과 접지된 콘덴서(C2)를 두었다.One terminal of a switch (SW 1) is connected with power (B +), switch the other terminal of the (SW 1) is a resistance (R 1) a power supply and connected inverters (Q 1) this was connected to the input terminal through The inverter Q 1 is connected to an input terminal and an output terminal through a resistor R 2 , and the output terminal of the inverter Q 1 is connected to a resistor R 3 , a capacitor C 1 , and a diode D 2 . The emitter is grounded and connected to the base of transistor Q 2 connected to the telephone line, with a grounded diode D 1 between the cathode of diode D 2 and capacitor C 1 , and diode D 2. On the anode side, the resistor (R 4 ) connected to the power supply (B + ) and the grounded capacitor (C 2 ) were placed.

또한, 트랜지스터(Q2)의 콜렉터는 콘덴서(C3)를 통해 트랜지스터(Q2)의 베이스, 저항(R4)과 접지된 콘덴서(C4)와 저항(R7)을 거쳐 출력단자가 저항(R8)을 통해 에미터가 전원(B-)와 접속되고, 콜렉터는 저항(R10)을 통해 송신회로(Tx)와 접속된 트랜지스터(Q4)의 베이스와 접속된 인버터(Q3)의 입력단자 발진회로내의 트랜지스터(Q5)의 콜랙터와 접속되고, 저항(R9)을 통해 전원과 연결된 다이오드(D3)의 캐소우드쪽과 저항(R5)을 통해 전원과 연결되어 구성되는 것을 특징으로 하는 회로이다.In addition, the collector of the transistor (Q 2) the output terminal resistance through a capacitor (C 3) a transistor grounded capacitor and the base, the resistor (R 4) a (Q 2) (C 4) and a resistor (R 7) through ( through R 8) emitter, the power (B - is connected with), the collector of the inverter (Q 3) connected to the base of a transistor (Q 4) connected to the transmitting circuit (Tx) via a resistor (R 10) It is connected to the collector of the transistor (Q 5 ) in the input terminal oscillation circuit, and is connected to the power supply through the resistor (R 5 ) and the cathode side of the diode (D 3 ) connected to the power supply through the resistor (R 9 ) It is a circuit characterized by the above-mentioned.

이와 같은 구성의 본 고안회로의 스위치,(SW1)이 개방상태에 있을 때 인버터(Q1)의 입력이 0(영)인 경우는, 인버터(Q1)의 출력이 “H”가 되나, 트랜지스터(Q2)의 베이스에는 다이오드(D2)로 인해 하등이 영향을 미치지 못하므로, 트랜지스터(Q2)는 도통상태가 되어, 발진회로(Osc)의 동작을 중지시킨다.When the input of the inverter Q 1 is 0 (zero) when the switch SW 1 of the present invention circuit having such a configuration is in an open state, the output of the inverter Q 1 becomes “H”, Since the base of the transistor (Q 2) has not reached the lower the influence due to the diode (D 2), thereby the transistor (Q 2) is in a conductive state, it stops the operation of the oscillator (Osc).

한편 트랜지스터(Q2)의 도통상태는 인버터(Q3)의 출력을 “H”상태로 만들게 되어 트랜지스터(Q4)는 동작하지 않아, 호출신호는 발생하지 않는다.On the other hand, the conduction state of the transistor Q 2 causes the output of the inverter Q 3 to be in the "H" state, so that the transistor Q 4 does not operate and no call signal is generated.

그러나 스위치(SW1)이 연결되면 인버터(Q1)의 출력은 “L”가 되므로, 트랜지스터(Q2)의 베이스전위는 “0”이된다.However, when the switch SW 1 is connected, the output of the inverter Q 1 becomes “L”, so the base potential of the transistor Q 2 becomes “0”.

따라서 트랜지스터(Q2)는 동작을 하지 않으나, 콜렉터의 전위가(하이)상태에 있으므로, 발진회로(Osc)의 트랜지스터(Q5)가 도통하게 되어 발진회로(Osc)는 동작하게 되는 한편, 인버터(Q3)의 출력은 0(영) 상태가 되어, 트랜지스터(Q4)를 동작시킨다.Therefore, the transistor Q 2 does not operate, but since the potential of the collector is in a high state, the transistor Q 5 of the oscillation circuit Osc becomes conductive so that the oscillation circuit Osc operates, while the inverter The output of (Q 3 ) becomes a zero (zero) state to operate the transistor Q 4 .

따라서 750Hz발진신호는 변조되어 송신회로(Tx)이 공급되므로서, 호출부호를 발생시킨다.Therefore, the 750 Hz oscillation signal is modulated to supply the transmission circuit Tx, thereby generating a call sign.

만약 스위치(SW1)가 계속 연결상태에 있더라도 트랜지스터(Q2)의 베이스 전압은 베이스와 연결되어 있는 저항 R3,R4의 시정수에 의하여 일정시간이 경과한후에는 콘덴서(C2)가 방전하여 트랜지스터(Q2)의 베이스 전위 상승하여 트랜지스터(Q2)는 도통하게 되므로, 스위치(SW1)가 오프(off)상태에 있는 것과 같은 상태가 되어, 호출신호를 발생시키지 않는다.If the switch (SW 1) is still connected even if the state base voltage of the transistor (Q 2) is the elapsed hanhue predetermined time by the time constant of the resistor R 3, R 4 that are connected to the base discharge the capacitor (C 2) and because it is conductive to increase the base potential of the transistor (Q 2) transistors (Q 2), the switch (SW 1) is the state, as in the off (off) state, it does not generate a ringing signal.

상기와 같이 본 고안은 인버터, 트랜지스터, 다이오드등을 구비한 회로를 구성하여 무선전화기의 고정장치에서 이동상태를 호출하는 벨신호를 송출할 수 있고, 일단 한번 벨신호를 송출하고 나면 스위치(SW1)의 위치에 관계없이 벨신호가 계속 발진하지 못하도록 하는 장점이 있다.As described above, the present invention constitutes a circuit having an inverter, a transistor, a diode, and the like, and transmits a bell signal for calling a moving state in a stationary device of a radiotelephone. Once the bell signal is transmitted, a switch (SW 1 Regardless of the position of), there is an advantage that the bell signal cannot be started continuously.

Claims (1)

스위치(SW1)의 일측은 전원과 접속되고, 타측은 저항(R1)을 통해 전원과 접속되고, 저향(R2)로 입출력단이 접속된 인버터(Q1)의 입력단자에 접속되었고, 상기 인버터(Q1)이 출력단자는 저항(R3) 콘덴서(C1)와 다이오드(D2)를 통해 에미터가 접지된 트랜지스터(Q2)의 베이스와 접속 되었으며, 다이오드(D2)를 통해 에미터가 접지된 트랜지스터(Q2)의 베이스와 접속 되었으며, 다이오드(D2)이 캐소우드와 콘덴서(C1)사이에는 다이오드(Q1)을 두어 접지된 콘덴서(C2) 및 전화선이 연결되었으며, (Q2)의 콜렉터는 저항(R6)접지된 콘덴서(C4)와 저항(R7)을 거쳐, 출력단자가 저항(R8)을 통해 에미터가 전원과 접속되고 콜렉터는 저항(R10)을 통해 송신회로와 연결된 트랜지스터(Q4)의 베이스와 접속된 인버터(Q3)의 입력단자에 연결되었으며, 트랜지스터(Q2)의 콜렉터에 접속된 저향(R5)는 전원과 다이오드(D3)는 발진회로의 트랜지스터(Q5)의 콜렉터와 연결하여된 것을 특징으로 하는 무선전화기의 호출신호 발생회로. One side of the switch SW 1 is connected to a power supply, the other side is connected to a power supply through a resistor R 1 , and is connected to an input terminal of an inverter Q 1 having an input / output terminal connected to the bottom end R 2 , The output terminal of the inverter Q 1 is connected to the base of the transistor Q 2 having the emitter grounded through the resistor R 3 , the capacitor C 1 , and the diode D 2 , and through the diode D 2 . The emitter is connected to the base of the grounded transistor (Q 2 ) and the diode (D 2 ) has a diode (Q 1 ) between the cathode and the capacitor (C 1 ) so that the grounded capacitor (C 2 ) and the telephone line are connected. The collector of (Q 2 ) is connected via a resistor (R 6 ) grounded capacitor (C 4 ) and a resistor (R 7 ), the output terminal is connected to the emitter via a resistor (R 8 ), and the collector is connected to a resistor ( R 10 ) is connected to the input terminal of the inverter (Q 3 ) connected to the base of the transistor (Q 4 ) connected to the transmitting circuit, the transistor Resonator (R 5 ) is connected to the collector of the generator (Q 2 ), the power supply and the diode (D 3 ) is connected to the collector of the transistor (Q 5 ) of the oscillation circuit, the call signal generating circuit of the radiotelephone.
KR2019860018571U 1986-11-27 1986-11-27 Cordless phone ringing signal generating circuit KR910000378Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019860018571U KR910000378Y1 (en) 1986-11-27 1986-11-27 Cordless phone ringing signal generating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019860018571U KR910000378Y1 (en) 1986-11-27 1986-11-27 Cordless phone ringing signal generating circuit

Publications (2)

Publication Number Publication Date
KR880010915U KR880010915U (en) 1988-07-28
KR910000378Y1 true KR910000378Y1 (en) 1991-01-18

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Application Number Title Priority Date Filing Date
KR2019860018571U KR910000378Y1 (en) 1986-11-27 1986-11-27 Cordless phone ringing signal generating circuit

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Publication number Publication date
KR880010915U (en) 1988-07-28

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