Go Back   Home > Forums > Amplifiers > Solid State

Solid State Talk all about solid state amplification.

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 1st March 2013, 07:27 AM   #921
diyAudio Member
 
ostripper's Avatar
 
Join Date: May 2008
Location: Albany , NY (smallbany)
Quote:
Originally Posted by Stormrider View Post
Sorry if I missed it, but what does R9, R10, and R14 do in the LTP CCS do?
I have the boards!!

#1 - will fill the BOM from mouser , mouser has a "shared cart" option.
I must learn the mouser way to "share" my cart (XML format) , then all the
premium parts (ha ha) that I pick will be a click away.

#2 - Since I have 4 boards (really!! ... guys) I will make 2 "flavors" of the badger...
one bjt input and one FET!!! input.

#3 - having the actual boards ... I can source the best components (looks +
specs) from the best distributors. --- mouser , digikey , even ebay (noble 5W .22R 10mm LS emitter resistors).

R9-10 are base stoppers to end any high gain CCS oscillation. R14 is a Douglas Self addition (read the book).

These boards are BEAUTIFUL !! I will use 2 for parties , the other 2 will be "lab'ed" to show the ultimate scope of this universal AB amp. (6 different amps on one board) ... that is how I designed it !!
OS
__________________
Mongrel website , always current and updated :
http://www.fidelityforce.com/ostripper
  Reply With Quote
Old 1st March 2013, 07:35 AM   #922
diyAudio Member
 
ostripper's Avatar
 
Join Date: May 2008
Location: Albany , NY (smallbany)
Quote:
Originally Posted by Stormrider View Post
Sorry if I missed it, but what does R9, R10, and R14 do in the LTP CCS do?
I have the boards!!

#1 - will fill the BOM from mouser , mouser has a "shared cart" option.
I must learn the mouser way to "share" my cart (XML format) , then all the
premium parts (ha ha) that I pick will be a click away.

#2 - Since I have 4 boards (really!! ... guys) I will make 2 "flavors" of the badger...
one bjt input and one FET!!! input.

#3 - having the actual boards ... I can source the best components (looks +
specs) from the best distributors. --- mouser , digikey , even ebay (noble 5W .22R 10mm LS emitter resistors).

R9-10 are base stoppers to end any high gain CCS oscillation. R14 is a Douglas Self addition (read the book).

These boards are BEAUTIFUL !! I will use 2 for parties , the other 2 will be "lab'ed" to show the ultimate scope of this universal AB amp. (6 different amps on one board) ... that is how I designed it !!
OS
__________________
Mongrel website , always current and updated :
http://www.fidelityforce.com/ostripper
  Reply With Quote
Old 1st March 2013, 03:43 PM   #923
mattmcl is offline mattmcl  United States
diyAudio Member
 
Join Date: Apr 2009
Location: Erie, CO
Fantastic! That's what I've been waiting for too. Thanks for all your hard work ostripper.
  Reply With Quote
Old 13th March 2013, 09:03 PM   #924
Lukky is offline Lukky  United States
diyAudio Member
 
Join Date: Nov 2011
Location: San Jose, CA
Stuffing my boards right now and wanted to express a little frustration: Some of the holes are a *little* too small. I'm not sure what the hole sizes are, but...

R6 on one of my boards had to be reamed out. The lead diameter of my resistor is 0.64mm.
R43-R48 had to be reamed on both boards. My lead diameter: 1.02mm.
C8, C18, C19 - Mica caps are fairly limited on Mouser. I had to get 500V versions for these three: lead diameter of 0.8mm.

Maybe on the next board spin these could be opened up a little. This is slowing me down!
  Reply With Quote
Old 18th March 2013, 06:36 PM   #925
Lukky is offline Lukky  United States
diyAudio Member
 
Join Date: Nov 2011
Location: San Jose, CA
Please don't take this as complaining, just trying to help make a better product.

On the back of the HB board there's solder mask covering C18 and C19. I scraped it off with a razor blade.
There's also mask over the "C-R-Z" jumpers in the cascode.
I didn't solder in any jumpers though, because there are already traces on the top layer.

...still a few days from firing it up. hopefully not in the literal sense.
  Reply With Quote
Old 21st March 2013, 02:13 PM   #926
diyAudio Member
 
danielwritesbac's Avatar
 
Join Date: Nov 2007
Quote:
Originally Posted by ostripper View Post
Since I have 4 boards (really!! ... guys) I will make 2 "flavors" of the badger...one bjt input and one FET!!! input.
Fet input? Oh, is this perchance, an integrated buffer, so that my laptop source can produce flat non-shout midband response and really rockin bass? Well, that performance does take a buffer and integrated would be really cool.
__________________
Tools, Models & Software for DIYClipNipper boostLM1875 TurboPowerful TDA7293 kitTDA7294 pt2pt ♦ My post has opinion.
  Reply With Quote
Old 31st March 2013, 04:46 AM   #927
Juvenal is offline Juvenal  United States
diyAudio Member
 
Join Date: May 2010
Quote:
Originally Posted by Lukky View Post
Stuffing my boards right now and wanted to express a little frustration: Some of the holes are a *little* too small. I'm not sure what the hole sizes are, but...

R6 on one of my boards had to be reamed out. The lead diameter of my resistor is 0.64mm.
R43-R48 had to be reamed on both boards. My lead diameter: 1.02mm.
C8, C18, C19 - Mica caps are fairly limited on Mouser. I had to get 500V versions for these three: lead diameter of 0.8mm.

Maybe on the next board spin these could be opened up a little. This is slowing me down!
I ran into the same issue, except with almost all my resistors..

Luckily I have access to a chemical lab at work and was able to etch the leads on the resistors instead of drilling the boards, that sped up things greatly.
  Reply With Quote
Old 28th April 2013, 07:38 AM   #928
diyAudio Member
 
Join Date: Mar 2013
hei and schematic amplifier please
  Reply With Quote
Old 28th April 2013, 07:10 PM   #929
diyAudio Member
 
Join Date: Apr 2008
Quote:
Originally Posted by marian adrian View Post
hei and schematic amplifier please
Practically everything you require may be found in the store link here:
The diyAB "Honey Badger" Class AB Power Amp - 150W/Channel (2 Channels) - PCBs
__________________
Regards,
currentflow
  Reply With Quote
Old 3rd May 2013, 08:27 PM   #930
Art M is offline Art M  United States
diyAudio Member
 
Join Date: Oct 2010
Location: SF Bay Area
Default Low voltage operation exception

Quote:
Originally Posted by ostripper View Post
R14 is a Douglas Self addition (read the book).
"And don't put a resistor in the tail of the input stage pair "
" The notional function of the resistor in the tail was to minimize the damage if the tail current-source transistor failed short-circuit "
" The unwanted result was that these amplifiers would not work on very low rail voltages.... " Douglas Self
  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
diyAB Amp The "Honey Badger" build thread Variac Solid State 1091 Yesterday 11:57 PM
Honey, I smoked the Weller 8200 jackinnj Equipment & Tools 5 25th April 2011 06:07 AM
Badger Badger Badger..... Mushroom !! 5th element Everything Else 15 20th September 2003 03:16 PM


New To Site? Need Help?

All times are GMT. The time now is 06:07 AM.


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