KR960009569A - Over-discharge prevention circuit of wireless phone portable device - Google Patents

Over-discharge prevention circuit of wireless phone portable device Download PDF

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Publication number
KR960009569A
KR960009569A KR1019940020222A KR19940020222A KR960009569A KR 960009569 A KR960009569 A KR 960009569A KR 1019940020222 A KR1019940020222 A KR 1019940020222A KR 19940020222 A KR19940020222 A KR 19940020222A KR 960009569 A KR960009569 A KR 960009569A
Authority
KR
South Korea
Prior art keywords
voltage
over
portable device
output
cpu
Prior art date
Application number
KR1019940020222A
Other languages
Korean (ko)
Other versions
KR0134936B1 (en
Inventor
이계욱
Original Assignee
배순훈
대우전자 주식회사
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 배순훈, 대우전자 주식회사 filed Critical 배순훈
Priority to KR1019940020222A priority Critical patent/KR0134936B1/en
Publication of KR960009569A publication Critical patent/KR960009569A/en
Application granted granted Critical
Publication of KR0134936B1 publication Critical patent/KR0134936B1/en

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Classifications

    • 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
    • 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

Landscapes

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

Abstract

본 발명은 무선전화기 휴대장치의 밧데리가 방전되어 거의 교신할 수 없는 상태가 되면 수신부로 공급하던 밧데리의 전원을 차단하고 CPU에만 전원을 공급할 수 있도록 한 무선전화기 휴대장치의 과방전 방지회로에 관한 것으로 밧데리와 CPU의 과방전 검출단자 사이에 접속되어 정상 전압이 안가될 때에는 출력을 발생시키지 않고 정상에 못미치는 전압이 인가될 때에는 출력이 접지측으로 접속되게 하는 리셋 IC와 상기 리셋 IC의 입출력 단자에 접속되어 소정전압 이상일 때는 ‘하이’를 공급하고 이하일 때는 역할을 하지 않는 풀-업 저항을 포함하여서 이루어진다.The present invention relates to an over-discharge prevention circuit of a mobile telephone portable device which can cut off the power of the battery supplied to the receiver and supply power only to the CPU when the battery of the mobile telephone portable device is discharged and becomes almost unreachable. Connected between the battery and the over-discharge detection terminal of the CPU, the output is connected to the reset IC and the input / output terminal of the reset IC so that the output is connected to the ground side when a voltage below the normal level is applied when a normal voltage is not applied. It includes a pull-up resistor that supplies a 'high' when above a predetermined voltage and does not play a role when below.

Description

무선전화기의 휴대장치의 과방전 방지회로Over-discharge prevention circuit of portable device of wireless telephone

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제2도는 본 발명 무선전화기의 휴대장치의 과방전 방지회로도.2 is an over-discharge prevention circuit of the portable device of the wireless telephone of the present invention.

Claims (1)

고정장치로부터의 벨신호를 감지하는 수신부와 상기 수신부와 CPU사이에 접속되어 수신부로의 전원공급을 스위칭시키는 스위칭부와 밧데리의 전원공급에 이해 동작하며 전화번호 등을 메모리시킬수 있는 CPU를 포함하여 구성되는 무선전화기의 휴대장치에 있어서 상기 밧데리와 CPU의 과방전 검출단자 사이에 접속되어 정상 전압이 안가될 때에는 출력을 발생시키지 않고, 정상에 못미치는 전압이 인가될 때에는 출력이 접지측으로 접속되게 하는 리셋 IC와, 상기 리셀 IC의 입출력 단자에 접속되어 소정전압 이상일 때는 ‘하이’를 공급하고 이하일 때는 역할을 하지 않는 풀-업 저항을 포함하여서 구성한 것을 특징으로 하는 무선전화기의 휴대장치의 과방전 방지회로.It includes a receiver that detects a bell signal from a fixed device, a switching unit that is connected between the receiver and the CPU and switches the power supply to the receiver, and a CPU capable of understanding the power supply of the battery and operating a memory for the telephone number. In a portable device of a radiotelephone, a reset is made between the battery and the over-discharge detection terminal of the CPU so that an output is not generated when a normal voltage is not applied, and the output is connected to the ground side when a voltage that is less than normal is applied. And a pull-up resistor connected to the input / output terminal of the res IC and configured to supply a 'high' when the voltage is higher than a predetermined voltage and does not play a role when the voltage is lower than the IC. . ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940020222A 1994-08-17 1994-08-17 Circuit for preventing over electro-discharge in a wireless phone KR0134936B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940020222A KR0134936B1 (en) 1994-08-17 1994-08-17 Circuit for preventing over electro-discharge in a wireless phone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940020222A KR0134936B1 (en) 1994-08-17 1994-08-17 Circuit for preventing over electro-discharge in a wireless phone

Publications (2)

Publication Number Publication Date
KR960009569A true KR960009569A (en) 1996-03-22
KR0134936B1 KR0134936B1 (en) 1998-04-27

Family

ID=19390487

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940020222A KR0134936B1 (en) 1994-08-17 1994-08-17 Circuit for preventing over electro-discharge in a wireless phone

Country Status (1)

Country Link
KR (1) KR0134936B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100342365B1 (en) * 1998-06-18 2002-11-11 국제약품공업주식회사 Manufacturing method of 2-[(2,6-dichlorophenyl) amino] phenylacetoxyacetic acid

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100342365B1 (en) * 1998-06-18 2002-11-11 국제약품공업주식회사 Manufacturing method of 2-[(2,6-dichlorophenyl) amino] phenylacetoxyacetic acid

Also Published As

Publication number Publication date
KR0134936B1 (en) 1998-04-27

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