Regarded new ideas for a future version of Zen, I started this threads
http://www.diyaudio.com/forums/pass...s-basic-description-italians-400-000-amp.html
http://www.diyaudio.com/forums/pass...adin-no-memory-distortion-ultimate-aleph.html
both topologies could be of interest therefore
http://www.diyaudio.com/forums/pass...s-basic-description-italians-400-000-amp.html
http://www.diyaudio.com/forums/pass...adin-no-memory-distortion-ultimate-aleph.html
both topologies could be of interest therefore
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
I really like the look of this device http://ixdev.ixys.com/DataSheet/9ad740a9-e21c-47ce-b454-fc3a9ba842d9.pdf
These look promising, I wonder if this is the device Nelson is talking about in the 'Nameless' thread...
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Realistically, the winner will be the one with the lowest
distortion in a simple circuit.
And so it shall be
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Such speculation. I have a number of new JFETs and
MOSFETs, some enhancement, some depletion. All high
voltage and power.
Realistically, the winner will be the one with the lowest
distortion in a simple circuit.
I'm going hedge my bet then, if it's not a power JFET, it's a MOSFET that looks and behaves like a JFET
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hmmmm, now I'm even more curious.
If it's not a simple case of swapping in and out different devices then we must have different devices wearing different hats. A power JFET below and something different for the current load ?
Or an attempt to go a step further than your 'sweet spot' article, combining two devices with different characteristics to achieve a 'super sweet spot' perhaps ?
If it's not a simple case of swapping in and out different devices then we must have different devices wearing different hats. A power JFET below and something different for the current load ?
Or an attempt to go a step further than your 'sweet spot' article, combining two devices with different characteristics to achieve a 'super sweet spot' perhaps ?
It's not generally a case of simply dropping new devices into
a given circuit, although that is often an indicator.
The "sweet spot" is always looked for, but I have never seen
a "super sweet spot". While conceptually possible, it is
unlikely, as once you get second harmonic cancellation all
the low hanging fruit are gone.
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well the zen 'papers' are still fresh for me, having only discovered them a month ago so it will be very nice to see the next chapter
If the concept of simplicity remains there can't be too many options to use up different devices here - input buffer, single stage amplifier, active load, and power supply (cap multiplier)
talking of 2nd harmonic removal... a zen-like symmetrical push-pull ? no it has to be SE !
If the concept of simplicity remains there can't be too many options to use up different devices here - input buffer, single stage amplifier, active load, and power supply (cap multiplier)
talking of 2nd harmonic removal... a zen-like symmetrical push-pull ? no it has to be SE !
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