JP4993598B2 - ゆらぎ発光駆動回路 - Google Patents
ゆらぎ発光駆動回路 Download PDFInfo
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- JP4993598B2 JP4993598B2 JP2007295019A JP2007295019A JP4993598B2 JP 4993598 B2 JP4993598 B2 JP 4993598B2 JP 2007295019 A JP2007295019 A JP 2007295019A JP 2007295019 A JP2007295019 A JP 2007295019A JP 4993598 B2 JP4993598 B2 JP 4993598B2
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- circuit
- light emitting
- fluctuation
- light emission
- fluctuation light
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Description
12 第2のゆらぎ発光回路 13、14 抵抗
15 パルス発生回路 17 電源
20 LED(発光素子) 21 MOSFET
Claims (3)
- 発光素子からなり、電源の正極と負極との間に直列に接続された連続発光回路と、
発光素子とFETとを直列に接続してなり、連続発光回路に並列に接続されたゆらぎ発光回路と、
該ゆらぎ発光回路のFETのゲートに接続され、矩形波パルス電圧が印加され、その抵抗値とFETのゲートの静電容量値とによって決定される三角波又は三角波に近似した波形の電圧をFETのゲートに印加する抵抗と、
矩形波パルス電圧を発生するパルス発生回路と、
を備えたことを特徴とするゆらぎ発光駆動回路。 - 上記連続発光回路は複数の発光素子を直列に接続して構成され、上記ゆらぎ発光回路は上記連続発光回路の発光素子と同数の発光素子とFETとを直列に接続して構成されている請求項1記載のゆらぎ発光駆動回路。
- 第1、第2の上記ゆらぎ発光回路が上記連続発光回路に並列に接続され、上記第1、第2のゆらぎ発光回路のFETのゲートには各々上記抵抗が接続され、上記第1、第2のゆらぎ発光回路の抵抗の間はインバータを介して相互に接続されている請求項1記載のゆらぎ発光駆動回路。
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JP2007295019A JP4993598B2 (ja) | 2007-11-14 | 2007-11-14 | ゆらぎ発光駆動回路 |
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JP2007295019A JP4993598B2 (ja) | 2007-11-14 | 2007-11-14 | ゆらぎ発光駆動回路 |
Publications (2)
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JP2009123452A JP2009123452A (ja) | 2009-06-04 |
JP4993598B2 true JP4993598B2 (ja) | 2012-08-08 |
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JP2007295019A Expired - Fee Related JP4993598B2 (ja) | 2007-11-14 | 2007-11-14 | ゆらぎ発光駆動回路 |
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JP (1) | JP4993598B2 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4864122B2 (ja) * | 2009-07-21 | 2012-02-01 | シャープ株式会社 | 照明装置及び照明システム |
US20120182939A1 (en) | 2011-01-14 | 2012-07-19 | Qualcomm Incorporated | Telehealth wireless communication hub and service platform system |
IN2014CN04333A (ja) * | 2011-12-05 | 2015-09-04 | Qualcomm Inc | |
CN103985359A (zh) * | 2014-04-16 | 2014-08-13 | 京东方科技集团股份有限公司 | 一种背光源驱动电路和显示装置 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1186602A (ja) * | 1997-09-01 | 1999-03-30 | Yamato Kogyo Kk | 提灯用ろうそく形光源 |
JP2000243580A (ja) * | 1999-02-19 | 2000-09-08 | Yazaki Corp | 減光制御装置 |
JP2006107975A (ja) * | 2004-10-07 | 2006-04-20 | Parking Nakakita:Kk | 照明装置および発光方法 |
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2007
- 2007-11-14 JP JP2007295019A patent/JP4993598B2/ja not_active Expired - Fee Related
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JP2009123452A (ja) | 2009-06-04 |
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