JPS59104191U - Fluorescent display tube dimmer circuit - Google Patents

Fluorescent display tube dimmer circuit

Info

Publication number
JPS59104191U
JPS59104191U JP20003082U JP20003082U JPS59104191U JP S59104191 U JPS59104191 U JP S59104191U JP 20003082 U JP20003082 U JP 20003082U JP 20003082 U JP20003082 U JP 20003082U JP S59104191 U JPS59104191 U JP S59104191U
Authority
JP
Japan
Prior art keywords
display tube
fluorescent display
pulse
circuit
duty ratio
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.)
Pending
Application number
JP20003082U
Other languages
Japanese (ja)
Inventor
望月　勇郎
Original Assignee
ジエコ−株式会社
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 ジエコ−株式会社 filed Critical ジエコ−株式会社
Priority to JP20003082U priority Critical patent/JPS59104191U/en
Publication of JPS59104191U publication Critical patent/JPS59104191U/en
Pending legal-status Critical Current

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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 the drawing]

第１図は本考案の第１実施例の回路図、第２図Ａ−Ｃは
第１図示の回路各部の信号波形図、第３図は輝度変化を
説明するための図、第４図〜第６図は夫々本考案回路の
第２〜第４実施例の回路図である。１・・・パルス発生
回路、２・・・出力端子、３Ａ〜３Ｄ・・・インターフ
ェース回路、６・・・入力端子、９Ａ〜９Ｄ・・・駆動
回路、１０〜１９・・・調光端子。FIG. 1 is a circuit diagram of the first embodiment of the present invention, FIGS. 2A-C are signal waveform diagrams of various parts of the circuit shown in FIG. 1, FIG. 3 is a diagram for explaining luminance changes, and FIGS. FIG. 6 is a circuit diagram of second to fourth embodiments of the circuit of the present invention. DESCRIPTION OF SYMBOLS 1...Pulse generation circuit, 2...Output terminal, 3A-3D...Interface circuit, 6...Input terminal, 9A-9D...Drive circuit, 10-19...Dimmer terminal.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 発生する制御パルスのデユーティ比を任意に変化しうる
パルス発生回路と、供給される該制御パルスをそのパル
ス幅に応じた調光信号に変換するインターフェイス回路
と、調光端子に供給される調光信号に応じて螢光表示管
を点灯駆動する駆動パルスのデユーティ比を段階的に変
化させる駆動回路とよりなり、該制御６にルスのデユー
ティ比を連続的に変化して該螢光表示管の輝度を連続的
に変化させる螢光表示管の調光回路。A pulse generation circuit that can arbitrarily change the duty ratio of the generated control pulse, an interface circuit that converts the supplied control pulse into a dimming signal according to the pulse width, and a dimming signal that is supplied to the dimming terminal. It consists of a drive circuit that changes stepwise the duty ratio of the drive pulse for driving the fluorescent display tube to light up according to the signal, and the control 6 continuously changes the duty ratio of the pulse to drive the fluorescent display tube. A fluorescent display tube dimmer circuit that continuously changes brightness.
JP20003082U 1982-12-27 1982-12-27 Fluorescent display tube dimmer circuit Pending JPS59104191U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20003082U JPS59104191U (en) 1982-12-27 1982-12-27 Fluorescent display tube dimmer circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20003082U JPS59104191U (en) 1982-12-27 1982-12-27 Fluorescent display tube dimmer circuit

Publications (1)

Publication Number Publication Date
JPS59104191U true JPS59104191U (en) 1984-07-13

Family

ID=30425562

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20003082U Pending JPS59104191U (en) 1982-12-27 1982-12-27 Fluorescent display tube dimmer circuit

Country Status (1)

Country Link
JP (1) JPS59104191U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6250895A (en) * 1985-08-26 1987-03-05 ゼネラル　モ−タ−ズ　コ−ポレ−シヨン Brightness control circuit for vacuum fluorescent display unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6250895A (en) * 1985-08-26 1987-03-05 ゼネラル　モ−タ−ズ　コ−ポレ−シヨン Brightness control circuit for vacuum fluorescent display unit

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