| ??? 09/12/08 00:56 Modified: 09/12/08 00:57 Read: times |
#158207 - Not so fast... Responding to: ???'s previous message |
The actual forward voltage drop of a LED depends on crystal mixture and current and can differ quite a lot from type to type and brand to brand.
Erik said:
Why do you wonder about Voltage, they are "current controlled". Of course, and just because of this, (s)he needs to know the forward voltage drop to calculate the current limiting resistor. Kai |
| Topic | Author | Date |
| voltage rating for Chip LEDs | 01/01/70 00:00 | |
| same, of course | 01/01/70 00:00 | |
| datasheets really are your friends | 01/01/70 00:00 | |
| Voltage | 01/01/70 00:00 | |
| Not so fast... | 01/01/70 00:00 | |
| forward voltage... and series resistance (sometimes)... | 01/01/70 00:00 | |
| nothing exotic | 01/01/70 00:00 | |
| Some numbers... | 01/01/70 00:00 | |
| the question, the answers | 01/01/70 00:00 | |
| Many don't know about datasheets at all | 01/01/70 00:00 | |
| Unfortunately, in real life ... | 01/01/70 00:00 | |
| thank you every one for your advice | 01/01/70 00:00 | |
| series 0805 | 01/01/70 00:00 | |
| 0805 = package size | 01/01/70 00:00 | |
| Select-On-Test | 01/01/70 00:00 | |
| yeah its better to buy a few and test them | 01/01/70 00:00 | |
| Test for what? | 01/01/70 00:00 | |
| RE: Test for what? | 01/01/70 00:00 | |
| Usually... | 01/01/70 00:00 | |
| all i can find are hobbyist suppliers. | 01/01/70 00:00 | |
| Try "real" parts sources ... | 01/01/70 00:00 | |
| No, no, digikey isn't that nice... | 01/01/70 00:00 | |
Digikey | 01/01/70 00:00 |