Next Zen designs

Melon Head · 22nd October 2009, 07:09 AM

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

tiefbassuebertr · 22nd October 2009, 11:15 AM

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

Melon Head · 22nd October 2009, 02:35 PM

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.

Blues · 22nd October 2009, 05:55 PM

Next Gen Zen? I say it started with the F3, now the J2 and all the future power Jfet designs.

Nelson Pass · 25th October 2009, 07:37 PM

I believe we will soon see some next gen Zens (NGZ)
soon, based on new parts.

tiefbassuebertr · 26th October 2009, 12:22 AM

Quote:

Originally Posted by Nelson Pass

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

Melon Head · 26th October 2009, 12:42 AM

I really like the look of this device http://ixdev.ixys.com/DataSheet/9ad7...3a9ba842d9.pdf

Melon Head · 26th October 2009, 08:48 AM

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)

MEGA-amp · 26th October 2009, 09:17 PM

Quote:

Originally Posted by thanh1973

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...

Melon Head · 26th October 2009, 09:32 PM

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.

22nd October 2009, 07:09 AM	#1
Melon Head Formerly Thanh1973 Join Date: Nov 2006	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

22nd October 2009, 05:55 PM	#4
Blues Lightning In A Bottle diyAudio Member Join Date: Sep 2003 Location: Bremerton, WA	Next Gen Zen? I say it started with the F3, now the J2 and all the future power Jfet designs. __________________ Matched Toshiba FETs http://www.diyaudio.com/forums/swap-...ml#post2086375 Warpspeed CE http://www.diyaudio.com/forums/vendo...ml#post2357988

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22nd October 2009, 11:15 AM	#2
tiefbassuebertr diyAudio Member Join Date: Jul 2005 Location: D-55629 Schwarzerden	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

22nd October 2009, 02:35 PM	#3
Melon Head Formerly Thanh1973 Join Date: Nov 2006	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.

25th October 2009, 07:37 PM	#5
Nelson Pass The one and only Join Date: Mar 2001	I believe we will soon see some next gen Zens (NGZ) soon, based on new parts.

26th October 2009, 12:42 AM	#7
Melon Head Formerly Thanh1973 Join Date: Nov 2006	I really like the look of this device http://ixdev.ixys.com/DataSheet/9ad7...3a9ba842d9.pdf

26th October 2009, 09:32 PM	#10
Melon Head Formerly Thanh1973 Join Date: Nov 2006	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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