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Old 10th July 2012, 09:25 PM   #871
sonnya is offline sonnya  Denmark
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I Will get back tomorrow
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Old 10th July 2012, 09:29 PM   #872
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Sure, take your time.
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Old 30th July 2012, 09:15 PM   #873
sonnya is offline sonnya  Denmark
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Default Updated schematic TSSA release V1.0b

Hi all. After some vacation in Bibione Italy i am back to work.

I have attached the schematic for the the amp in the present state. It runs very very will.

There is a little hum close to the speaker, but that will be fixed.

The board layout will be changed this week. And hopefully next week the board will be released.
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File Type: pdf TSSA-01300712.pdf (61.4 KB, 282 views)
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Old 30th July 2012, 10:34 PM   #874
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Thank you. I will look at it carefully.
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Old 31st July 2012, 10:50 AM   #875
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Quote:
Originally Posted by sonnya View Post
Hi all. After some vacation in Bibione Italy i am back to work.

I have attached the schematic for the the amp in the present state. It runs very very will.

There is a little hum close to the speaker, but that will be fixed.

The board layout will be changed this week. And hopefully next week the board will be released.
Welcome back Sonny

I am also fully occupied with CSA build. CSA is maybe even better performer, yes IMHO hehe

Hardly wait to see new PCB's.

All the best to you and Gerhard too
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Old 31st July 2012, 11:07 AM   #876
mikelm is offline mikelm  England
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Hi Lazy Cat

Can you link to CSA Please - can't find it

thx
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Old 1st August 2012, 09:16 AM   #877
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Hi mikelm

There's no CSA thread yet, only CSA amp itself in assembly phase. Will start the thread when complete the build to the last detail. CSA amp is not far away from SSA/TSSA topology except it incorporates 22 transistors and 7 TL431 in front-end stage only. So it is obvious that a lot more attention was put into the last detail, thermal stability. Also all separate parts of the front-end sch were tested separately, pushed to the limits, measured, compensated, etc. If CSA will work on present PCB it will work perfectly, until than please stand by.

Best regards, Andrej
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File Type: jpg CSA BIGBT HP PCB.jpg (776.0 KB, 513 views)
File Type: jpg IMG_1152.jpg (550.8 KB, 483 views)
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Old 1st August 2012, 11:47 AM   #878
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Sonnya, the following parts are not labelled in your latest schematic: Q11, Q18-Q21, U3 & U4. Also missing are values of R33 (ought to be 220R), all trimpots (only catalogue numbers are indicated) & Vf of Red LEDs (type LTST-C170CKT). The foregoing and details of thermal coupling (may not be necessary as Lateral MOSFETs are used) etc., will help those who want to whip their own boards. Thanks.
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Old 1st August 2012, 12:02 PM   #879
sonnya is offline sonnya  Denmark
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Open the schematic in acrobat reader, then you can click on the parts and get data.

I will update the schematic, but a little digging yourself will learn you something about the parts.

Search for the parts on Farnell / Electronic Component Distributors / Suppliers / Electronics, Electrical Parts, Electrical Components and Wholesale Electronics.

There is no big need for thermal coupling, on this amp.

But i will make docs that will follow with the boards i ship. But i will do this in the commercial section.

TSSA V1.5
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Old 1st August 2012, 01:55 PM   #880
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Quote:
Originally Posted by Lazy Cat View Post
Hi mikelm

There's no CSA thread yet, only CSA amp itself in assembly phase. Will start the thread when complete the build to the last detail. CSA amp is not far away from SSA/TSSA topology except it incorporates 22 transistors and 7 TL431 in front-end stage only. So it is obvious that a lot more attention was put into the last detail, thermal stability. Also all separate parts of the front-end sch were tested separately, pushed to the limits, measured, compensated, etc. If CSA will work on present PCB it will work perfectly, until than please stand by.

Best regards, Andrej
Great news, LC! Boards look....simple
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