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 22nd August 2004, 03:32 PM   #1
lazyfly is offline lazyfly  Australia
diyAudio Member
 
Join Date: Jun 2004
Location: Melbourne
Default Possible GC layout?

Hi forum.

Please don't be to critical! Just wondering if any of you experienced folk can see any major drawbacks with this layout?

Selector switch will be on the rca socket side tucked in behind the heatsink with the volume pot on the opposite side. It's a gift for my son

The chassis is boring but it wasn't overly expensive nor large and should be fairly rugged (he's a ten year old so anything can happen.)

v+ v- etc will run from the psu to the side then along the panel to the rear then to the boards.

Thanks to Brian & Peter for their efforts in the kit - excellent quality that surpasses any type of kits I've seen in stores before. It certainly exceeded my expectations.

TIA

Click the image to open in full size.
Click the image to open in full size.
  Reply With Quote
Old 22nd August 2004, 03:43 PM   #2
diyAudio Moderator
 
pinkmouse's Avatar
 
Join Date: Apr 2002
Location: Chatham, England
Looks fine to me, though you will want to put the selector and volume as near to the inputs as possible, and the power lines as far from them as you can. Twisting the power lines helps to reduce noise as well, and if you have to run signal and power lines closely, try to make sure they are at right angles.

If you could make a little bracket to hold the selector switch and volume pot to the heatsink, (on the extreme left of your bottom photo), that should just about be perfect!

Good luck, and keep us updated with progress!
__________________
Al
I conceive of nothing, in religion, science or philosophy, that is more than the proper thing to wear, for a while. Charles Fort
  Reply With Quote
Old 22nd August 2004, 03:50 PM   #3
Mr Evil is offline Mr Evil  United Kingdom
diyAudio Member
 
Join Date: Aug 2004
Location: Behind you
I can't quite make it out in the pictures, but it looks like you haven't earthed the chassis yet. I would definitely recommend doing that, for improved safety, and RF shielding.
__________________
https://mrevil.asvachin.eu/
  Reply With Quote
Old 22nd August 2004, 04:12 PM   #4
lazyfly is offline lazyfly  Australia
diyAudio Member
 
Join Date: Jun 2004
Location: Melbourne
Default Hi-jacking the thread :)

Hi pinkmouse.

Thanks for the reply and input. When I said the selector would be tucked in behind the heatsink I meant that it would be on the flat side of the sink (amp board side) then a extension shaft would run to the front. The '+ - & ground' from the sel would fling under the amp boards to the vol pot which would be on the opposite side but as you point out that's rather close to the mains

Always something to learn which is half the fun.

They'll be mounted on brackets as you suggest, though, so I got that part right

Mr Evil.

In the bottom pic where the rear panel mounts to the chassis you can almost make out 3 solder lugs between the banana sockets but neither the boards or mains ground are wired up yet

*edit (re: thread hi-jack) After finally figuring out what the h*ll to do with a selector switch is there any reason why connecting a + rca ground to the - rca ground then to the selector 'in' ground? Sort of daisychaining + to - to 'in'? like the grey, white and yellow lines...

Click the image to open in full size.
  Reply With Quote
Old 22nd August 2004, 04:28 PM   #5
diyAudio Moderator
 
pinkmouse's Avatar
 
Join Date: Apr 2002
Location: Chatham, England
If you could bear to drill a hole in that great heatsink, then you could mount the pot on the opposite side to the traffo, and just use an extension to get to the front panel. That would give you just about the shortest cable runs possible!

Stick with the selector as near as the inputs as possible to avoid running too much cable. You can star all the input grounds, no need to run them to the input selector unless you really want to.
__________________
Al
I conceive of nothing, in religion, science or philosophy, that is more than the proper thing to wear, for a while. Charles Fort
  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
Eagle vs. Sprint-Layout for PCB design/layout hollowman Parts 11 12th January 2014 09:01 PM
Whose layout is this? Ulew Chip Amps 9 14th December 2008 02:33 PM
pcb layout jamesrnz Power Supplies 0 9th March 2008 12:42 AM
help for a PCB layout pencoat Parts 0 4th October 2006 01:52 AM
is my PSU layout OK? tinkerbell Solid State 26 31st March 2005 01:02 AM


New To Site? Need Help?

All times are GMT. The time now is 07:15 PM.


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