|
3mm 1.5V bright LED
Is there such a toy? -- @~@ You have the right to remain silence. / v \ Simplicity is Beauty! May the Force and farces be with you! /( _ )\ (Fedora 15 i686) Linux 3.0.4 ^ ^ 13:36:02 up 11 days 17:42 0 users load average: 0.01 0.02 0.05 不借貸! 不詐騙! 不援交! 不打交! 不打劫! 不自殺! 請考慮綜援 (CSSA): http://www.swd.gov.hk/tc/index/site_...sub_addressesa |
3mm 1.5V bright LED
"Man-wai Chang" wrote in message ... Is there such a toy? Yes if you use a 1.5V blocking oscillator. |
3mm 1.5V bright LED
"Ian Field" wrote in message ... "Man-wai Chang" wrote in message ... Is there such a toy? Yes if you use a 1.5V blocking oscillator. http://cappels.org/dproj/ledpage/leddrv.htm |
3mm 1.5V bright LED
Yes if you use a 1.5V blocking oscillator.
http://cappels.org/dproj/ledpage/leddrv.htm I want one that has the (over?) driver built into the LED... :) -- @~@ You have the right to remain silence. / v \ Simplicity is Beauty! May the Force and farces be with you! /( _ )\ (Fedora 15 i686) Linux 3.0.4 ^ ^ 13:36:02 up 11 days 17:42 0 users load average: 0.01 0.02 0.05 不借貸! 不詐騙! 不援交! 不打交! 不打劫! 不自殺! 請考慮綜援 (CSSA): http://www.swd.gov.hk/tc/index/site_...sub_addressesa |
3mm 1.5V bright LED
"Man-wai Chang" wrote in message ... Yes if you use a 1.5V blocking oscillator. http://cappels.org/dproj/ledpage/leddrv.htm I want one that has the (over?) driver built into the LED... :) Some time ago Elektor did a front cover freebie; a tiny PCB with a dedicated LED drive chip and inductor for voltages down to 0.9V - that's probably as small as it gets. Can't remember details but if you google Elektor and click contact from their home page, you can ask the editor. |
3mm 1.5V bright LED
On Fri, 28 Oct 2011 18:37:15 +0800, the renowned Man-wai Chang
wrote: Is there such a toy? You could use this simple circuit to work down to 1V -- FB = OUT for Red FB = GND for Green/Blue/White | .----------. Vin 0.8V minimum | FB | 10uH | | ___ | L6920 | LED o----+---UUU----|LX OUT|----+-|---+ + | | | | | --- | | | | --- | REF | | .-. 47uF | '----------' | | | | | + | | GND 100n --- --- '-' --- 47uF --- | | | GND GND GND All the parts can be tiny SMT components. Reduce the 47uF caps to 22uF and use 0805 22uF/6.3V ceramics and an 0805 inductor to reduce size, and the 100n can be an 0402. Best regards, Spehro Pefhany -- "it's the network..." "The Journey is the reward" Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com |
3mm 1.5V bright LED
"Man-wai Chang" wrote in message ... Yes if you use a 1.5V blocking oscillator. http://cappels.org/dproj/ledpage/leddrv.htm I want one that has the (over?) driver built into the LED... :) http://www.elektor.com/magazines/200...er.58609.lynkx |
3mm 1.5V bright LED
On Sat, 29 Oct 2011 22:39:27 +0100, the renowned "Ian Field"
wrote: "Man-wai Chang" wrote in message ... Yes if you use a 1.5V blocking oscillator. http://cappels.org/dproj/ledpage/leddrv.htm I want one that has the (over?) driver built into the LED... :) http://www.elektor.com/magazines/200...er.58609.lynkx Presumably this part? http://www.prema.com/pdf/pr4401.pdf Best regards, Spehro Pefhany -- "it's the network..." "The Journey is the reward" Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com |
| All times are GMT +1. The time now is 12:51 PM. |
Powered by vBulletin® Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright 2004 - 2014 DIYbanter