jtfoo 0 Report post Posted April 16, 2004 After searching for a while, Im thinking about the Jan Meier PSU design. But it is fixed at 30Vpp. Any idea how to change it to be variable between 12Vpp and 30Vpp? Link over here. http://headwize2.powerpill.org/projects/sh...=meier3_prj.htm Read the datasheet of LM317 and LM337. Read the application hint, you'll learn something from there.. Share this post Link to post Share on other sites
hacknet 0 Report post Posted April 17, 2004 if you insist on using the LM7X regulators. pin replace the L7815 with a L7812 and the L7915 with the L7912 Share this post Link to post Share on other sites
TerTop 0 Report post Posted April 17, 2004 if you insist on using the LM7X regulators. pin replace the L7815 with a L7812 and the L7915 with the L7912 Thanks for the tips. Is the L7915 & L7912 more superior? Share this post Link to post Share on other sites
hacknet 0 Report post Posted April 17, 2004 nope. it only requires less components. there are many exotic 12v fixed regultors around. i guess you just have to do a search. i`m quite accustom to using a 317 & 337 Share this post Link to post Share on other sites
