JPH01135513U - - Google Patents
Info
- Publication number
- JPH01135513U JPH01135513U JP3171188U JP3171188U JPH01135513U JP H01135513 U JPH01135513 U JP H01135513U JP 3171188 U JP3171188 U JP 3171188U JP 3171188 U JP3171188 U JP 3171188U JP H01135513 U JPH01135513 U JP H01135513U
- Authority
- JP
- Japan
- Prior art keywords
- conversion circuit
- light emitting
- output conversion
- control device
- output
- 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
- 238000006243 chemical reaction Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
- 238000005286 illumination Methods 0.000 description 1
Landscapes
- Control Of Non-Electrical Variables (AREA)
Description
第１図は本考案の調光装置の一実施例を示す回
路図、第２図は本考案の調光装置に使用される発
光ダイオードに印加される電圧と発光ダイオード
の輝度を示すグラフ、第３図は本考案の一実施例
である発光ダイオード調光回路を使用し、照明し
た場合の作用を示す図、第４図は従来の発光ダイ
オード調光回路の構成を示す回路図、第５図は従
来の発光ダイオード調光回路に使用される発光ダ
イオードに印加される電圧と発光ダイオードの輝
度を示すグラフである。
２……ＤＡコンバータ、３……オペレーシヨン
アンプ、４，５……抵抗、７，８……逆電圧保護
用ダイオード、９，１０……発光ダイオード。
FIG. 1 is a circuit diagram showing an embodiment of the light control device of the present invention, and FIG. 2 is a graph showing the voltage applied to the light emitting diode and the brightness of the light emitting diode used in the light control device of the present invention. Figure 3 is a diagram showing the effect of illumination using a light emitting diode dimming circuit which is an embodiment of the present invention, Figure 4 is a circuit diagram showing the configuration of a conventional light emitting diode dimming circuit, and Figure 5. is a graph showing the voltage applied to a light emitting diode used in a conventional light emitting diode dimming circuit and the brightness of the light emitting diode. 2...DA converter, 3...Operation amplifier, 4, 5...Resistor, 7,8...Reverse voltage protection diode, 9,10...Light emitting diode.
Claims (1)
電圧を出力する出力変換回路と、前記出力変換回
路の出力側において、逆方向に接続されたダイオ
ードを介して逆並列接続された２個１組の発光素
子とを備えた調光装置。 An output conversion circuit that outputs either a positive or negative voltage depending on the magnitude of a dimming control signal, and two circuits connected in antiparallel through diodes connected in opposite directions on the output side of the output conversion circuit. A light control device comprising a set of light emitting elements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3171188U JPH01135513U (en) | 1988-03-08 | 1988-03-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3171188U JPH01135513U (en) | 1988-03-08 | 1988-03-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01135513U true JPH01135513U (en) | 1989-09-18 |
Family
ID=31257768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3171188U Pending JPH01135513U (en) | 1988-03-08 | 1988-03-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01135513U (en) |
-
1988
- 1988-03-08 JP JP3171188U patent/JPH01135513U/ja active Pending
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