VoyForums
[ Show ]
Support VoyForums
[ Shrink ]
VoyForums Announcement: Programming and providing support for this service has been a labor of love since 1997. We are one of the few services online who values our users' privacy, and have never sold your information. We have even fought hard to defend your privacy in legal cases; however, we've done it with almost no financial support -- paying out of pocket to continue providing the service. Due to the issues imposed on us by advertisers, we also stopped hosting most ads on the forums many years ago. We hope you appreciate our efforts.

Show your support by donating any amount. (Note: We are still technically a for-profit company, so your contribution is not tax-deductible.) PayPal Acct: Feedback:

Donate to VoyForums (PayPal):

Login ] [ Main index ] [ Post a new message ] [ Search | Check update time | Archives: 12345678 ]


[ Next Thread | Previous Thread | Next Message | Previous Message ]

Date Posted: 05:53:46 04/16/02 Tue
Author: Andy Nicholl
Subject: Re: Minor Mod Question (Blue LED)
In reply to: Andy Nicholl 's message, "Re: Minor Mod Question (Blue LED)" on 01:33:40 04/16/02 Tue

Further research: www.nichia.com is worth a visit.
They list three suitable SMT LEDs, all of which cost $4.75 each:
NECB426B - 3x3x1.8mm, 0.058 cd output brightness, 10-15mA
NSCB100 - 3x2x1.5mm, 0.104 cd output, 20-25mA
NSSB440 - 3.8x2x3.2mm, 0.52 cd output, 20-30mA

All of these operate at 3.6V (max 5V) and emit light at 465 nanometers, but the higher output ones are more directional than the lower output ones. I wouldn't imagine this is a problem, as the LED is a bit behind the casing anyway.

The choice will depend on the space available (I haven't checked this yet) and the brightness required. If the voltage supply to the existing LED is 5V or more, an additional resistor (say 10-100R) will be needed to limit the current through the blue LED. I hope to check existing voltages and currents shortly.

Andy

[ Next Thread | Previous Thread | Next Message | Previous Message ]


Replies:



Post a message:
This forum requires an account to post.
[ Create Account ]
[ Login ]

Forum timezone: GMT-8
VF Version: 3.00b, ConfDB:
Before posting please read our privacy policy.
VoyForums(tm) is a Free Service from Voyager Info-Systems.
Copyright © 1998-2019 Voyager Info-Systems. All Rights Reserved.