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Old 7th April 2013, 12:14 AM   #4071
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I think that might have just let some air out, but I leav it to ZM for final word.
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Old 7th April 2013, 12:26 AM   #4072
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OK guyzzz

made it - proper balanced , either with 5-fiillar or 6-fillar

or , to not put a foot in BudP's territory - I don't care are they *-fillar or sectioned , as long they're good

I have no intention , same as I didn't had cojones any time before , to mess with Black Art .....

so , to put it in other way - proper balanced is possible with both 5 and 6 identical windings on one core

problem is - no so called summing feedback node ( two 18R resistors coneccted together and being one to another virtual gnd ) but instead of that - inverting feedback net must be used ;

but - as we already wrote before and BudP confirmed - everything is summing up through common core for all windings

are you guys interested in schmtcs ?

they're , shortly said , pretty much same as that previously posted one , except added one , or two , input modulating windings
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Old 7th April 2013, 12:46 AM   #4073
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Yup. I am gonna try to get all three in one layout.
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Old 7th April 2013, 12:57 AM   #4074
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disclaimer(s) :

- sim made by Mighty ZM , so ........ be warned !

- best feedback values/ratio yet to be determined ..... preferably in vivo

somehow , I think I prefer more 5-windings iteration

gnd is , anyway , just state of mind
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Old 7th April 2013, 02:36 AM   #4075
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If they must be truely balanced, inductance, capacitance and DCR then they must be fillar wound. Difference between 5 or 6 in hand is incidental to cost or size. What might be good to think on is how much inductance is really needed and how do the inductance's per node sum to the core, in the circuit? In addition, how linear does the inductance need to be from 20 Hz to 3.5 kHz, where 48% nickle core gives up and quits work?
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Old 7th April 2013, 02:46 AM   #4076
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considering Buzz's previous experience with your 4-way repeater , just add 5-th way

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Old 7th April 2013, 03:07 AM   #4077
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other than no complaints into the in box, I have no idea what buzz's experience has been, and do I not see 6 coil positions on the schematic? O are you referring to what I consider primary / secondary as the 5th repeater?
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Old 7th April 2013, 03:08 AM   #4078
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Quote:
Originally Posted by BudP View Post
If they must be truely balanced, inductance, capacitance and DCR then they must be fillar wound. Difference between 5 or 6 in hand is incidental to cost or size. What might be good to think on is how much inductance is really needed and how do the inductance's per node sum to the core, in the circuit? In addition, how linear does the inductance need to be from 20 Hz to 3.5 kHz, where 48% nickle core gives up and quits work?
Bud,
Im too dumb to know what to tell ya. If ZM can provide info, ill be buying some. If you gotta use more expensive cores, so be it. This amp is worth it to me.
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Old 7th April 2013, 03:11 AM   #4079
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Quote:
Originally Posted by BudP View Post
other than no complaints into the in box, I have no idea what buzz's experience has been, and do I not see 6 coil positions on the schematic? O are you referring to what I consider primary / secondary as the 5th repeater?
I just built more(possibly uneccesarily) complicated version, that sounds fantastic. It contains two of your transformers in a bridged setup. ZM has proposed two singl transformer versions. One is included in schema above. I would like to build it and prfer your work.
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Old 7th April 2013, 03:22 AM   #4080
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to Budp:
I'm saying that , taking all in account , 5-coils version will be good enough if you can make it in same quality as those 4-coil ones , you already sent to Buzzforb

Buzz - in post #4074 , left one is 5-coil , right one is 6-coil iteration
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