hey, more than 8000 views
and just to let you know, Im still "working" on it
trying to figure out what kind of interstage specs I need 😕
actually it all started about 6 months ago, with another thread
http://www.diyaudio.com/forums/tubes-valves/171471-flea-ppp-all-ecc99.html
my first try to learn about tubes
and just to let you know, Im still "working" on it
trying to figure out what kind of interstage specs I need 😕
actually it all started about 6 months ago, with another thread
http://www.diyaudio.com/forums/tubes-valves/171471-flea-ppp-all-ecc99.html
my first try to learn about tubes
All of us are waiting to know how this baby sounds like.... it's been a loooooong 6 months.... when will we know the results???
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Why Tinitus? Do you think your previous driver had insufficient gain? Can this one comfortably provide enough swing? I haven't used D3A but I am accustomed to thinking of it more as a preamp valve.
I have sever doubts that a D3a will have the grunt to drive the interstage and the grids.
Shoog
Shoog
hey guys
nice to see you here
funny you say that
it's not ready yet
but what the heck, here it is
or some of it
output 6C19n will have 'ordinary' blumlein cathode bias
IT is still there
but not driving output
only doing phase splitting
and what else it might do
nice to see you here
funny you say that
it's not ready yet
but what the heck, here it is
or some of it
output 6C19n will have 'ordinary' blumlein cathode bias
IT is still there
but not driving output
only doing phase splitting
and what else it might do
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custom order from Dutch AEE(AutomaticElectricEurope)
not sure how I ended with 1.6Kohm
might be on the low side
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yeah
but 6C19n is also OTL territory 😉
but sure, I have been a bit fast ordering
and there's no way back now 🙂
btw, the nice C3g I bought for this project might be used to drive KT120 instead
whatever, instead of trying alternative connection for the LL1660 IT, I'm now using it stricktly as per Lundahl's suggestion
gives me more 'peace of mind'
nice to know, thanks
but this has to work 😉
well, I guess some kind of parafeed single ended could be an option also
still puzzled by that silly UL connecting of the C3g
I wonder if it could work like this 😕 just in theory, ofcourse
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Oh, please stop calling it the Blumlein garter, Blumlein never used it! It was patented by Martens in 1949 (FR64203), and transformer coupled versions even earlier (US2204578). But Blumlein had nothing to do with it!😛
[/rant]
hmm, I wonder about what that IT is doing to the ecc99 cathode
it is kind of directly connected to ground, through winding, with resistance
that should be ok so far, I guess
but with the cross referenced connection it is also 'inductively induced' with some kind of reversed phase signal
any ideas what that will do ?
will it also affect the grid winding through induction ?
just to make sure, interstage is wound like this
it is kind of directly connected to ground, through winding, with resistance
that should be ok so far, I guess
but with the cross referenced connection it is also 'inductively induced' with some kind of reversed phase signal
any ideas what that will do ?
will it also affect the grid winding through induction ?
just to make sure, interstage is wound like this
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ahh, had a look at QUAD II schematic
the CFB configuration
its not cross referenced
but instead use reversed connection of trafo
meaning opposite phase of plate load winding
I guess this means that if cross referenced, winding should not have reversed phase
it will have opposite phase due to the cross reference
well, I guess its best to have same polarity on the windings that are on top of each other
meaning, cross reference is the best way, yes ?
the CFB configuration
its not cross referenced
but instead use reversed connection of trafo
meaning opposite phase of plate load winding
I guess this means that if cross referenced, winding should not have reversed phase
it will have opposite phase due to the cross reference
well, I guess its best to have same polarity on the windings that are on top of each other
meaning, cross reference is the best way, yes ?