There is also a "HV' 317 variant rated for a 60V in/out differential: http://www.national.com/ds/LM/LM317HV.pdf
Bri ---- Ike Zimbel <[email protected]> wrote: > I think what Matt was talking about was a TL-783 > http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=296-20687-5-ND. > best, > Ike > > eliya gwetta wrote: > > 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] <mailto:[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] <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] <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. > > > > > > -- > Ike Zimbel > Zimbel Audio Productions Ltd. > Toronto > 416-720-0887 > "Studio House Calls" - Repairs and upgrades to analog audio equipment > including: Amek, Allen & Heath, Neve, Neotek, MCI, Soundcraft and more. > > > ------ > > 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. ------ 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.
