Hello, I'm currently trying to build my own laser driver. More specifically the one called LM317. I've read through the instructions (here Laser driver - It can be done) a few times but I cannot seem to find more detailed information on the specific use of the Variable Resistor/Multiturn Pot. I am trying accomplish a ~100mA output throught the driver, so I will be using a 15 and 68 ohm resistors in parallel. That should be enough to allow no more than about 102mA through correct? If so, what purpose does the variable resistor serve? Could I just replace it with a 100ohm resistor instead? I'm asking this partly because Radioshack doesn't seem to carry multivariable resistors with such small resistances, the smallest I could find was 5k Ohm =O
Thanks in advance for any help =D
Sorry I forgot to add that I found my calculations through the instructions found in that website, using the voltage as 1.5v.
Thanks in advance for any help =D
Sorry I forgot to add that I found my calculations through the instructions found in that website, using the voltage as 1.5v.
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