| ??? 07/31/08 19:46 Read: times |
#157195 - in series!! Responding to: ???'s previous message |
Erik Malund said:
you can't, LEDs have quite a tolerance on Vf
BUT, you can connect them in series. Erik I think if I connect them in series I need to increase the driving voltage otherwise I would get lower brightness. Each VF around 2VDC then I need 10VDC power supply which will complicate my design. So the reason behinde putting LEDs in parallel is that if 1 led breaks the other 4 break as well, I don't think so because I'm driving each LED with 30mA and they can tolerate 70mA each. If 1 LED breaks I don't mind the other 4 to break as long as there is no risk of fire! Why would LEDs break when they are rated for 100,000 working hours? Mahmood |
| Topic | Author | Date |
| Outdoor Display 2 | 01/01/70 00:00 | |
| you can't | 01/01/70 00:00 | |
| seconded | 01/01/70 00:00 | |
| Have seen parallel-connected LEDs | 01/01/70 00:00 | |
| Who broke the breaks? | 01/01/70 00:00 | |
| Lousy, cross-wired fingers | 01/01/70 00:00 | |
| in series!! | 01/01/70 00:00 | |
| Uneven load | 01/01/70 00:00 | |
| most often for pure mechanical reasons | 01/01/70 00:00 | |
| Temperature Problems | 01/01/70 00:00 | |
| Don't connect | 01/01/70 00:00 | |
Serial connection it is | 01/01/70 00:00 | |
| the problem with the 16 bitters | 01/01/70 00:00 |