JPH0191385U - - Google Patents

Info

Publication number
JPH0191385U
JPH0191385U JP18820087U JP18820087U JPH0191385U JP H0191385 U JPH0191385 U JP H0191385U JP 18820087 U JP18820087 U JP 18820087U JP 18820087 U JP18820087 U JP 18820087U JP H0191385 U JPH0191385 U JP H0191385U
Authority
JP
Japan
Prior art keywords
picture tube
brightness
cathode
varying
circuit
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
JP18820087U
Other languages
English (en)
Other versions
JPH079193Y2 (ja
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 filed Critical
Priority to JP18820087U priority Critical patent/JPH079193Y2/ja
Publication of JPH0191385U publication Critical patent/JPH0191385U/ja
Application granted granted Critical
Publication of JPH079193Y2 publication Critical patent/JPH079193Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Television Receiver Circuits (AREA)

Description

【図面の簡単な説明】
第1図は本考案の受像管輝度可変回路の一実施
例を示す図、第2図は本考案の受像管輝度可変回
路の他の実施例を示す図、第3図は従来の映像信
号にパルスを加算して、輝度を可変する受像管輝
度可変回路の一例を示す図、第4図は第3図にお
けるCRTのカソードの信号波形を示す図である
。 1…映像信号入力端子、2…加算器、3…増幅
器、4…DC再生回路、5…CRT、6,8…ア
ナログスイツチ、7…クランプパルス入力端子、
9…周波数判別回路、10…水平同期信号入力端
子、11…F―V変換回路、12…V―V′変換
回路、R,R,R…抵抗、VR,VR
,VR…可変抵抗。

Claims (1)

  1. 【実用新案登録請求の範囲】 受像管の輝度を可変する目的で、受像管のカソ
    ードに供給する信号にパルスを加算する受像管輝
    度可変回路において、 映像信号の水平同期周波数に応じて、前記カソ
    ードに供給する信号に加算するパルスの大きさを
    可変する可変手段を備えたことを特徴とする受像
    管輝度可変回路。
JP18820087U 1987-12-10 1987-12-10 受像管輝度可変回路 Expired - Lifetime JPH079193Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18820087U JPH079193Y2 (ja) 1987-12-10 1987-12-10 受像管輝度可変回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18820087U JPH079193Y2 (ja) 1987-12-10 1987-12-10 受像管輝度可変回路

Publications (2)

Publication Number Publication Date
JPH0191385U true JPH0191385U (ja) 1989-06-15
JPH079193Y2 JPH079193Y2 (ja) 1995-03-06

Family

ID=31479311

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18820087U Expired - Lifetime JPH079193Y2 (ja) 1987-12-10 1987-12-10 受像管輝度可変回路

Country Status (1)

Country Link
JP (1) JPH079193Y2 (ja)

Also Published As

Publication number Publication date
JPH079193Y2 (ja) 1995-03-06

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