KR900015480A - Power supply circuit of wireless modem - Google Patents

Power supply circuit of wireless modem Download PDF

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Publication number
KR900015480A
KR900015480A KR1019890004179A KR890004179A KR900015480A KR 900015480 A KR900015480 A KR 900015480A KR 1019890004179 A KR1019890004179 A KR 1019890004179A KR 890004179 A KR890004179 A KR 890004179A KR 900015480 A KR900015480 A KR 900015480A
Authority
KR
South Korea
Prior art keywords
power
power supply
terminal
wireless modem
power source
Prior art date
Application number
KR1019890004179A
Other languages
Korean (ko)
Inventor
유상선
Original Assignee
강진구
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 강진구, 삼성전자 주식회사 filed Critical 강진구
Priority to KR1019890004179A priority Critical patent/KR900015480A/en
Publication of KR900015480A publication Critical patent/KR900015480A/en

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Abstract

내용 없음.No content.

Description

무선 모뎀의 전원공급회로Power supply circuit of wireless modem

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

제2도는 본 발명에 따른 무선모뎀의 전원공급회로도,2 is a power supply circuit diagram of a wireless modem according to the present invention;

제3도는 본 발명의 구체회로도.3 is a detailed circuit diagram of the present invention.

Claims (1)

송신데이타 발생 및 수신데이타를 처리하며 제2전원을 발생하는 단말기와, 상기 단말기의 송신데이타를 RF신호로 변조하여 출력하며, 수신RF신호를 복조하여 상기 단말기로 출력하는 무선모뎀과, 외부전원인 제1전원을 발생하는 어댑터를 구비한 무선모뎀의 전원공급회로에 있어서, 상기 제1전원을 제1전원단자에 연결하고, 상기 제2전원을 RS-232C케이블중 미사용인 소정핀을 통해 제2전원단자에 연결하며, 상기 제1 또는 제2전원단자의 출력을 선택하는 스위치와, 상기 스위치의 출력전원을 정격화하여 상기 무선모뎀의 동작전원으로 공급하는 레귤레이터와, 상기 스위치의 출력단에 병렬 접속되어 상기 제1 또는 제2전원으로 예비전원인 제3전원을 충전하며, 상기 제1 또는 제2전원 이상시 제2전원을 상기 레귤레이터로 공급하는 배터리로 구성됨을 특징으로 하는 무선모뎀의 전원공급회로.A terminal for generating transmission power and receiving data and generating a second power source, a wireless modem for modulating and outputting transmission data of the terminal to an RF signal, demodulating the reception RF signal to the terminal, and an external power source. In a power supply circuit of a wireless modem having an adapter for generating a first power supply, the first power supply is connected to a first power supply terminal, and the second power supply is connected to a second through an unused predetermined pin among RS-232C cables. A switch that is connected to a power terminal and selects an output of the first or second power terminal, a regulator rated at the output power of the switch and supplied to an operating power of the wireless modem; and a parallel connection to an output terminal of the switch. And charges a third power source, which is a preliminary power source, to the first or second power source, and supplies a second power source to the regulator when the first or second power source is abnormal. Wireless modem power supply circuit of that. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019890004179A 1989-03-31 1989-03-31 Power supply circuit of wireless modem KR900015480A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019890004179A KR900015480A (en) 1989-03-31 1989-03-31 Power supply circuit of wireless modem

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019890004179A KR900015480A (en) 1989-03-31 1989-03-31 Power supply circuit of wireless modem

Publications (1)

Publication Number Publication Date
KR900015480A true KR900015480A (en) 1990-10-27

Family

ID=67776802

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019890004179A KR900015480A (en) 1989-03-31 1989-03-31 Power supply circuit of wireless modem

Country Status (1)

Country Link
KR (1) KR900015480A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100333799B1 (en) * 2000-06-03 2002-04-26 안순달 Device and method for generating trap message when cable modem is turn off

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100333799B1 (en) * 2000-06-03 2002-04-26 안순달 Device and method for generating trap message when cable modem is turn off

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