really dumb 78xx/79xx regulator question - Page 2

Nordic · 16th December 2006, 10:59 AM

Paul is correct, but still I nearly never use any fixed voltage regs anymore... got a busload here somewhere in a box, its just so much more flexible being able to adjust voltages. Sometimes of course this is nto needed, like say you are building a pic programmer...

And of coarse there is much better out there than the 317 and 337, but considering how cheap they are and that you just need two 4k7 trimpots for the majority of small voltages, and 120 to 220R biasing resistors... above what you allready have.

I'd love to see thse papers if you have a link 'drew.

AndrewT · 16th December 2006, 11:39 AM

http://waltjung.org/Library.html

bluesmoke · 16th December 2006, 08:06 PM

Great, thanks!

Will definitely be doing some reading up!

Cheers.
bluesmoke

16th December 2006, 11:39 AM	#12
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	http://waltjung.org/Library.html __________________ regards Andrew T.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
What's the best 78xx/79xx and B649/D669 replacement?	smellygas	Solid State	34	6th August 2009 09:54 PM
best sounding 78XX/79XX drop in Regulator Replacements?	ThorstenL	Digital Source	66	18th October 2006 05:59 AM
regulation of 78XX and 79XX at low curent	Jim Mullally	Parts	4	3rd June 2004 11:08 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

16th December 2006, 10:59 AM	#11
Nordic diyAudio Member Join Date: Sep 2005	Paul is correct, but still I nearly never use any fixed voltage regs anymore... got a busload here somewhere in a box, its just so much more flexible being able to adjust voltages. Sometimes of course this is nto needed, like say you are building a pic programmer... And of coarse there is much better out there than the 317 and 337, but considering how cheap they are and that you just need two 4k7 trimpots for the majority of small voltages, and 120 to 220R biasing resistors... above what you allready have. I'd love to see thse papers if you have a link 'drew.

16th December 2006, 08:06 PM	#13
bluesmoke diyAudio Member Join Date: Mar 2006 Location: Great White North	Great, thanks! Will definitely be doing some reading up! Cheers. bluesmoke

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)