EvilsConscience
- Apr 2, 2016
- 4
- Joined
- Apr 2, 2016
- Messages
- 4
Hey! This is my first personal project where I'm adapting a design to my own ideas. I'm taking an infrared laser diode and making a handheld laser engraver with it. Since this is my first build, I want to double check with more experienced people that the resistance I calculated between the driver and the diode is correct.
The driver info page said it had an output of 3.0-4.5V. I'm going to provide 3V.
The page also said the constant current was 8mha, I assume a typo meaning 8mAh, so .8 amps, bring the R to 3.75Ω.
The diode needs only 2.2V and 650mA.I calculated that I need an R of 3.38mA, but I don't see how the R O the diode could be lower than the output from the driver.
I don't want to waste $50 of equipment. Could someone correct me where I went wrong?
The driver info page said it had an output of 3.0-4.5V. I'm going to provide 3V.
The page also said the constant current was 8mha, I assume a typo meaning 8mAh, so .8 amps, bring the R to 3.75Ω.
The diode needs only 2.2V and 650mA.I calculated that I need an R of 3.38mA, but I don't see how the R O the diode could be lower than the output from the driver.
I don't want to waste $50 of equipment. Could someone correct me where I went wrong?