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Old 21st November 2012, 09:50 AM   #1
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Join Date: May 2007
Default Son of Zen v7 HiZ in

A forumfriend of mine, Bernd Jansson, is building a pair of watercooled Son of Zen with PP-coils. This is a pic from the initial testrun:

Click the image to open in full size.

As he wants the input to be cap-free, DC-free and high-impedance, we discussed a buffer. The reason is that a S&B TVC will be used.

By adding two NJFs in a kind of currentgenerator-mode this could be solved in a very simple way. The prototype will probably look like this:

Click the image to open in full size.

Theoretically this model looks good with for some reason indications of lower 3rd harmonic than the original.
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Old 21st November 2012, 04:27 PM   #2
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Join Date: May 2007
This is an idea(same concept) of a Zen (SE) version. This one also for some reason indicates lower, high/odd-order harmonics than the original Zen.

Click the image to open in full size.
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Old 21st November 2012, 05:52 PM   #3
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Have done some more sims and compared to "Zen Revisted" the results are on par but not worse. Fu-3 indicates to be somewhat higher in the buffered ones though. So technically it will probaly be good enough. Will have to wait for Bernd to test.
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