JPH0289799U - - Google Patents
Info
- Publication number
- JPH0289799U JPH0289799U JP16842988U JP16842988U JPH0289799U JP H0289799 U JPH0289799 U JP H0289799U JP 16842988 U JP16842988 U JP 16842988U JP 16842988 U JP16842988 U JP 16842988U JP H0289799 U JPH0289799 U JP H0289799U
- Authority
- JP
- Japan
- Prior art keywords
- variable resistor
- circuit
- dimming
- level
- level setting
- 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
Links
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Details Of Measuring Devices (AREA)
- Arrangements Of Lighting Devices For Vehicle Interiors, Mounting And Supporting Thereof, Circuits Therefore (AREA)
Description
第１図は本考案の一実施例を示すブロツク図、
第２図は同上の第１の調光装置の具体例を示す図
、第３図は同上の動作を説明するための特性であ
る。
１……三角波発生回路、２……第１のレベル設
定回路、３……矩形波発生回路、４……第１の駆
動回路、５……ランプ負荷、６……第２のレベル
設定回路、７……第２の駆動回路、８……電子デ
バイス負荷、Ａ……第１の調光装置、Ｂ……第２
の調光装置、Ｃ……２連可変抵抗器、ＶＲ１……
第１の可変抵抗器、ＶＲ２……第２の可変抵抗器
。
FIG. 1 is a block diagram showing an embodiment of the present invention.
FIG. 2 is a diagram showing a specific example of the first light control device same as above, and FIG. 3 shows characteristics for explaining the operation same as above. DESCRIPTION OF SYMBOLS 1... Triangular wave generation circuit, 2... First level setting circuit, 3... Rectangular wave generation circuit, 4... First drive circuit, 5... Lamp load, 6... Second level setting circuit, 7... Second drive circuit, 8... Electronic device load, A... First light control device, B... Second
dimmer, C...double variable resistor, VR 1 ...
First variable resistor, VR 2 . . . second variable resistor.
Claims (1)
調光レベルの設定を行う第１のレベル設定回路と
、前記三角波発生回路の三角波と前記第１のレベ
ル設定回路の調光レベルに応じた電圧とを比較し
矩形波を出力する矩形波発生回路と、前記矩形波
によつて光源負荷たるランプを駆動する第１の駆
動回路よりなる第１の調光装置と、 第２の可変抵抗器によつて調光レベルの設定を
行う第２のレベル設定回路と、該第２のレベル設
定回路の出力により光源負荷たる電子デバイスを
駆動する第２の駆動回路よりなる第２の調光装置
とを備え、 前記第１の可変抵抗器と前記第２の可変抵抗器
にて２連可変抵抗器を構成し、かつ該２連可変抵
抗器の回転角に対し前記光源負荷たるランプ及び
電子デバイスが直線的な調光特性を得るように前
記第１の可変抵抗器及び前記第２の可変抵抗器の
抵抗変化特性を設定したことを特徴とする調光装
置。[Claims for Utility Model Registration] A triangular wave generating circuit, a first level setting circuit that sets a dimming level using a first variable resistor, a triangular wave of the triangular wave generating circuit, and the first level setting. A first dimming device comprising a rectangular wave generating circuit that compares a voltage according to a dimming level of the circuit and outputs a rectangular wave, and a first driving circuit that drives a lamp serving as a light source load using the rectangular wave. and a second level setting circuit that sets a dimming level using a second variable resistor, and a second drive circuit that drives an electronic device as a light source load using the output of the second level setting circuit. a second variable resistor configured by the first variable resistor and the second variable resistor, and wherein the first variable resistor and the second variable resistor constitute a double variable resistor; A dimming device characterized in that the resistance change characteristics of the first variable resistor and the second variable resistor are set so that a lamp and an electronic device serving as a light source load have linear dimming characteristics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16842988U JPH0547721Y2 (en) | 1988-12-28 | 1988-12-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16842988U JPH0547721Y2 (en) | 1988-12-28 | 1988-12-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0289799U true JPH0289799U (en) | 1990-07-17 |
| JPH0547721Y2 JPH0547721Y2 (en) | 1993-12-16 |
Family
ID=31457596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16842988U Expired - Lifetime JPH0547721Y2 (en) | 1988-12-28 | 1988-12-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0547721Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007095392A (en) * | 2005-09-27 | 2007-04-12 | Matsushita Electric Works Ltd | Discharge lamp lighting device, luminaire and illumination system |
| JP2009025394A (en) * | 2007-07-17 | 2009-02-05 | Olympus Corp | Microscope system |
-
1988
- 1988-12-28 JP JP16842988U patent/JPH0547721Y2/ja not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007095392A (en) * | 2005-09-27 | 2007-04-12 | Matsushita Electric Works Ltd | Discharge lamp lighting device, luminaire and illumination system |
| JP4501829B2 (en) * | 2005-09-27 | 2010-07-14 | パナソニック電工株式会社 | Discharge lamp lighting device, lighting fixture, and lighting system |
| JP2009025394A (en) * | 2007-07-17 | 2009-02-05 | Olympus Corp | Microscope system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0547721Y2 (en) | 1993-12-16 |
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