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KR970013827A - Malfunction prevention circuit of fixed device in radiotelephone - Google Patents

Malfunction prevention circuit of fixed device in radiotelephone Download PDF

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Publication number
KR970013827A
KR970013827A KR1019950026189A KR19950026189A KR970013827A KR 970013827 A KR970013827 A KR 970013827A KR 1019950026189 A KR1019950026189 A KR 1019950026189A KR 19950026189 A KR19950026189 A KR 19950026189A KR 970013827 A KR970013827 A KR 970013827A
Authority
KR
South Korea
Prior art keywords
voltage
fixed device
transistor
supply
radiotelephone
Prior art date
Application number
KR1019950026189A
Other languages
Korean (ko)
Inventor
권대헌
Original Assignee
김광호
삼성전자 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 김광호, 삼성전자 주식회사 filed Critical 김광호
Priority to KR1019950026189A priority Critical patent/KR970013827A/en
Priority to DE19630629A priority patent/DE19630629A1/en
Priority to IT96MI001765A priority patent/IT1283815B1/en
Publication of KR970013827A publication Critical patent/KR970013827A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Transceivers (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Transmitters (AREA)
  • Electronic Switches (AREA)
  • Protection Of Static Devices (AREA)

Abstract

1. 청구범위에 기재된 발명이 속한 기술분야 : 무선전화기의 고정장치에서 오동작 방지회로.1. Technical field to which the invention described in the claims belongs: Malfunction prevention circuit in the fixing device of the radiotelephone.

2. 발명이 해결하려고 하는 기술적 과제 : 베터리 비실장형 무선전화기의 고정장치에서 불안정한 전압이 입력될 시 메모리에 해당하는 EEPROM이 클리어되거나 고정장치를 제어하는 MPU가 이상동작을 하였다.2. Technical problem to be solved by the present invention: When an unstable voltage is inputted in a fixed device of a batteryless non-mounted wireless telephone, the EEPROM corresponding to the memory is cleared or the MPU controlling the fixed device has an abnormal operation.

3. 발명의 해결방법의 요지 : 베터리 비실장형 무선전화기의 고정장치에서 불안정한 전압이 입력될 시 고정장치로 입력되는 동작전압을 차단하고, 설정 전압 이상이 입력될 시 정상적인 동작전압을 공급하는 오동작 방지회로.3. Summary of Solution of the Invention: When the unstable voltage is input in the fixed device of the non-battery-type wireless telephone, it blocks the operation voltage input to the fixing device and prevents the malfunction of supplying the normal operation voltage when the setting voltage is input over the setting voltage. Circuit.

4. 발명의 중요한 용도 : 무선전화기의 고정장치.4. Significant use of the invention: Fixtures for cordless telephones.

Description

무선전화기에서 고정장치의 오동작 방지회로Malfunction prevention circuit of fixed device in radiotelephone

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

제1도는 본 발명에 따른 무선전화기에서 고정장치의 오동작 방지회로,1 is a malfunction prevention circuit of the fixing device in the radiotelephone according to the present invention,

제2도는 본 발명에 따른 오동작 방지회로에서 입력전압에 따른 출력전압의 특성도,2 is a characteristic diagram of an output voltage according to an input voltage in a malfunction preventing circuit according to the present invention;

제3도는 본 발명에 따른 오동작 방지회로에 사용되는 트랜지스터의 특성곡선.3 is a characteristic curve of a transistor used in a malfunction preventing circuit according to the present invention.

Claims (3)

베터리를 사용하지 않고 정류수단을 사용하여 동작전압을 공급하는 무선전화기의 고정장치에서 비안정 전원이 공급될 시 전원을 차단하여 오동작을 방지하는 회로에 있어서, 상기 정류수단으로부터 공급되는 전압을 설정비율로 분압하여 분압된 전압을 출력하는 분압수단과, 상기 분압수단으로부터 제공되는 분압전압에 따라 상기 고정장치로의 동작 전압 공급을 제어하는 전압제어수단으로 구성됨을 특징으로 하는 오동작 방지회로.A circuit for preventing malfunction by cutting off power when a non-stable power supply is provided in a stationary device of a radiotelephone which supplies a working voltage using a rectifying means without using a battery, wherein the voltage supplied from the rectifying means is set at a predetermined ratio. And voltage dividing means for dividing the voltage into a voltage dividing means for outputting the divided voltage and controlling the supply of the operating voltage to the fixed device in accordance with the voltage dividing voltage provided from the voltage dividing means. 제1항에 있어서, 상기 전압제어 수단은, 상기 분압수단으로부터 제공되는 분압전압을 입력으로 받아 턴온 및 턴오프되는 제1트랜지스터와, 상기 제1트랜지스터의 콜렉터단에 연결되며, 상기 제1트랜지스터가 턴온 및 턴오프됨에 대응하여 상기 고정장치로의 동작전압 공급을 제어하는 제2트랜지스터로 구성됨을 특징으로 하는 오동작 방지회로.The voltage transistor of claim 1, wherein the voltage control means is connected to a first transistor turned on and off by receiving a divided voltage provided from the voltage dividing means, and connected to a collector terminal of the first transistor, wherein the first transistor is connected to the first transistor. And a second transistor for controlling the supply of an operating voltage to the fixed device in response to being turned on and off. 제1항에 있어서, 상기 전압제어 수단은, 상기 분압수단으로부터 설정레벨 이하의 분압전압이 공급될 시 상기 고정장치로의 동작전압 공급을 차단하는 차단수단과, 상기 분압수단으로부터 설정레벨 이상의 분압전압이 공급될 시 상기 고정장치로 안정된 동작전압을 공급하는 공급수단으로 구성됨을 특징으로 하는 오동작 방지회로.2. The voltage control means according to claim 1, wherein the voltage control means comprises: blocking means for interrupting supply of the operating voltage to the fixed device when a divided voltage below the set level is supplied from the voltage divider, and a divided voltage higher than the set level from the voltage divider. And a supply means for supplying a stable operating voltage to the fixed device when it is supplied. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950026189A 1995-08-23 1995-08-23 Malfunction prevention circuit of fixed device in radiotelephone KR970013827A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1019950026189A KR970013827A (en) 1995-08-23 1995-08-23 Malfunction prevention circuit of fixed device in radiotelephone
DE19630629A DE19630629A1 (en) 1995-08-23 1996-07-29 Faulty operation prevention circuit especially for setting apparatus in cordless telephone
IT96MI001765A IT1283815B1 (en) 1995-08-23 1996-08-21 CIRCUIT TO PREVENT INCORRECT OPERATION OF A FIXING EQUIPMENT IN A WIRELESS PHONE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950026189A KR970013827A (en) 1995-08-23 1995-08-23 Malfunction prevention circuit of fixed device in radiotelephone

Publications (1)

Publication Number Publication Date
KR970013827A true KR970013827A (en) 1997-03-29

Family

ID=19424272

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950026189A KR970013827A (en) 1995-08-23 1995-08-23 Malfunction prevention circuit of fixed device in radiotelephone

Country Status (3)

Country Link
KR (1) KR970013827A (en)
DE (1) DE19630629A1 (en)
IT (1) IT1283815B1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2931436C2 (en) * 1979-08-02 1981-08-20 Siemens AG, 1000 Berlin und 8000 München Circuit arrangement for monitoring an input voltage
DE3203050C1 (en) * 1982-01-30 1983-01-27 Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt Circuit arrangement for subscriber telephone sets powered via the subscriber line with electronic control and switching means in telecommunications systems, in particular telephone systems
DE3612823A1 (en) * 1986-04-14 1987-10-15 Deutsche Telephonwerk Kabel Circuit arrangement for feeding electrically erasable and programmable non-volatile memories in telephone terminals
US5384842A (en) * 1990-02-08 1995-01-24 Chesilvale Electronics Limited Programmable telephone

Also Published As

Publication number Publication date
ITMI961765A1 (en) 1998-02-21
ITMI961765A0 (en) 1996-08-21
DE19630629A1 (en) 1997-02-27
IT1283815B1 (en) 1998-04-30

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PA0109 Patent application

Patent event code: PA01091R01D

Comment text: Patent Application

Patent event date: 19950823

PA0201 Request for examination

Patent event code: PA02012R01D

Patent event date: 19950823

Comment text: Request for Examination of Application

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Comment text: Notification of reason for refusal

Patent event date: 19980331

Patent event code: PE09021S01D

PC1902 Submission of document of abandonment before decision of registration
SUBM Surrender of laid-open application requested