KR900010136Y1 - Telephone battery discharge displaying circuit - Google Patents

Telephone battery discharge displaying circuit Download PDF

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Publication number
KR900010136Y1
KR900010136Y1 KR2019860012979U KR860012979U KR900010136Y1 KR 900010136 Y1 KR900010136 Y1 KR 900010136Y1 KR 2019860012979 U KR2019860012979 U KR 2019860012979U KR 860012979 U KR860012979 U KR 860012979U KR 900010136 Y1 KR900010136 Y1 KR 900010136Y1
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KR
South Korea
Prior art keywords
battery
resistor
resistance
amplifier
led
Prior art date
Application number
KR2019860012979U
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Korean (ko)
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KR880005428U (en
Inventor
유재석
Original Assignee
대우전자 주식회사
김용원
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.)
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Application filed by 대우전자 주식회사, 김용원 filed Critical 대우전자 주식회사
Priority to KR2019860012979U priority Critical patent/KR900010136Y1/en
Publication of KR880005428U publication Critical patent/KR880005428U/en
Application granted granted Critical
Publication of KR900010136Y1 publication Critical patent/KR900010136Y1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/08—Current supply arrangements for telephone systems with current supply sources at the substations
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2201/00—Electronic components, circuits, software, systems or apparatus used in telephone systems
    • H04M2201/38—Displays
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2215/00—Metering arrangements; Time controlling arrangements; Time indicating arrangements
    • H04M2215/81—Notifying aspects, e.g. notifications or displays to the user
    • H04M2215/8129—Type of notification
    • H04M2215/8141—Optical, e.g. flashing indication of a lamp, icon, soft-key or symbol

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Transceivers (AREA)

Abstract

내용 없음.No content.

Description

무선전화기의 밧데리 로우(BATTERY LOW) 표시회로Battery low display circuit of cordless phone

제1도는 종전 밧데리 로우 표시회로.1 is a conventional battery low display circuit.

제2도는 본 고안 밧데리 로우 표시회로.2 is a battery low display circuit of the present invention.

제3도는 본 고안에서 이용되는 IC의 내부 블럭도.3 is an internal block diagram of an IC used in the present invention.

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

2 : 액티브 휠터 앰프2: active filter amplifier

본 고안은 무선전화기의 밧데리 로우 표시장치에 관한 것으로서 밧데리가 내장된 무선전화기에서 IC내부의 사용치 않는 액티브 훨터 앰프(active filter amp)를 이용하여 내장된 밧데리의 전압이 규정치 이하로 내려가면 자동으로 LED램프가 커지도록하여 밧데리가 소모되었음을 통화자에게 알려주도록 한 것이다.The present invention relates to a battery-low display device of a cordless telephone. In a cordless telephone with a built-in battery, an unused active filter amp inside the IC is used to automatically lower the voltage of the built-in battery. The LED lamp is made bigger so that the caller is notified that the battery is exhausted.

모든 무선전화기에는 밧데리가 내장되어 있어서 사용중 밧데리가 규정치 이하로 방전이 되면 전화기는 사용이 불가능하여진다.All cordless phones have a built-in battery, so if the battery is discharged below the specified value, the phone cannot be used.

따라서 현재 사용중인 모든 무선전화기에는 밧데리가 소모되어 통화가 끊기는 것을 방지하기 위하여 제1도와 같은 밧데리 로우 표시장치가 있다.Therefore, all cordless telephones currently in use have a battery row display as shown in FIG.

그러나 이와같은 밧데리 표시장치는 별도의 트랜지스터 및 다수개의 저항을 사용하여야 하였다.However, such a battery display had to use a separate transistor and a plurality of resistors.

본 고안은 상기와 같이 별도의 트랜지스터를 사용하지 않고 기존 무선전화기내부에 내장된 IC의 사용치 않는 액티브 훨터 앰프 및 4개의 저항을 이용하여 밧데리가 규정전압 이하로 소모되면 LED램프가 커지도록한 것으로 이하 첨부도면에 의하여 상세히 설명하면 다음과 같다.The present invention is to use LEDs and active resistors that do not use a separate transistor as described above, and to use the active IC and the four resistors of the IC built in the existing radiotelephone to increase the LED lamp when the battery is below the specified voltage When described in detail by the accompanying drawings as follows.

공지의 무선전화기에 내장된 IC의 사용치 않는 액티브 휠터 앰프(2)의 출력단에는 저항 R2, R4를 연결하여 저항 R4는 발광다이오드 LED1과 연결 그라운드되며, 저항 R2는 액티브 훨터 앰프(2)의 입력단에 연결된다.Resistor R 2 and R 4 are connected to the output terminal of the active filter amplifier 2 which is not used in the IC of a known radiotelephone, and the resistor R 4 is connected to the light emitting diode LED 1, and the resistor R 2 is an active multer amplifier. It is connected to the input terminal of (2).

또한 액티브 훨터 앰프(2) 입력단에는 저항 R3및 R1이 연결되어 저항 R3는 LD1과 함께 그라운드되고 저항 R1은 밧데리 전원과 연결된다.In addition, resistors R 3 and R 1 are connected to the input of the active flatter amplifier 2 so that resistor R 3 is grounded together with LD 1 and resistor R 1 is connected to the battery power supply.

본 회로에서 저항 R3는 LED1의 동작전압을 결정하는 저항이고 R2는 증폭도 설정용이다.In this circuit, resistor R 3 is a resistor that determines the operating voltage of LED 1 and R 2 is for setting amplification degree.

이와같은 본 고안의 회로에 있어 액티브 훨터 앰프(2)는 자동증폭기로서 입력전압은의 공식에 의한 전압이 공급된다.In the circuit of the present invention, the active multer amplifier 2 is an automatic amplifier, and the input voltage is The voltage is given by the formula

따라서 실제 무선전화기에서 B+단자에 직류 4V가 공급되고 이 전압은 저항 R1, R3에 의해 분해되어 -3V가 액티브 훨터 앰프(2)의 입력단에 공급된다고 가정할 때 출력단에는 -1V의 전류가 흘러 LED1은 커지지 않는다.Therefore, in the actual radio telephone, and the direct current 4V supplied to the B + terminal voltage is a resistor R 1, R 3 is decomposed by the -3V active hwolteo current output terminal of -1V, assuming that supply to the input of the amplifier (2) LED 1 does not go through.

또한 B+전원이 3,4V이하가되면 LED1이 커지도록 구성이 되었다고 가정하고, 밧데리전원이 소모되어 3V로 공급되어 저항 R1및 R3에 의해 분해되고 액티브 훨터 앰프(2) 입력단에 -V의 전원이 입력된다고 가정하면, 액티브 훨터 앰프(2)의 출력단에는 +1V의 전류가 흘러 LED1이 점등되며, 밧데리가 소모되었음을 알려주는 것이다.It is also assumed that when the B + power supply is less than 3,4V, the LED 1 is configured to be large, and the battery power is consumed and supplied to 3V, which is disassembled by the resistors R 1 and R 3 , and is -V at the input of the active flatter amplifier 2. Assuming that the power is supplied, the output terminal of the active functor amplifier 2 has a current of + 1V, LED 1 is turned on, indicating that the battery is exhausted.

이상과 같이 본 고안의 별도의 트랜지스터와 같은 부품을 사용하지 않고 기존 무선전화기에 내장되어 있는 부품을 사용함으로서 회로자체가 간단하여지며, 원가절감은 물론 정확하게 밧데리의 로우 상태를 표시하여주는 특징이 있다.As described above, the circuit itself is simplified by using the parts embedded in the existing wireless telephone without using the same components as the separate transistor of the present invention, and it has the characteristic of displaying the low state of the battery accurately as well as the cost reduction. .

Claims (1)

공지의 무선전화기에 내장된 IC의 액티브 훨터 앰프(2) 출력단에는 저항 R2, R4를 연결하여 저항 R4는 LED1과 연결 그라운드시키고 저항 R2는 입력단에 연결하며, 입력단에는 다시 전압분배용 저항 R3및 R1을 연결하여 저항 R3는 LED1과 함께 그라운드시키고 저항 R1은 밧데리 전원과 연결하여서된, 무선전화기의 밧데리 로우 표시장치.Of an IC built in a known cordless phone active hwolteo amplifier (2), an output terminal, the resistance R 2, R 4 to connect the resistor R 4 is and connect the ground and the LED 1 a resistance R 2 is and connected to the input, the input is again the voltage division for resistance R 3, and by connecting a resistance R 1 R 3 are the low battery display apparatus of, the wireless telephone hayeoseo ground with the LED 1 and resistor R 1 is connected to the battery power source.
KR2019860012979U 1986-08-26 1986-08-26 Telephone battery discharge displaying circuit KR900010136Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019860012979U KR900010136Y1 (en) 1986-08-26 1986-08-26 Telephone battery discharge displaying circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019860012979U KR900010136Y1 (en) 1986-08-26 1986-08-26 Telephone battery discharge displaying circuit

Publications (2)

Publication Number Publication Date
KR880005428U KR880005428U (en) 1988-05-12
KR900010136Y1 true KR900010136Y1 (en) 1990-10-31

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019860012979U KR900010136Y1 (en) 1986-08-26 1986-08-26 Telephone battery discharge displaying circuit

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KR (1) KR900010136Y1 (en)

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Publication number Publication date
KR880005428U (en) 1988-05-12

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