Joined: October 31, 2005 Location: Australia Posts: 64
Posted: December 15, 2005 at 4:34 AM - IP Logged
ok now u can if u like share up to 3 leds to one resistor but it is recommended to have a resistor on each, they don't cost much anyway, to power 3.2v and 3.3v leds you can use a 430ohms resistor for both 3.2 and 3.3, remember to have a fuse close to you power source, good luck ___________________________________ modest yet effective... ECLIPSE 12", Venom 8"x2, Focal 5 1/2" comp.,Response amps x2 (580WRMS total @ 4Ohms), Pioneer TFT + DVD, good for 148.7dB
Joined: October 31, 2005 Location: Australia Posts: 64
Posted: December 16, 2005 at 1:47 AM - IP Logged
yeah they would work but why would u spend that much? $10 for 25??? go to ur nearest electronic store, they will be like 4 - 6c each, plus better wattage flow, i wouldn't use those ones ___________________________________ modest yet effective... ECLIPSE 12", Venom 8"x2, Focal 5 1/2" comp.,Response amps x2 (580WRMS total @ 4Ohms), Pioneer TFT + DVD, good for 148.7dB
Joined: January 19, 2003 Location: Bouvet Island Posts: 5,024
Posted: December 16, 2005 at 1:15 PM - IP Logged
Forget the resistors and all that garbage! More work than it is worth. Add one more LED for a total of 24 LEDs, and wire them in series into 6 strings of 4 in each. Works perfectly, and ALL of them will all be exactly the same brightness. Resistor values change from resostor to resistor, and will cause different current drops across each LED, affecting their brightness... ___________________________________ It all reminds me of something that Moliere once said to Guy de Maupassant at a cafe in Vienna... That's nice. You should write it down.
Joined: January 19, 2003 Location: Bouvet Island Posts: 5,024
Posted: December 16, 2005 at 3:08 PM - IP Logged
None. 3.2v X 4 = 12.8v The voltage drop across the LEDs is exactly what you need.
Even running voltage, 14.4, will still be safe:
14.4 / 4 = 3.6v drop per LED. Yes, it is a little bit high, but if you look at the specs for MOST LEDs (what color LEDs are you using anway?) 3.2-3.8 v is the usual voltage range. ___________________________________ It all reminds me of something that Moliere once said to Guy de Maupassant at a cafe in Vienna... That's nice. You should write it down.
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Topic: LEDs in a row 
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