preamp supply LOW power LOW noise LOW cost - diyAudio
Go Back   Home > Forums > Amplifiers > Power Supplies

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
Reply
 
Thread Tools Search this Thread
Old 13th September 2010, 11:20 PM   #1
drdagor is offline drdagor  United States
diyAudio Member
 
Join Date: Mar 2004
Location: Seattle
Default preamp supply LOW power LOW noise LOW cost

Looking for help/advice on a low power supply to go with an RIAA preamp built on contemporary opamps.

Linear has a lovely set of parts starting with the LT 1763 (a good year for Mozart -- he was 10) and the negative mate -- the LT 1964 (a good year for John Lennon-- he was 20). And those two have been glued together in a single part -- the LT 3032. These make for a very low noise +/- 15 volt supply.

Except for the form factors on the parts, that are so weird they make me think the packaging guy at Linear was recovering from something strange when he put these little guys in plastic, these are neat parts. But a 14 pin DFN with embedded thermal pads (LT 3032). Sheesh.

Beyond dealing with the screwball form factors and picking capacitors and rectifiers very very carefully, what else is of big time concern in building a supply for an RIAA phono preamp? Any concerns about 150 ma not being enough juice?
__________________
Dr. Dagor
  Reply With Quote
Old 13th September 2010, 11:39 PM   #2
VivaVee is offline VivaVee  New Zealand
diyAudio Member
 
Join Date: Jun 2004
Location: Auckland, NZ
Quote:
Originally Posted by drdagor View Post
But a 14 pin DFN with embedded thermal pads (LT 3032). Sheesh.
This is a great package with good pin layout.

Texas Instruments also have positive and negative regulators with very low noise (not quite as low as the LT devices over a 10-100kHz bandwidth but certainly worthy of consideration)
__________________
Alan
Hope is not a reliable design discipline
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Low noise, low microphony, low hum valves MarcelvdG Tubes / Valves 38 28th January 2013 08:42 PM
Made in China,low cost,high quality,electronic components,power supply etc hang Vendor's Bazaar 1 16th September 2009 12:44 PM
Low space / Low cost B20 Trooper46 Full Range 5 13th September 2008 05:01 PM
power supply low noise GIPIONE Solid State 0 16th April 2005 03:33 PM


New To Site? Need Help?

All times are GMT. The time now is 09:57 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2