VBITNGC building & comment - diyAudio
Go Back   Home > Forums > Amplifiers > Chip Amps

Chip Amps Amplifiers based on integrated circuits

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 9th November 2005, 05:18 AM   #1
digi01 is offline digi01  China
diyAudio Member
 
digi01's Avatar
 
Join Date: Mar 2003
Location: BEIJING
Send a message via MSN to digi01
Default VBITNGC building & comment

dear all,
the thread is starting for vgitngc project assembly & developent.

project antetype below:
T-network: the better feedback solution?
Projects for next hollidays (the world smallest VBITNGC??)
pcb boards set group order below:
VBITNGC group buy

Zang
  Reply With Quote
Old 9th November 2005, 05:34 AM   #2
digi01 is offline digi01  China
diyAudio Member
 
digi01's Avatar
 
Join Date: Mar 2003
Location: BEIJING
Send a message via MSN to digi01
step by step assembly with photos.
the vbitngc has 3 units.the first assembly is tube buffer unit.

Part list below:
Tube PCB *1
E88CC*1
10K 2W*2
3.3K 0.4W*2
1uf 200V mkp *2 *
the sch of tube buffer and amp

**
the tube that I used is 6922.the coupling caps is 2 ero 0.47uf160v connected in parallel per channel.

the source of suitable tube sockets:
http://www.diyaudio.com/forums/showt...149#post758149
http://www.diyaudio.com/forums/showt...154#post758154
thanks dave
Attached Images
File Type: jpg vbitngc1.jpg (98.6 KB, 4807 views)
  Reply With Quote
Old 9th November 2005, 05:52 AM   #3
digi01 is offline digi01  China
diyAudio Member
 
digi01's Avatar
 
Join Date: Mar 2003
Location: BEIJING
Send a message via MSN to digi01
the connection wires(from psu to amp) should be get ready now.there are 9 wires,I think the length 150(mm)-300(mm) is pretty.
the high current wires(3) is 1.2mm diameter.the others are 0.6mm diameter.I use the teflon cable.
Attached Images
File Type: jpg vbitngc2.jpg (95.5 KB, 4490 views)
  Reply With Quote
Old 9th November 2005, 05:54 AM   #4
digi01 is offline digi01  China
diyAudio Member
 
digi01's Avatar
 
Join Date: Mar 2003
Location: BEIJING
Send a message via MSN to digi01
buffer with cables.
Attached Images
File Type: jpg vbitngc3.jpg (99.1 KB, 4522 views)
  Reply With Quote
Old 9th November 2005, 05:59 AM   #5
digi01 is offline digi01  China
diyAudio Member
 
digi01's Avatar
 
Join Date: Mar 2003
Location: BEIJING
Send a message via MSN to digi01
the coupling caps sets up at the bottom of pcb.
OK,then the tube buffer is completed!

Zang
Attached Images
File Type: jpg vbitngc4.jpg (13.9 KB, 4656 views)
  Reply With Quote
Old 10th November 2005, 04:58 AM   #6
digi01 is offline digi01  China
diyAudio Member
 
digi01's Avatar
 
Join Date: Mar 2003
Location: BEIJING
Send a message via MSN to digi01
the second assembly is amp unit.
The parts for the amps board were printed by their value on the boards.
Part list below:
AMP PCB *1
LM3875TF *2
50K log Poti stereo *1
330uF / 35V low ESR *4
180R 0.4W 1% *2
18K 0.4W 1% *6
47K 0.4W 1% *2

**
the bypass caps that I used is Fc 100uf/35V.
Attached Images
File Type: jpg vbitngc5.jpg (96.9 KB, 4641 views)
  Reply With Quote
Old 10th November 2005, 05:01 AM   #7
digi01 is offline digi01  China
diyAudio Member
 
digi01's Avatar
 
Join Date: Mar 2003
Location: BEIJING
Send a message via MSN to digi01
the bottom view of amp board,I have not set up the 'T' network.
Attached Images
File Type: jpg vbitngc7.jpg (98.7 KB, 3687 views)
  Reply With Quote
Old 10th November 2005, 05:03 AM   #8
digi01 is offline digi01  China
diyAudio Member
 
digi01's Avatar
 
Join Date: Mar 2003
Location: BEIJING
Send a message via MSN to digi01
buffer has set up on the amp.
Attached Images
File Type: jpg vbitngc6.jpg (99.1 KB, 3890 views)
  Reply With Quote
Old 10th November 2005, 05:06 AM   #9
diyAudio Member
 
Join Date: Nov 2004
Location: Texas
looks good digi...got any pics of the housing your going to put it in?
__________________
"I Love To Camp!"
"Comensing Shock Therapy!"
  Reply With Quote
Old 10th November 2005, 05:26 AM   #10
diyAudio Member
 
Join Date: Aug 2003
Location: Prague,Czech Republic
Digi, do you have a submarine ?
  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
HV supply please comment before building bembel Tubes / Valves 8 5th December 2006 10:16 AM
VBITNGC group buy digi01 Group Buys 47 28th February 2006 07:21 AM
My Building Plans: Comment and suggest... asgorath Chip Amps 13 9th July 2005 06:41 AM
VBITNGC integraded PC? bjefferys Chip Amps 1 30th March 2005 01:27 AM


New To Site? Need Help?

All times are GMT. The time now is 06:39 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