| ??? 09/18/09 02:27 Read: times |
#168947 - Laser adjustment / power calculation / current measuring |
Hello.
I have bhought some simple 3v 50mw green laser modules, they look like just the laser that come in the pointers, but just the laser unit itself, diode, colimator and circuit. They need to be adjusted to work properly, doesnt come adjusted, but I dont know how to adjust it, they have a trimpot on its board, but how do I will know it isnt feeding too much current? Can I calculate, or have an idea on its power output by voltage and current drawn? Also, when I try to measue its current, with a multimeter, the diode doesnt light up at all, so I think it is not measuring the current well. Can someone give me some help? Thanks a lot! |
| Topic | Author | Date |
| Laser adjustment / power calculation / current measuring | 01/01/70 00:00 | |
| Is that 50 mW output power? | 01/01/70 00:00 | |
| OP power | 01/01/70 00:00 | |
| Current Limiter | 01/01/70 00:00 | |
| Try a voltage regulator first ... | 01/01/70 00:00 | |
| Bench Supply Even Easier | 01/01/70 00:00 | |
| If he's got one ... | 01/01/70 00:00 | |
| I've got several... | 01/01/70 00:00 | |
| Have you shipped anything lately? | 01/01/70 00:00 | |
| Far too serious | 01/01/70 00:00 | |
| Well, I was thinking along those lines ... | 01/01/70 00:00 | |
| No bench supply =( | 01/01/70 00:00 | |
| It's hard to work without one | 01/01/70 00:00 | |
| Cant do without a bench supply? | 01/01/70 00:00 | |
| Yes you can! | 01/01/70 00:00 | |
| Make one.. | 01/01/70 00:00 | |
| That's an important feature | 01/01/70 00:00 | |
Power supply should be the FIRST project! | 01/01/70 00:00 |