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

Solid State Talk all about solid state amplification.

Post your Solid State pics here.
Post your Solid State pics here.
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 Yesterday, 11:47 AM   #6031
jwilhelm is offline jwilhelm  Canada
diyAudio Member
 
Join Date: Jun 2014
Location: New Hamburg, Ontario
Quote:
Originally Posted by ostripper View Post
And that is only 2005 - 2008 controller chip technology.


After 2010 active PFC , active frequency smps's with 95% eff. even at low power
levels are possible.


The designs are all centered around the features of the controller. Simple 8 pin
controllers will give "dirty" harmonic rich square wave switching.
NPX "greenchips" will be more complicated , but give sine based flyback
with variable frequency control , audiophile plus !!
Use ultralow Rdson mosfets , almost no heat and super clean rails.
Here is a 2018 design - way beyond even the Connex.

http://www.ti.com/lit/df/tidrt45a/tidrt45a.pdf

PS - the way of my new sub - SMPS 300w + a 200w class D = no heatsinks , inside the enclosure cooled
by the port flow. L/R will be SMPS + class AB/G "oldschool" amps.

OS
The new amps sound like a pretty cool design! AB/G sounds interesting! I like modern technology if it's applied properly, unfortunately most applications seem to be cutting corners to save a buck lately.
__________________
https://www.vzaudio.com/
  Reply With Quote
Old Yesterday, 01:51 PM   #6032
ostripper is offline ostripper  United States
diyAudio Member
 
ostripper's Avatar
 
Join Date: May 2008
Location: Smoky Mountains , Tennessee
Quote:
Originally Posted by jwilhelm View Post
The new amps sound like a pretty cool design! AB/G sounds interesting! I like modern technology if it's applied properly, unfortunately most applications seem to be cutting corners to save a buck lately.

They all try to save a buck. (or 2).


3 levels -


1-8$ ebay switcher , (below 1). Better keep it in a faraday cage , it will kill
bluetooth and wifi otherwise. Scope the mains , you will see how "dirty"
it is under load. LED bulbs and other cheap Chinese plugins are even worse ,
AM radio's will not work too good in a modern "smart" home.

BTW - the 8$ switcher trafo can be rewound to make a 5A 35-0-35V supply
for another 5$ (i did that).

2-PC supply - Corsair (below 2)
PFC + regulation + more safety features. Not all are like this , NO-name OEM
(or EVGA) .... garbage !!! NOPE !
Some will even burn out the PWM on your expensive motherboard or kill a whole house wifi with RF garbage,


3-TOP level = PFC , variable freq , low rdson fet's , regulation , sine wave
flyback operation .
Preferable for audio , these have a more advanced (forward converter/current
sense - second attachment) ,running better mosfets. You won't see the load
on the mains .... they truly replace (and out-perform) , the analog.
IF - you get ANAL on the discrete sourcing , it is possible to achieve safety
and longevity that would put any bulky analog to ABSOLUTE shame.

PS - a good quality used 500w PC supply can be turned into an audio supply for about
10$ in an hour.

OS
Attached Images
File Type: png s-12-120-smps.png (69.0 KB, 165 views)
File Type: gif corsair powersupply_schematic.gif (84.7 KB, 166 views)
__________________
Wanderer - my travels.... Facebook - davyjones lockre -
  Reply With Quote
Old Yesterday, 09:02 PM   #6033
Bonsai is offline Bonsai  Europe
diyAudio Member
 
Bonsai's Avatar
 
Join Date: Jul 2003
Location: Europe
Better start a new thread Ostripper - you will have plenty of interested parties. Maybe the mods can help here 'Ostripper SMPS+Class D' ?
__________________
bonsai
https://www.ovationhifidelity.com/ and DIY here http://hifisonix.com/
  Reply With Quote
Old Today, 12:44 AM   #6034
greenocean is offline greenocean  Indonesia
diyAudio Member
 
Join Date: Oct 2012
Quote:
Originally Posted by ostripper View Post
They all try to save a buck. (or 2).


3 levels -


1-8$ ebay switcher , (below 1). Better keep it in a faraday cage , it will kill
bluetooth and wifi otherwise. Scope the mains , you will see how "dirty"
it is under load. LED bulbs and other cheap Chinese plugins are even worse ,
AM radio's will not work too good in a modern "smart" home.

BTW - the 8$ switcher trafo can be rewound to make a 5A 35-0-35V supply
for another 5$ (i did that).

2-PC supply - Corsair (below 2)
PFC + regulation + more safety features. Not all are like this , NO-name OEM
(or EVGA) .... garbage !!! NOPE !
Some will even burn out the PWM on your expensive motherboard or kill a whole house wifi with RF garbage,


3-TOP level = PFC , variable freq , low rdson fet's , regulation , sine wave
flyback operation .
Preferable for audio , these have a more advanced (forward converter/current
sense - second attachment) ,running better mosfets. You won't see the load
on the mains .... they truly replace (and out-perform) , the analog.
IF - you get ANAL on the discrete sourcing , it is possible to achieve safety
and longevity that would put any bulky analog to ABSOLUTE shame.

PS - a good quality used 500w PC supply can be turned into an audio supply for about
10$ in an hour.

OS
Dear Os, maybe we can learn from this
1. Yamaha
Yamaha EMX5000 : Halfbridge, unregulated, IR2153
XMV8140 (class D IRS2092) : halfbridge, unregulated, SG3525 with PFC
T5n (EEEngine) : halfbridge, unregulated, SG3525
XP5000 (EEEngine) : halfbridge, unregulated, SG3525
PC9501 (EEEngine) : halfbridge, unregulated, SG3525
YST-SW800 : self oscillating, halfbridge, unregulated
2. C-audio
Pulse series : halfbridge, unregulated, SG3525
3. Crown
CTS 4200A : halfbridge, unregulated, SG3525
4. Labgruppen
Fp3400 : flyback, unregulated, UC3851
Lab4000 : flyback, unregulated, UC3851
5. QSC
PLX series (PLX-1202): halfbridge, unregulated, SG3525
Powerlight Series : halfbridge, unregulated, SG3525
6. NAD
M22 : halfbridge, unregulated, synchronous rectifier, TL494
7. BEHRINGER
PMP500 : SPS1000, halfbridge, unregulated, IR2153
SMPSU18 : halfbridge, unregulated, SG3525
8. CARVIN
BX1500 : halfbridge, unregulated, resonant, IR2153


Quote:
Originally Posted by Bonsai View Post
Better start a new thread Ostripper - you will have plenty of interested parties. Maybe the mods can help here 'Ostripper SMPS+Class D' ?

I agree
  Reply With Quote
Old Today, 01:22 AM   #6035
ostripper is offline ostripper  United States
diyAudio Member
 
ostripper's Avatar
 
Join Date: May 2008
Location: Smoky Mountains , Tennessee
"mods can help" - condescending.


I was not going to do class D.
Just power ab with smps.

I "learned" OEM = cheap junk = profit

IR2153 ,sg3525 , almost 20th century.


I won't post anymore.


os
__________________
Wanderer - my travels.... Facebook - davyjones lockre -
  Reply With Quote
Old Today, 04:18 AM   #6036
anatech is offline anatech  Canada
diyAudio Moderator
 
anatech's Avatar
 
Join Date: Jun 2004
Location: Georgetown, On
Post your Solid State pics here.
Hi os,
You know we don't want that!

-Chris
__________________
"Just because you can, doesn't mean you should" my Wife
  Reply With Quote
Old Today, 05:03 AM   #6037
thimios is offline thimios  Greece
diyAudio Member
 
Join Date: Aug 2009
Location: Agrinion
Pete please, just don't do this!

Last edited by thimios; Today at 05:05 AM.
  Reply With Quote
Old Today, 11:36 AM   #6038
Bonsai is offline Bonsai  Europe
diyAudio Member
 
Bonsai's Avatar
 
Join Date: Jul 2003
Location: Europe
Nothing condescending about it - just a proposal since this is the thread with pics of peoples gear. Why not put your stuff in a dedicated thread?
__________________
bonsai
https://www.ovationhifidelity.com/ and DIY here http://hifisonix.com/
  Reply With Quote

Reply


Post your Solid State pics here.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


New To Site? Need Help?

All times are GMT. The time now is 12:05 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki