Jan 21, 2013 #1 S suryattheja Newbie level 3 Joined Jan 19, 2013 Messages 3 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,295 how do i obtain 3v fr0m 9v using lm317. thank u
Jan 21, 2013 #2 Tahmid Advanced Member level 6 Joined Jun 17, 2008 Messages 4,764 Helped 1,799 Reputation 3,590 Reaction score 1,662 Trophy points 1,413 Location Berkeley, California Activity points 30,693 Go through the LM317 datasheet. All you need is there. Here's the download link: https://www.ti.com/lit/ds/symlink/lm117.pdf Choose the 2 resistors such that they give 3V. You may find it better to use a potentiometer for one of the 2 resistors so that you can 'fine tune' the voltage to obtain an accurate output. Hope this helps. Tahmid.
Go through the LM317 datasheet. All you need is there. Here's the download link: https://www.ti.com/lit/ds/symlink/lm117.pdf Choose the 2 resistors such that they give 3V. You may find it better to use a potentiometer for one of the 2 resistors so that you can 'fine tune' the voltage to obtain an accurate output. Hope this helps. Tahmid.