| ??? 04/02/10 08:21 Read: times |
#174765 - No Responding to: ???'s previous message |
You would need at least a battery in addition!
But, seriously, haven't you asked this before? With a resistor, you can calculate the current using Ohm's law: it will be directly related to the supply voltage and the diode voltage drop - won't it? Therefore, for the current to be accurately controlled, the supply voltage must be accurately controlled, and the diode voltage drop must be accurately known. Chico Magalhães said:
I think the driver is very simple What driver? Why do you think that? and cant accept the modulation I need. Again, why do you think that? What does its Datasheet tell you? |
| Topic | Author | Date |
| Can I drive a Laser diode with only a resistor? | 01/01/70 00:00 | |
| No | 01/01/70 00:00 | |
| no datasheet =( | 01/01/70 00:00 | |
| CURRENT | 01/01/70 00:00 | |
| Guessing time, again... | 01/01/70 00:00 | |
| not really | 01/01/70 00:00 | |
| leds are contant current device | 01/01/70 00:00 | |
| Ehh??? | 01/01/70 00:00 | |
| Some lasers requires pulsing | 01/01/70 00:00 | |
| ia a laser pointer actually a laser? | 01/01/70 00:00 | |
It is, usually... | 01/01/70 00:00 | |
| is it JUST the diode? ... | 01/01/70 00:00 | |
| Same module, another use | 01/01/70 00:00 | |
| unless ... | 01/01/70 00:00 | |
| Yes, but... | 01/01/70 00:00 | |
| never say never | 01/01/70 00:00 | |
| 100R times 100nF gives 10µsec... | 01/01/70 00:00 |