Hi Matt, Yes! I remembered the LM317 not being the right regulator for 48V, a TL583 would be a drop in replacement or I would have to change other components in the circuit as well?
On Sat, Jul 4, 2009 at 9:25 PM, Matt Syson <[email protected]>wrote: > Hi > The JLM circuits are pretty much what you need so you could either 'copy' > the circuit and build it yourself or buy the kit. > I am not too impressed at using a LM317 for the phantom 48 rail, they are > only rated to 39 or 40 volt DIFFERENTIAL (input pin to output pin) , meaning > that if you short the output you stand a good chance of 'blowing it up'. I > presume the 47 Ohm resistor is a lame way of trying not to 'kill' it, hardly > a good engineering solution. > You should substitute it for a TL583 (sorry this number won't come to me, > but there is a similarly packaged regulator that handles 125 Volts). > Matt S > > > Donald Put wrote: > >> If you're up to making your own, there are numerous PCBs/kits available >> for this type of project. They're set up for dual voltages and 48VDC for >> the phantom power. Check out JLM's offerings on his website: >> >> http://www.jlmaudio.com/JLM%20Power%20Supply.htm >> >> Cheers, >> -- >> Don >> >> ------ > > View the list online at: http://www.mail-archive.com/[email protected] > > You can unsubscribe at anytime by sending an email to mailto: > [email protected] with "unsubscribe neotek" in the message body. If > you have any difficulties, or questions --please send an email to mailto: > [email protected]. > > The Neotek list is lovingly hosted by Catapult Web. Remember that any > message or reply sent to the list will be automatically forwarded to all > subscribers. > > Vive Le Neotek! > > Thanks. >
