Baaaaad Papa !
........ just deleted 3 lines of typed text ; there is no use of it .......
boyzzzzz'n'girliez - take a good look at these two horizontally drawn resistors
edit : inserted picture , with two horizontal resistors
........ just deleted 3 lines of typed text ; there is no use of it .......
boyzzzzz'n'girliez - take a good look at these two horizontally drawn resistors
edit : inserted picture , with two horizontal resistors
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looks promising
I am doing a similar thing with tube front and vfets output.
Not sure about the feedback setup.Will be an interesting read.
I am doing a similar thing with tube front and vfets output.
Not sure about the feedback setup.Will be an interesting read.
The Devil is in the details.
Having only n type output devices - reminds me of tubes.
Could a jFET be used as a phase splitter instead of the transformer ?
I take it the voltage gain stage would have active regulation
and the current section would have passive "regulation."
Having only n type output devices - reminds me of tubes.
Could a jFET be used as a phase splitter instead of the transformer ?
I take it the voltage gain stage would have active regulation
and the current section would have passive "regulation."
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gee transformer,,,,
I wonder now some times PEOPLE shun
tranformers and now ,,,look what popped up,lol A fetaformertransnomer,lol.😀
I'll listen to it ,,,,,,,
Cheers,🙂
NS
Papa ,you get the reaction you wanted,lol.
I wonder now some times PEOPLE shun
tranformers and now ,,,look what popped up,lol A fetaformertransnomer,lol.😀I'll listen to it ,,,,,,,
Cheers,🙂
NS
Mr. Pass: Is it correct to assume that the secondary windings of the transformer turn on the attendant FET in a synchronous fashion; meaning one is on more ON while the other is more OFF? Are the FETs SIT and/or enhancement? Is there a Patent Pending,? Brilliant topology including the novel loop feedback.
The transformer secondaries are set up to drive the Fets in a matched
fashion, if that is what you're asking.
The Fets can be a wide variety of devices. In this case, R100's.
I no longer apply for patents.
I haven't seen this feedback mechanism as such, but you can be
sure it's been done one way or another, probably a long time ago.
😎
fashion, if that is what you're asking.
The Fets can be a wide variety of devices. In this case, R100's.
I no longer apply for patents.
I haven't seen this feedback mechanism as such, but you can be
sure it's been done one way or another, probably a long time ago.
😎
Mr. Pass. Thank you for replying. The secondary windings [phase circles] as shown confused me. When the upper winding has a rising positive signal, the upper FET turns on. Simultaneously the lower FET has a matching negative signal to turn it off. Is this an approach similar to OTL [output transformerless] from the past; with identical polarity semiconductors. Then, audiophiles grumbled about an output transformer[phase abberations]; so the interstage one was kept as a compromise [and also absent complemetary devices] because it is inherently higher fidelity. I may have past articles from Radio and Popular Electronics on OTL topology.
What disadvantages are to be expected by the use of a single ended input driver stages instead the here showed push-pull jFET version?
BTW - in this case this URLs are also of interest:
http://www.susan-parker.co.uk/zeus.htm
http://www.diyaudio.com/forums/solid-state/42259-zero-feedback-impedance-amplifiers.html
http://www.diyaudio.com/forums/solid-state/24744-push-pull-using-only-n-channel-mosfets.html
http://www.tubecad.com/2004/blog0006.htm
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