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Old 28th August 2011, 02:19 PM   #521
AndrewT is offline AndrewT  Scotland
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Quote:
Originally Posted by Lazy Cat View Post
I know what's on your mind, something like this or even more outputs.
your link took me to post501.
Where was I supposed to go, to see "this"?
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Last edited by AndrewT; 28th August 2011 at 02:23 PM.
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Old 28th August 2011, 03:14 PM   #522
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Click on the link automatically redirect me to post #347
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Old 28th August 2011, 03:54 PM   #523
AndrewT is offline AndrewT  Scotland
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Simple Symetrical Amplifier

takes me to post347.

whereas
Simple Symetrical Amplifier

takes me to post501.
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Old 28th August 2011, 08:06 PM   #524
alex mm is offline alex mm  Romania
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Smile PCB rev 1.7

......have layout rev 1.7 with few pices of wires , PCB not tested !
Alex.
Attached Images
File Type: jpg SSA BIGBT SCH.jpg (594.0 KB, 1044 views)
File Type: jpg SSA BIGBT.jpg (454.1 KB, 987 views)
Attached Files
File Type: pdf SSA BIGBT.pdf (144.8 KB, 235 views)

Last edited by alex mm; 28th August 2011 at 08:33 PM.
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Old 28th August 2011, 08:25 PM   #525
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Excellent layout!

Nico

P.S. you have two IRF610, one should be 9610

Last edited by Nico Ras; 28th August 2011 at 08:29 PM.
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Old 28th August 2011, 08:46 PM   #526
alex mm is offline alex mm  Romania
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..... thanks Nico , you right , the IRF 9610 it's from minus voltage rail corrected .
Alex.
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Old 28th August 2011, 09:59 PM   #527
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Hey Alex you read my mind, great

Today I just started prototyping exactly this sch as you can see on the pic. But the board, hehe will check it tomorrow, it looks sooo good. Many thanks to you Alex and to all SSA thread followers.
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Last edited by Lazy Cat; 28th August 2011 at 10:01 PM.
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Old 28th August 2011, 10:49 PM   #528
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Lasy car you have treasur of transistors. I look around and 2sa1478/2sc3788 are quite difficult to find...
How have plan to provide +/-60V ?

Marc
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Old 29th August 2011, 02:58 AM   #529
abetir is offline abetir  Philippines
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Lazy Cat,
A few question here;
1) Can you please post the parts listing for SSA BIGBT 1.1 and the version that uses Lateral MOSFet [rev. 1.4 on Alex MM PCB], in order for us DIYer see the specified rating for each part, also it would be very helpful if you can include possible substitute for the given devices. I will be checking my local supplier if these devices is available to them.

2) Will it be possible to use any suitable PSU+DC protect on this amp? [I am thinking of using one of APExAudios’ PSU design] Hopefully APEXAudio will allow me... It is very encouraging for a DIYer like for an amp design that includes DC protect on board, however my interest is on both L-MosFET and BIGBT Basic that uses 24VAC supply. Any plans in including DC-protect on these versions?

NICO RAS,
Your PCB version is of different kind, will you share the PCB lay-out for etching?

Alex MM,
Please to not tire in providing remarkable PCBs to DIYAudio for without it, DIYer like me will surely find building an amp to be a very tedious and slow progress. Your continuing effort is surely invaluable. Thank you!

It was reassuring to know that authorities on amp building in DIYAudio has been complimenting a lot on the SSA design, the likes of AKSA, DESTROYER X, WaHAB, MiiB, AndrewT...to name a few and of course NICO RAS.

Regards,
ACO
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Old 29th August 2011, 09:13 AM   #530
styrkv is offline styrkv  Norway
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Default SSA BJT EC AMPLIWIRE-STYLE

HI.

The SSAstage and the listening-impresions given by members and constructor looks very promising!

I wonder if this outputstage can be used ?
My simulator says yes, but I`m not a simulatorwisard as some of you are.

I`m in the prosess of building a Amp with this output, ( bought and matched transistors)
but I`ll be happy if I can use SSA instead of the complicatet Electrocompaniet schematic.
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