JPH01135495U - - Google Patents
Info
- Publication number
- JPH01135495U JPH01135495U JP3062588U JP3062588U JPH01135495U JP H01135495 U JPH01135495 U JP H01135495U JP 3062588 U JP3062588 U JP 3062588U JP 3062588 U JP3062588 U JP 3062588U JP H01135495 U JPH01135495 U JP H01135495U
- Authority
- JP
- Japan
- Prior art keywords
- display tube
- fluorescent display
- circuit
- point
- terminal
- 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
Links
- 238000010586 diagram Methods 0.000 description 6
- 230000003595 spectral effect Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
Landscapes
- Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Description
第1図は、この考案の好適な実施例を示す電気
回路図である。第2図は、第1図に示す蛍光表示
管のデイジタル数字パターンを示す説明図である
。第3図は、第1図に示す回路の各点の特性図で
あり、第3図Aは○a点の電圧波形を示し、第3
図Bは○b点及び○c点の電圧波形を示し、第3
図Cは○d点の電圧波形を示し、第3図Dは蛍光
表示管の発光状態をそれぞれ示したものである。
第4図は、第1図に示す蛍光表示管から発生され
る電磁ノイズの測定装置を示す説明図である。第
5図は、第1図に示す蛍光表示管から発生される
電磁ノイズのスペクトル分布を示す特性図である
。第6図は、従来の技術による電磁ノイズのスペ
クトル分布特性図である。
1…蛍光表示管、2…デユーテイパルス発生回
路、3…表示信号発生回路、4…ライト回路、2
1…調光レベル設定回路、22…積分回路、23
…比較回路、211…イルミネーシヨンコントロ
ーラ。
FIG. 1 is an electrical circuit diagram showing a preferred embodiment of this invention. FIG. 2 is an explanatory diagram showing the digital number pattern of the fluorescent display tube shown in FIG. 1. Fig. 3 is a characteristic diagram of each point of the circuit shown in Fig. 1, and Fig. 3A shows the voltage waveform at point ○a;
Figure B shows the voltage waveforms at point ○b and point ○c.
Figure C shows the voltage waveform at point ○d, and Figure 3D shows the light emitting state of the fluorescent display tube.
FIG. 4 is an explanatory diagram showing an apparatus for measuring electromagnetic noise generated from the fluorescent display tube shown in FIG. 1. FIG. 5 is a characteristic diagram showing the spectral distribution of electromagnetic noise generated from the fluorescent display tube shown in FIG. FIG. 6 is a spectral distribution characteristic diagram of electromagnetic noise according to a conventional technique. 1... Fluorescent display tube, 2... Duty pulse generation circuit, 3... Display signal generation circuit, 4... Light circuit, 2
1... Dimming level setting circuit, 22... Integrating circuit, 23
...Comparison circuit, 211...Illumination controller.
Claims (1)
表示管と、該蛍光表示管のグリツド端子に接続さ
れたデユーテイパルス発生回路とによつて構成さ
れたことを特徴とする蛍光表示管の調光装置。 1. A light control device for a fluorescent display tube, comprising a fluorescent display tube equipped with a segment terminal and a grid terminal, and a duty pulse generation circuit connected to the grid terminal of the fluorescent display tube.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3062588U JPH01135495U (en) | 1988-03-08 | 1988-03-08 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3062588U JPH01135495U (en) | 1988-03-08 | 1988-03-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH01135495U true JPH01135495U (en) | 1989-09-18 |
Family
ID=31255848
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3062588U Pending JPH01135495U (en) | 1988-03-08 | 1988-03-08 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH01135495U (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5933091B2 (en) * | 1978-06-23 | 1984-08-13 | 積水化学工業株式会社 | Method for manufacturing bent pipes |
-
1988
- 1988-03-08 JP JP3062588U patent/JPH01135495U/ja active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5933091B2 (en) * | 1978-06-23 | 1984-08-13 | 積水化学工業株式会社 | Method for manufacturing bent pipes |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPH01135495U (en) | ||
JPH01135494U (en) | ||
JP2578460Y2 (en) | Dimming system | |
JPS6434694U (en) | ||
JPS6237197U (en) | ||
JPH0212943U (en) | ||
JPS6237198U (en) | ||
JPS5813499Y2 (en) | Record player Yanioker Stroboscope display | |
JPH03112793U (en) | ||
JPH02131784U (en) | ||
JPH0235027U (en) | ||
JPS60189997U (en) | Fishing light lighting device | |
JPH0411473U (en) | ||
JPH0320391U (en) | ||
JPS5862592U (en) | Fluorescent lamp dimmer circuit | |
JPS62143540U (en) | ||
JPH0423094U (en) | ||
JPH03125390U (en) | ||
JPS58147194U (en) | discharge lamp lighting device | |
JPS5914299U (en) | Incandescent lamp dimmer | |
JPH0217435U (en) | ||
JPS6175099U (en) | ||
JPS6171992U (en) | ||
JPH0316365U (en) | ||
JPS5896698U (en) | discharge lamp lighting device |