JPS5984477U - brightness control circuit - Google Patents

brightness control circuit

Info

Publication number
JPS5984477U
JPS5984477U JP9572183U JP9572183U JPS5984477U JP S5984477 U JPS5984477 U JP S5984477U JP 9572183 U JP9572183 U JP 9572183U JP 9572183 U JP9572183 U JP 9572183U JP S5984477 U JPS5984477 U JP S5984477U
Authority
JP
Japan
Prior art keywords
transistors
transistor
control circuit
brightness
emitters
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
JP9572183U
Other languages
Japanese (ja)
Other versions
JPS609723Y2 (en
Inventor
ジヨン・ジエイコブ・ホ−ン
Original Assignee
テクトロニツクス・インコ−ポレイテツド
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 テクトロニツクス・インコ−ポレイテツド filed Critical テクトロニツクス・インコ−ポレイテツド
Priority to JP9572183U priority Critical patent/JPS609723Y2/en
Publication of JPS5984477U publication Critical patent/JPS5984477U/en
Application granted granted Critical
Publication of JPS609723Y2 publication Critical patent/JPS609723Y2/en
Expired legal-status Critical Current

Links

Landscapes

  • Television Receiver Circuits (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of drawings]

図は、本考案の好適な実施例を示す回路図である。 １２・・・・・・第１トランジスタ、１４・・・・・・
第２トランジスタ、１０・・・・・・第３トランジスタ
、１６・・・・・・第４トランジスタ、１８・・・・・
・第１抵抗器、２０・・・・・・第２抵抗器、２２・・
・・・・可変電流源。The figure is a circuit diagram showing a preferred embodiment of the present invention. 12...First transistor, 14...
Second transistor, 10...Third transistor, 16...Fourth transistor, 18...
・First resistor, 20...Second resistor, 22...
...Variable current source.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 入力信号を掃引信号に応じて表示する陰極線管表示装置
の輝度制御回路において、ベースにそれぞれ基準電圧を
印加しコレクタを出力端に共通接続した第１及び第２ト
ランジスタと、これら第１及び第２トランジスタのエミ
ッタにそ゛れぞれエミッタを接続しコレクタをそれぞれ
電圧源に接続した第３及び第４トランジスタと、これら
第３及び第４トランジスタのエミッタにそれぞれ一端を
接続した抵抗値が所定比関係にある第１及び第２抵抗器
と、これら第１及び第２抵抗器の他端に共通に接続した
輝度調整用の可変電流源とを具え、上記第３トランジス
タのベースに第１制御信号を加えて上記第１トランジス
タを導通させ、上記第４トランジスタのベースに上記入
力信号の所定部分に相当すや期間第２制御信号を加えて
上記第２トランジスタを導通させ、上記出力端からの出
力信号に韮り上記陰極線管表示装置の輝度を制御するこ
とを特徴とする輝度制御回路。In a brightness control circuit of a cathode ray tube display device that displays an input signal according to a sweep signal, first and second transistors each have a reference voltage applied to their bases and whose collectors are commonly connected to an output terminal; The third and fourth transistors each have their emitters connected to the emitters of the transistors and the collectors connected to a voltage source, respectively, and the resistance values of the third and fourth transistors each having one end connected to the emitters have a predetermined ratio relationship. a variable current source for adjusting brightness connected in common to the other ends of the first and second resistors, and applying a first control signal to the base of the third transistor; to make the first transistor conductive; apply a second control signal to the base of the fourth transistor for a period corresponding to a predetermined portion of the input signal to make the second transistor conductive; 1. A brightness control circuit for controlling the brightness of the cathode ray tube display device.
JP9572183U 1983-06-21 1983-06-21 brightness control circuit Expired JPS609723Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9572183U JPS609723Y2 (en) 1983-06-21 1983-06-21 brightness control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9572183U JPS609723Y2 (en) 1983-06-21 1983-06-21 brightness control circuit

Publications (2)

Publication Number Publication Date
JPS5984477U true JPS5984477U (en) 1984-06-07
JPS609723Y2 JPS609723Y2 (en) 1985-04-05

Family

ID=30228457

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9572183U Expired JPS609723Y2 (en) 1983-06-21 1983-06-21 brightness control circuit

Country Status (1)

Country Link
JP (1) JPS609723Y2 (en)

Also Published As

Publication number Publication date
JPS609723Y2 (en) 1985-04-05

Similar Documents

Publication Publication Date Title
JPS59189207U (en) voltage divider resistor
JPS5984477U (en) brightness control circuit
JPS616775U (en) Current-voltage conversion circuit
JPS59152863U (en) Cathode ray tube fluorescent film burnout prevention circuit
JPS6061842U (en) current switcher
JPS6147565U (en) Brightness adjustment circuit for character display
JPS588208U (en) constant current circuit
JPS58127756U (en) Video signal gradation correction circuit
JPS5857289U (en) switching regulator
JPS60153314U (en) current switching circuit
JPS60104989U (en) standby display device
JPS60189131U (en) variable resistance circuit
JPS59177234U (en) variable delay circuit
JPS6140029U (en) signal attenuation device
JPS59142815U (en) Control voltage generation circuit
JPS59144917U (en) Tone control circuit
JPS5885212U (en) constant voltage device
JPS60150860U (en) brightness control circuit
JPS5854714U (en) constant voltage circuit
JPS6050541U (en) Signal switching circuit
JPH02113436U (en)
JPS6047314U (en) signal mixing circuit
JPS5915972U (en) High-speed microcurrent measuring device
JPS6124666U (en) oscilloscope
JPS61104628U (en)