Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Parts Where to get, and how to make the best bits. PCB's, caps, transformers, etc.

Lithos regulator - A new super regulator?
Lithos regulator - A new super regulator?
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 28th April 2004, 01:06 PM   #1
peranders is offline peranders  Sweden
Electrons are yellow and more is better!
diyAudio Member
 
peranders's Avatar
 
Join Date: Apr 2002
Location: Göteborg, Sweden
Lithos regulator - A new super regulator?
Default Lithos regulator - A new super regulator?

http://www.besthifiintheworld.com/cg...NXKFNZLS#litho
Has anybody seen this? Impressive data but what is gHz?
Attached Images
File Type: gif spex.gif (7.9 KB, 655 views)
__________________
/Per-Anders (my first name) or P-A as my friends call me
Group buy: SSR03 Super Regulator Power Supply. Sign up HERE 49 pcb's in interest so far.
  Reply With Quote
Old 28th April 2004, 02:01 PM   #2
analog_sa is offline analog_sa  Europe
diyAudio Member
 
analog_sa's Avatar
 
Join Date: Aug 2002
Location: Cascais
Quote:
what is gHz?
Apparently gilohertz. Spelling and accuracy don't seem the strong points of the creators.
  Reply With Quote
Old 28th April 2004, 02:16 PM   #3
Holger Barske is offline Holger Barske  Germany
diyAudio Member
 
Holger Barske's Avatar
 
Join Date: Jan 2001
Location: Ruhrgebiet
Is it useful to specify a THD figure for a voltage regulator?
And I hope "gHz" isn't meant to be Gigahertz...
__________________
Best regards: Holger
www.holgerbarske.com
  Reply With Quote
Old 28th April 2004, 02:34 PM   #4
jan.didden is offline jan.didden  Europe
diyAudio Member
 
jan.didden's Avatar
 
Join Date: May 2002
Location: The great city of Turnhout, BE
Quote:
Originally posted by HBarske
Is it useful to specify a THD figure for a voltage regulator?
And I hope "gHz" isn't meant to be Gigahertz...

Indeed, I am also mystified by the THD spec. I strongly support hi-quality supplies, but that THD spec? Also, the 1GHz (if that is it) spec is rather meaningless if you run a few cm of wiring or some PCB tracks to the DAC..

Jan Didden
  Reply With Quote
Old 28th April 2004, 02:41 PM   #5
peterr is offline peterr  Netherlands
diyAudio Member
 
peterr's Avatar
 
Join Date: Apr 2002
Location: Amsterdam
As far as I know this Lithos thing was designed by Tom Evans. I never heard his stuff, but (for what it's worth) they are rated very highly by the likes of Hifi+ magazine.
__________________
Keep an open mind. It helps.
Peter
  Reply With Quote
Old 28th April 2004, 04:38 PM   #6
Zombie is offline Zombie  Sweden
diyAudio Member
 
Join Date: Feb 2003
Location: At home
Quote:
Is it useful to specify a THD figure for a voltage regulator?
Unless the THD is referring to the noise as being harmonics of the 50/60 and 100/120 Hz

Cheers
  Reply With Quote
Old 28th April 2004, 05:09 PM   #7
peranders is offline peranders  Sweden
Electrons are yellow and more is better!
diyAudio Member
 
peranders's Avatar
 
Join Date: Apr 2002
Location: Göteborg, Sweden
Lithos regulator - A new super regulator?
Quote:
Originally posted by peterr
As far as I know this Lithos thing was designed by Tom Evans. I never heard his stuff, but (for what it's worth) they are rated very highly by the likes of Hifi+ magazine.
His pcb's looks nice and "industrial" but some of the "facts" seems to be a little bit ormolja but I don't doubt that his products are good, not bestintheworld maybe, but good.

I wonder how the THD came into this?

How is common mode defined in a voltage regulator?

Some of the parameters don't seem to fit and/or the values. I can't get a clear picture.... and I don't see a picture even


I notice also that no technical data is available but the price is visible.... not cheap.


orm = snake
olja = oil
__________________
/Per-Anders (my first name) or P-A as my friends call me
Group buy: SSR03 Super Regulator Power Supply. Sign up HERE 49 pcb's in interest so far.
  Reply With Quote
Old 8th May 2008, 03:01 PM   #8
zounds is offline zounds  Europe
diyAudio Member
 
Join Date: May 2008
I had a quick look at a +/-15V Lithos7 sitting in a Groove.

It's fairly standard series-reg with just one opamp and one pass transistor per supply. Both supply polarities are controlled by a single dual opamp, which may, or may not, be NE5532. Nothing funky, except that the opamps run at high noise gain (x7), and that the resistor values around the - reg are much lower in value than the + reg.

The single pos. voltage reference used is a 2-transistor or 1-ref / 1-transistor circuit I couldn't decode in a minute. Its voltage output goes into a gain-2 opamp/buffer.

The regulator is preregulated with 7818/7918s, and the reference and its buffer have another level of 7815/1915 preregulation.

The board is liberaly populated with bypass caps, 10uF Tants and 10nF ceramics.
  Reply With Quote

Reply


Lithos regulator - A new super regulator?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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Super Regulator TheDriver Parts 2 21st July 2008 11:54 AM
Super Regulator for a Gainclone peranders Power Supplies 7 1st April 2007 07:38 PM
Super Regulator for DAC rockytro Digital Source 11 19th May 2006 08:31 PM
WTB: Jung Super Regulator PCB's vadimgal Swap Meet 4 29th May 2005 07:04 PM


New To Site? Need Help?

All times are GMT. The time now is 07:49 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio
Wiki