Some years back i did some work with ultrabright ledsi milled the casing down and placed a large heatsink on one of the leads, cant remember but it was the one that generated all the heat :), i buult a circut that pulsed the led and the draw was around 10amps, the LED puty out a bright light that could be focused via a lens and was my first ever solid state simulated lazer. cant remember what the duty cycle was but i think it was somewhere around 15 to 20% Pulsing LED's works prety well in my book Andrew Hooper ----- Original Message ----- From: Hash To: Sent: Friday, January 22, 1999 4:22 PM Subject: [OT]: Overpowering LED's > I have a 1970 camaro and I am trying to use LED's for as many things as I > can and keep the car looking stock. I have some super bright white LED's > that run off about 30 mA each and work pretty good here in my room but I > know in daylight it will not be so great. I built a circuit and I have been > pulsing the LED with approx 80-100mA (according the the inline current > sensor) and it is VERY bright and seems to be able to take it for quite a > while(tested for 3 hours). Once I have 4 LED's on there though, I am > actually drawing more power than the light bulb took. My main goal is to > reduce power consumption in my car from as many spots as possible. Has > anyone pulsed LED's like this and have any advice for me? Any information > is greatly appreciated. I have been varying the on/off times of the pulse > to achieve what I feel is a happy medium so the LED is bright but won't harm > it. > > Afshin Salehi > > -- > http://www.piclist.com#nomail Going offline? Don't AutoReply us! > email listserv@mitvma.mit.edu with SET PICList DIGEST in the body > -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body