Topics Topics Edit Profile Profile Help/Instructions Help Member List Member List  
Search Last 1|3|7 Days Search Search Tree View Tree View  

DC/DC Power Supplies

:: EPE Chat Zone ­:: ­Radio Bygones Message Board :: » EPE Forum Archives 2005-2006 » Archive through 20 September, 2006 » DC/DC Power Supplies « Previous Next »

  Thread Last Poster Posts Pages Last Post
  ClosedClosed: New threads not accepted on this page        

Author Message
Top of pagePrevious messageNext messageBottom of page Link to this message

Eagre
Frequent Contributor
Username: Eagre

Post Number: 80
Registered: 05-2005


Rating: N/A
Votes: 0 (Vote!)

Posted on Thursday, 14 September, 2006 - 02:57 am:   Edit Post Delete Post Print Post

Can any6ne tell me how to convert a DC input into two isolated (not common ground) DC (LM78xx) DC outputs. I know this can be done with an AC input, but I want to avoid using a transformer.

eagre
Top of pagePrevious messageNext messageBottom of page Link to this message

Obiwan
Frequent Contributor
Username: Obiwan

Post Number: 704
Registered: 12-2005

Rating: N/A
Votes: 0 (Vote!)

Posted on Thursday, 14 September, 2006 - 03:45 am:   Edit Post Delete Post Print Post

How much power?

There's several designs out there.

I have one that I use a lot, two transistors, caps, resistors and a transformer you wind depending on your needs.
Do Not Hit The Fly That Lands On The Tigers Head.
Top of pagePrevious messageNext messageBottom of page Link to this message

Epithumia
Frequent Contributor
Username: Epithumia

Post Number: 95
Registered: 06-2006

Rating: N/A
Votes: 0 (Vote!)

Posted on Thursday, 14 September, 2006 - 08:57 am:   Edit Post Delete Post Print Post

Are these any good?

http://uk.farnell.com/jsp/search2/browse.jsp?N=500015+1003838+200638&_requestid= 305159
If you need me, Neil and me will be hanging out with the Dream King. - Tori Amos
Top of pagePrevious messageNext messageBottom of page Link to this message

Eagre
Frequent Contributor
Username: Eagre

Post Number: 81
Registered: 05-2005


Rating: N/A
Votes: 0 (Vote!)

Posted on Thursday, 14 September, 2006 - 11:46 pm:   Edit Post Delete Post Print Post

Tori - thanks. Unfortunately buying from Farnell is not possible, but I'll use the information you provided to find US suppliers.

Ed Grens

Administration Administration Log Out Log Out   Previous Page Previous Page Next Page Next Page