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Old 20th June 2009, 02:28 PM   #1
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Default Class A Amplifier

Design Idea. What do you think?
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Old 20th June 2009, 02:55 PM   #2
AndrewT is offline AndrewT  Scotland
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Hi,
how many mA can the 5534 give in ClassA before moving to ClassAB?
Why select a 5534 and then add a compensation cap to convert it to unity gain stable?
What is the 338 supposed to be doing? It certainly does not look like a CCS load for a single ended Sziklai follower.
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Old 20th June 2009, 03:03 PM   #3
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Hi Andrew,

Im writing a short specification. Posting it still sunday! Have to finish the specification of the PSU for tube amplifier posted in an other thread.

3 stage:
- voltage amplfier,
- current amplifier,
- and current source (LM338K).

You can use LF351, but I like the original PHILIPS NE5534.

Take a look at the LM395, is not a standard transistor. TO3 case is obsolete, we have to use the TO220 case.
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Old 21st June 2009, 10:30 AM   #4
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part 1 of the specification.
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File Type: zip pure class a stereo amplifier_part1.zip (73.4 KB, 90 views)
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Old 21st June 2009, 10:34 AM   #5
AndrewT is offline AndrewT  Scotland
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.docx
what is it?
which software opens it?
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Old 21st June 2009, 10:35 AM   #6
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part 2 of the specification.

to be continued...
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File Type: zip pure class a stereo amplifier_part2.zip (87.9 KB, 53 views)
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Old 21st June 2009, 10:48 AM   #7
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docx is Office 2007...

The converted PDF files are too big to post (>100kB)!
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Old 21st June 2009, 10:50 AM   #8
AndrewT is offline AndrewT  Scotland
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could you post them as standard .doc files?
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Old 21st June 2009, 11:02 AM   #9
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doc, docx, rar, zip...

and only 100kB per post!!!!!

here the doc file... part1
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File Type: zip pure class a stereo amplifier_part1.zip (69.4 KB, 42 views)
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Old 21st June 2009, 11:05 AM   #10
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here the doc file... part2
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File Type: zip pure class a stereo amplifier_part2.zip (84.4 KB, 22 views)
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