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

Pass Labs This forum is dedicated to Pass Labs discussion.

50w Single-Ended BAF2015 Schade Enabled
50w Single-Ended BAF2015 Schade Enabled
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 5th May 2016, 12:35 AM   #21
RobLK is offline RobLK  United States
diyAudio Member
 
Join Date: Jan 2009
Location: Florida
Yes, with some of the noctua fans you need to have your ear pretty close before you hear them. You don't need much cfm to make a big difference in cooling either. The air needs to be pushed through the fins of the heat sink. Figure 6 in this link shows how much difference it can make with just a little cfm.
How to Select a Suitable Heat Sink
  Reply With Quote
Old 5th May 2016, 12:44 AM   #22
vdi_nenna is offline vdi_nenna  United States
diyAudio Member
 
vdi_nenna's Avatar
 
Join Date: Oct 2000
Location: PA, USA
50w Single-Ended BAF2015 Schade Enabled Send a message via Yahoo to vdi_nenna
Quote:
Originally Posted by 2 picoDumbs View Post
I'm still undecided whether a nice raw hack job or do a pcb.
You could do this one blindfolded!
__________________
I build, therefore I am.
  Reply With Quote
Old 5th May 2016, 01:36 AM   #23
2 picoDumbs is offline 2 picoDumbs  Australia
diyAudio Member
 
2 picoDumbs's Avatar
 
Join Date: Sep 2013
Might need to do a pcb for transformer if the pins don't line up on proto board.
The rest should be doable hack style.
__________________
"If you leave this point unattached to some circuitry, an ideal constant current source will emit a small lightning bolt which will travel until it connects to something." Nelson Pass
  Reply With Quote
Old 5th May 2016, 03:39 AM   #24
Superstrand is offline Superstrand  United States
diyAudio Member
 
Superstrand's Avatar
 
Join Date: Apr 2013
Location: Ohio
Untested DRAFT PCB layout for comment. It will cost me the same to buy two boards as it will six, so I'll donate and ship two pairs to anyone interested in helping to prototype the hockey puck "sh*t amp."
Attached Images
File Type: png Shitamppcb1.png (15.6 KB, 1106 views)
File Type: png shitamppcb2.png (87.8 KB, 1097 views)
  Reply With Quote
Old 5th May 2016, 03:42 AM   #25
2 picoDumbs is offline 2 picoDumbs  Australia
diyAudio Member
 
2 picoDumbs's Avatar
 
Join Date: Sep 2013
First up.
The 10uF cap at output is intended to be a polypropylene cap not an electrolytic.
__________________
"If you leave this point unattached to some circuitry, an ideal constant current source will emit a small lightning bolt which will travel until it connects to something." Nelson Pass
  Reply With Quote
Old 5th May 2016, 03:46 AM   #26
2 picoDumbs is offline 2 picoDumbs  Australia
diyAudio Member
 
2 picoDumbs's Avatar
 
Join Date: Sep 2013
For R4 and R5 it might be worthwhile allowing paralleled pairs of resistors.
__________________
"If you leave this point unattached to some circuitry, an ideal constant current source will emit a small lightning bolt which will travel until it connects to something." Nelson Pass
  Reply With Quote
Old 5th May 2016, 03:49 AM   #27
Superstrand is offline Superstrand  United States
diyAudio Member
 
Superstrand's Avatar
 
Join Date: Apr 2013
Location: Ohio
Quote:
Originally Posted by 2 picoDumbs View Post
First up.
The 10uF cap at output is intended to be a polypropylene cap not an electrolytic.
GOOD CATCH!!
Ill wait a bit until the rest of my mistakes are discovered and then post a revision!
  Reply With Quote
Old 5th May 2016, 04:01 AM   #28
2 picoDumbs is offline 2 picoDumbs  Australia
diyAudio Member
 
2 picoDumbs's Avatar
 
Join Date: Sep 2013
What lead spacing and diameter have you allowed for the 1000uF caps.
Some people are anal about using Elna Silmic Caps, so something to consider.
__________________
"If you leave this point unattached to some circuitry, an ideal constant current source will emit a small lightning bolt which will travel until it connects to something." Nelson Pass
  Reply With Quote
Old 5th May 2016, 05:17 AM   #29
Superstrand is offline Superstrand  United States
diyAudio Member
 
Superstrand's Avatar
 
Join Date: Apr 2013
Location: Ohio
Quote:
Originally Posted by 2 picoDumbs View Post
What lead spacing and diameter have you allowed for the 1000uF caps.
Some people are anal about using Elna Silmic Caps, so something to consider.
Lead spacing on 1000mfd caps is 7.5mm which I believe is the spacing for the highest voltage 18x40 Elnas.
  Reply With Quote
Old 5th May 2016, 06:01 AM   #30
Superstrand is offline Superstrand  United States
diyAudio Member
 
Superstrand's Avatar
 
Join Date: Apr 2013
Location: Ohio
Quote:
Originally Posted by 2 picoDumbs View Post
For R4 and R5 it might be worthwhile allowing paralleled pairs of resistors.
Thanks, here's a revision with your suggestions!
Attached Images
File Type: png Shitamppcbrev1.png (87.5 KB, 1065 views)
  Reply With Quote

Reply


50w Single-Ended BAF2015 Schade EnabledHide 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
Single tube, Single ended, 20W, impossible? dannydanger Tubes / Valves 39 1st June 2017 08:18 PM
Single High power Mosfet for big Single Ended Amp ? Ado Solid State 20 25th February 2016 03:32 AM
Single Ended, Single driver: In-room distortion measurements Gerrit Boers Full Range 4 27th November 2007 08:12 AM
Anyone play with the Zen Single-Stage Single-Ended Class A? Rino odorico Pass Labs 13 29th August 2002 09:01 AM


New To Site? Need Help?

All times are GMT. The time now is 11:45 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki