An externally hosted image should be here but it was not working when we last tested it.
I came to think of this on today??!
I have not seen anything like this i any thread about the PLH.
I know people have been trying to X the PLH, but i have never seen anyone come up with a 2 stage version?!
Will it work?
Johannes.
PLH or not - it is SUSY
look at Donut a' la overkill - DIY Audio Forum and , I believe - it's floating somewhere here too ...... ( now little searching ) as ........ ah - I found it :
http://www.diyaudio.com/forums/pass-labs/133433-choky-susy-f3-lu1014s.html
nota bene - I'm pretty fast on back on napkin ....... used to improve few things ditto on bench
look at Donut a' la overkill - DIY Audio Forum and , I believe - it's floating somewhere here too ...... ( now little searching ) as ........ ah - I found it :
http://www.diyaudio.com/forums/pass-labs/133433-choky-susy-f3-lu1014s.html
nota bene - I'm pretty fast on back on napkin ....... used to improve few things ditto on bench
Two stage is easy. I have both MOSFET and BJT versions :
http://www.diyaudio.com/forums/solid-state/3075-jlh-10-watt-class-amplifier-30.html#post658958
Single stage is a bit more tricky. I have not figured out an elegant solution as yet.
Patrick
http://www.diyaudio.com/forums/solid-state/3075-jlh-10-watt-class-amplifier-30.html#post658958
Single stage is a bit more tricky. I have not figured out an elegant solution as yet.
Patrick
If you are refering to this:
Then that is a three stage version. LTP input, phase-splitter and outputstage.
My version is without the LTP. I rearrenged the phasesplitters as a a LTP, but at the same time the are splitting the phase to each of the mosfets in the output section.
An externally hosted image should be here but it was not working when we last tested it.
Then that is a three stage version. LTP input, phase-splitter and outputstage.
My version is without the LTP. I rearrenged the phasesplitters as a a LTP, but at the same time the are splitting the phase to each of the mosfets in the output section.
How could you have a singelstage susy balanced PLH amp whitout the phasesplitting/input mosfet??? That would be a Son of Zen?!
An externally hosted image should be here but it was not working when we last tested it.
One, two and three stages????
One can argue whether a phase splitter is a stage or not.
If it is according to your definition, then I am most happy to give you that.
Innovative circuits, as one would expect from you.
Best regards,
Patrick
If it is according to your definition, then I am most happy to give you that.
Innovative circuits, as one would expect from you.
Best regards,
Patrick
I tend to think of the phasesplitter as a gainstage, since it does have a lot of gain. I asked just to understand what you meant by "single stage".
Thanks!! But i dont know if it will work????
I hope it will, but i dont know. Thats why i ask here.
Johannes.
The lower BJT in the phase splitter is just a source follower. In the all-FET version, I use equal resistors for top & bottom, so they are both gain <=1.
The PLH is a single stage. I tried to work out an X'ed version but came to nothing (see PLH thread). Perhaps Nelson has an idea.
I like your ideas; certainly different and often inspiring. Keep it up.
Patrick
PS Maybe someone would sim this one for you. I am not a fan of spice, and am rather short of time right now.
The PLH is a single stage. I tried to work out an X'ed version but came to nothing (see PLH thread). Perhaps Nelson has an idea.
I like your ideas; certainly different and often inspiring. Keep it up.
Patrick
PS Maybe someone would sim this one for you. I am not a fan of spice, and am rather short of time right now.
- Status
- Not open for further replies.