Re: ... LED hyperflash - Saabnet.com Bulletin Board
Interesting solution. hyperflash results from the absence of current flowing, and an LED uses what, an eighth of the current as an incandescent (halogen or nitrogen) of equivalent light output? So run the missing current to a second load, a resistor. Moving the heat from the bulb (which does a number on the light socket) to a resistor doesn't mean less heat, just heat in a hopefully less damaging place. But considering, the H21 halogen bulb dissipates, er, 21 watts. Taking some liberty by considering the duty cycle (call it 50%, or 10 watts), and guessing that the current threshold is something like half way between a fully functioning bulb (2 amps) and a burned out one (0), you'd need at least a 5 watt resistor. And be certain there's nothing combustible in the immediate vicinity of the resistor.
posted by 69.133.17...
Posts in this Thread:
- Windshield replacement, LED hyperflash, saabsailor, Fri, 2 Jun 2017 12:11:03
- Re: Windshield replacement, LED hyperflash, saabsailor, Sat, 12 Aug 2017 17:06:10
- LED hyperflash, Name Left Blank, Thu, 22 Jun 2017 16:15:05
- Re: ... LED hyperflash, Stephen Goldberger, Sat, 10 Jun 2017 04:56:39 <-- Viewing This Message
- Re: Windshield replacement, LED hyperflash, seth1065 , Wed, 7 Jun 2017 07:43:54
Post a Followup
No Site Registration is Required to Post - Site Membership is optional (Member Features List), but helps to keep the site online
for all Saabers. If the site helps you, please consider helping the site by becoming a member.
This is a moderated bulletin board - Posting is a privilege, not a right.
Unsolicited commercial postings are not allowed (no Spam). Please, no For Sale or Wanted postings, SERIOUSLY.
Classifieds are to be listed in The Saab Network Classifieds pages.
This is a problem solving forum for over 250,000 Saab owners, so expect to see
problems discussed here even though our cars are generally very reliable. This is not an anything goes
type of forum. Saabnet.com has been a moderated forum since 1988. For usage guidelines, see the
Saabnet.com Mission and Purpose Page. Please remember that you are
not anonymous. Site Contact | Site Donations | Other Sites by SP -
Poverty2Prosperity.org | RandomScreening.com
Your address is: 184.108.40.206 - Using CCBot/2.0 (http://commoncrawl.org/faq/) - Logged.
Site Members do not see red text instructions, skyscraper, nor box ads.
Click here to see all
the Site Membership Benefits!