Da_vinci_cod
New Member
hello all,
I'm planning to make an LED torch. however, wanting to make it efficient, I did some "research" and unearthed these two articles: http://electronicdesign.com/Articles/ArticleID/12083/12083.html?feed=rss
and http://superpositioned.com/articles/2006/03/02/a-low-power-led-flashlight-with-pvc
In these articles (which are on the same circuit design by the way) they say that they use Pulse Width Modulation in the circuits. They also use 7 LEDs in series. they both say that the design is effiecient.
I was wondering if it would be better if i connected the LEDs in parallel rather than in series, how to change this circuit so that the LEDS are in parallel, and if PWM is good to use in this case or not. can someone help me here?
I'm planning to make an LED torch. however, wanting to make it efficient, I did some "research" and unearthed these two articles: http://electronicdesign.com/Articles/ArticleID/12083/12083.html?feed=rss
and http://superpositioned.com/articles/2006/03/02/a-low-power-led-flashlight-with-pvc
In these articles (which are on the same circuit design by the way) they say that they use Pulse Width Modulation in the circuits. They also use 7 LEDs in series. they both say that the design is effiecient.
I was wondering if it would be better if i connected the LEDs in parallel rather than in series, how to change this circuit so that the LEDS are in parallel, and if PWM is good to use in this case or not. can someone help me here?