New source for ODS boards?

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EL34
Posts: 102
Joined: Mon Jul 25, 2005 10:54 pm
Location: Pisgah Forest, NC, USA
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Re: New source for ODS boards?

Post by EL34 »

Thanks for the info guys

My .125" thick FR4 board is 3.125 inches tall
I have it sawed up on a CNC saw machine and then shipped to me

Years ago I use to saw up the sheets myself on a table saw
I now have it ripped up by my supplier and they do a way nicer job that I ever did

I don't rip it length wise here any more because it was such a huge PITA
I only cut it to length

If having boards 3.125 inches wide is not a problem, I can make the power supply board and the main boards?

Here is couple examples of the FR4 boards I make with eyelets
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https://hoffmanamps.com - Website
https://el34world.com - Website
https://el34world.com/Forum/index.php - Hoffman Forum
https://www.facebook.com/Hoffmanamps/ - Facebook page
https://www.youtube.com/channel/UC6QMFC-nnVtRyjCIIwNnBqQ - YouTube channel
10thTx
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Joined: Sat Dec 30, 2006 1:13 am

Re: New source for ODS boards?

Post by 10thTx »

Looking at the documented layouts for #102, #124 and #182, would it be accurate to say that the main/preamp board is pretty much the same board for all 3 amps?

But the B+ rail layout board is different for each of those?

So, one would use the same main/preamp board and just switch out the B+ rail board to do each of those?

With respect, 10thtx
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ValvElectric
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Location: Santa Cruz, CA

Re: New source for ODS boards?

Post by ValvElectric »

To the best of my knowledge, though some of the preamp board values vary, the layout remains pretty much unchanged.
As for the power supply boards, the layout of #102 and #124 are relatively similar, whereas the precision power supply on #183 is a bit more complex and calls for a PCB.

Doug, it wasn't until recently that I noticed your relay boards and had contemplated giving them a try in my next build.
Does anyone else have any experience using them?
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EL34
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Re: New source for ODS boards?

Post by EL34 »

That makes it easier if I only have to make one type of board :D

I sell tons of the relay switch boards
The Power supply boards and single relay boards
https://hoffmanamps.com - Website
https://el34world.com - Website
https://el34world.com/Forum/index.php - Hoffman Forum
https://www.facebook.com/Hoffmanamps/ - Facebook page
https://www.youtube.com/channel/UC6QMFC-nnVtRyjCIIwNnBqQ - YouTube channel
10thTx
Posts: 1863
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Re: New source for ODS boards?

Post by 10thTx »

I've used Doug's relay boards on 4 builds and they are superb and very easy to work with. Very quiet and they work great!

And there is a ton of info on EL34 world on how to hook them up complete with photos, schematics and layouts.

http://el34world.com/Forum/index.php?topic=14348.0

And even more in the Hoffman Library of Information

With respect, 10thtx
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EL34
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Re: New source for ODS boards?

Post by EL34 »

Thanks 10thtx

The library hook up info page for my relay boards is here
http://el34world.com/projects/relay_switch.htm

[img:1284:550]http://el34world.com/projects/images/Img_7549.jpg[/img]
https://hoffmanamps.com - Website
https://el34world.com - Website
https://el34world.com/Forum/index.php - Hoffman Forum
https://www.facebook.com/Hoffmanamps/ - Facebook page
https://www.youtube.com/channel/UC6QMFC-nnVtRyjCIIwNnBqQ - YouTube channel
jborders5
Posts: 171
Joined: Thu Oct 18, 2007 2:07 am
Location: Phoenix, AZ

Re: New source for ODS boards?

Post by jborders5 »

Hey guys- I've received a few emails and PMs regarding the boards. I have a few remaining individual boards if Doug or others can supply the main and relays. I'm not able to update the website at this time as the computer I used to build it is in storage between recent moves.... Below is what is left & I just updated PayPal to not oversell anything. Please allow a few days to process and ship. Thanks.

(15) Precision Power Supply
(14) Standard Power Supply
(10) Bias/Rectifier
(6) Relay Power Supply
(30) FET
(11) Small (FET) Insulator
http://agbamplifiers.com/
Dumble Clone Circuit Boards
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xtian
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Re: New source for ODS boards?

Post by xtian »

The agbamplifiers.com site is dead. Where can I get a precision power supply board?
I build and repair tube amps. http://amps.monkeymatic.com
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dorrisant
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Re: New source for ODS boards?

Post by dorrisant »

Dave (Colossal) maybe?
"Education is what you're left with after you have forgotten what you have learned" - Enzo
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