| ??? 03/01/05 09:33 Read: times |
#88751 - I'd agree Responding to: ???'s previous message |
I too found in 7segment displays that segments would fail - my conclusion was that the pcb (it looks like printed conductive ink rather than copper pcb) fails rather than the led itself. My led man also said something similar - for the dot matrix, he had a product that was normal 5mm leds on a pcb (normal copper type) to get around this problem. To solve my 7 segment display problem I've changed my pcb to accomodate 5mm leds - 3 per segment. Hopefully, since I'm using brighter leds along with less current, my reliability problems will disappear. Andy - as for the contradictory requirement - you've hit it right on the head! Although in the U.K this would be less of a problem. |
| Topic | Author | Date |
| Further thoughts on large LED displays | 01/01/70 00:00 | |
| Practical findings | 01/01/70 00:00 | |
| I'd agree | 01/01/70 00:00 | |
| cost... | 01/01/70 00:00 | |
| Except | 01/01/70 00:00 | |
| Heatsinking | 01/01/70 00:00 | |
| Luxeon heatsinking | 01/01/70 00:00 | |
| Much brighter discrete LEDs | 01/01/70 00:00 | |
| 5 x 8 matrices | 01/01/70 00:00 | |
| size | 01/01/70 00:00 | |
| Contradictory requirement! | 01/01/70 00:00 | |
| This works | 01/01/70 00:00 | |
| "spider" LEDs are cool | 01/01/70 00:00 | |
| but that requires | 01/01/70 00:00 | |
| ...and also... | 01/01/70 00:00 | |
| track width | 01/01/70 00:00 | |
| 1 mm track | 01/01/70 00:00 | |
| Display of LED problems | 01/01/70 00:00 | |
| color code | 01/01/70 00:00 | |
Big sign | 01/01/70 00:00 |