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Old 22nd October 2009, 06:09 AM   #1
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Default Next Zen designs

Hi Nelson
What will the next zen designs look like?
Can you wet our appetites a bit while we wait for the articles to come out.

Also, put me down for one of your diy "for sale" designs

Thanks
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Old 22nd October 2009, 10:15 AM   #2
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Regarded new ideas for a future version of Zen, I started this threads
Inspiration for future ZEN Versions - basic description of Italians 400.000 $ Amp
Aleph (Single Ended) + Larvadin (no Memory Distortion) = Ultimate Aleph?
both topologies could be of interest therefore
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Old 22nd October 2009, 01:35 PM   #3
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Thanks. There is enough info there to keep me going for a few months.
I am definitely interested in what Nelson has in store for us though.
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Old 22nd October 2009, 04:55 PM   #4
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Next Gen Zen? I say it started with the F3, now the J2 and all the future power Jfet designs.
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Old 25th October 2009, 06:37 PM   #5
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I believe we will soon see some next gen Zens (NGZ)
soon, based on new parts.

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Old 25th October 2009, 11:22 PM   #6
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Quote:
Originally Posted by Nelson Pass View Post
I believe we will soon see some next gen Zens (NGZ)
soon, based on new parts.

for small signal applications there are dual gate MOSFETs, e. g. BF900/BF1214
BF900 datasheet and Application Note, Data Sheet, Circuit, PDF, Pinout | Datasheet Archive
BF1214 Dual N-channel dual gate MOSFET | datasheetpro.com


Are there also dual gate power MOSFETs, useful for audio SE power amplifier ?
CiNii*-* Low Switching Loss Power MOSFET with Dual Gate Structure
Lateral bidirectional power FET with notched multi-channel stacking and with dual gate reference terminal means - US Patent 4622569 Description
Load sensing circuit for a power MOSFET switch - US Patent 6809560 Abstract
A Novel Dual Gate Strained-Silicon Channel Trench Power MOSFET For Improved Performance
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Old 25th October 2009, 11:42 PM   #7
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I really like the look of this device http://ixdev.ixys.com/DataSheet/9ad7...3a9ba842d9.pdf
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Old 26th October 2009, 07:48 AM   #8
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Default IXYS vs IRF

The curiosity got the better of me.
Here is a zen circuit using IRFP240 and IXYS linear device
Top of the screen is IRFP240
Bottom of screen is IXYS Linear Mosfet (Enhancement Mode)
Attached Images
File Type: jpg irf vs ixys.JPG (267.8 KB, 397 views)
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Old 26th October 2009, 08:17 PM   #9
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Quote:
Originally Posted by thanh1973 View Post
I really like the look of this device http://ixdev.ixys.com/DataSheet/9ad7...3a9ba842d9.pdf
These look promising, I wonder if this is the device Nelson is talking about in the 'Nameless' thread...
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Old 26th October 2009, 08:32 PM   #10
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I think he is using the depletion mode mosfets.
These are the Linear mosfets (enhancement mode).
I will post the performance of them in the Aleph J circuit.
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