KR950016286A

KR950016286A - Clock counter automatic switching device of TV receiver

Info

Publication number: KR950016286A
Application number: KR1019930024296A
Authority: KR
Inventors: 최동수
Original assignee: 배순훈; 대우전자 주식회사
Priority date: 1993-11-16
Filing date: 1993-11-16
Publication date: 1995-06-17

Abstract

본 발명은 텔레비젼 수상기의 클럭 카운터 자동절환장치에 관한 것으로서, 입력되는 교류전원의 동작 주파수를 정확히 판별하고 이 판별된 결과에 따라 시스템과 일치되는 동작 주파수를 자동으로 절환한 것으로 본 발명의 특징을 전원플로그 (F)로부터 입력되는 교류전원 주파수 크기를 감쇄하는 감쇄회로수단(10)과, 이 감쇄회로수단(10)에서 인가되는 동작 주파수를 동작전압으로 변환하는 주파수-전압변환수단(20). 이 주파수-전압변환수단(20)에서 출력되는 제어전압 레벨에 의해 작동되는 스위칭 수단(37), 이 스위칭 수단(30)의 스위칭 동작에 의해 작동되어 60Hz용 클럭 카운터 중 어느 하나를 선택하여 시스템과 일치되는 동작 주파수를 공급할 수 있도록 하는 클럭 카운터 제어수단(40)으로 이루어짐을 특징으로 한다.The present invention relates to a clock counter automatic switching device of a television receiver, which accurately determines an operating frequency of an input AC power source and automatically switches an operating frequency corresponding to a system according to the determined result. Attenuation circuit means (10) for attenuating the magnitude of the AC power frequency input from the plug (F), and frequency-voltage conversion means (20) for converting an operating frequency applied from the attenuation circuit means (10) to an operating voltage. The switching means 37 operated by the control voltage level output from the frequency-voltage converting means 20 and the switching means of the switching means 30 are selected to select any one of the 60 Hz clock counters. It is characterized by consisting of a clock counter control means 40 to supply a matching operating frequency.

Description

Clock counter automatic switching device of TV receiver

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

제1도는 본 발명에 따른 텔레비젼 수상기의 클럭 카운터 자동절환장치를 나타낸 도면.1 is a diagram showing a clock counter automatic switching device of a television receiver according to the present invention.

Claims

Attenuation circuit means 10 for attenuating the magnitude of the AC power frequency input from the power plug F, frequency-voltage converting means 20 for converting an operating frequency applied from the attenuation circuit means 10 to an operating voltage, The switching means 30 which is operated by the control voltage level output from the frequency-voltage converting means 20, which is operated by the switching operation of the switching means 30, is used for either the 60 Hz clock counter or the 50 Hz clock counter. And a clock counter control means (40) for selecting and supplying an operating frequency consistent with the system.

The television set as claimed in claim 1, characterized in that the frequency-voltage converting means (27) is configured to supply a low level signal when the input AC power frequency is 50 Hz and to supply a high level signal when the AC power frequency is 60 Hz. Clock counter automatic switching device of the receiver.

The method of claim 1. And said clock counter control means (40) comprises a field effect transistor (FET1-FET2).

※ Note: The disclosure is based on the initial application.