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ArcticMyst Security by Avery

LM317 Driver but using a 200Ohm pot...

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Jan 12, 2014
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heres the schematic i built 5 minz ago
11711-diy-homemade-laser-diode-driver-lm317_components01_001.jpg

and i got all components at home but i didnt find a 100ohm pot so i used a 200 ohm pot instead... Is that ok? Will it work or can i "make" the potentiometer to 100 ohm by putting like a resistor somewhere i we heard.
The diode is a Red 16x DVD combo drive burner. and the voltage i will be using is 9v (not that it matters but anyway)
Thanks Anyway!!! :D
(cant test it yet cause i havent got my aixiz module yet :3)
 
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Joined
Jan 12, 2014
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Okay after a few hours of searching other sites i found this on this forum... i got 50ohm potentiometers too so thats no problem... Will it work better with a 50ohm than a 200 ohm pot?
2439-lm317driver02.jpg
 
Last edited:
Joined
Dec 11, 2011
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A potentiometer covers the resistance range from zero (dead short) up to the listed value, so a 200 ohm pot will work just fine. If you only use half of the adjustment range it is identical to a 100Ohm pot.
 




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