Some trafos on AP at +20db input
- Thread starter ijr
- Start date
Help Support GroupDIY Audio Forum:
Very fine specs indeed! What is source impedance for testing?
Jakob E.
Jakob E.
Hello Yakob!
Source was AP output at 600 Ohm,
input level +20 db.
Purpose: very high level a/d converter input trafo,
two options: one absolutely symmetric on secondary's
(not like tested J.
but with some colouration (Igor2)
and another (Igor1)is attempt to make trafo close to J. but with better specs...both designed and wound by IJ.
Now, what can I say?
Trafo's is WOODOO and....very hard stuff!
Not DIY'able in homelab;
and not "hack'able" but...
now I have my first own line transformer and can manufacture
them in small (tens) qty's!!!!
)))
(for those who see this as simple job: wind your own trafos it is not cheaper even a bit than buy-one only purpose is to get what you exactly need for your application.)
Source was AP output at 600 Ohm,
input level +20 db.
Purpose: very high level a/d converter input trafo,
two options: one absolutely symmetric on secondary's
(not like tested J.
but with some colouration (Igor2) and another (Igor1)is attempt to make trafo close to J. but with better specs...both designed and wound by IJ.
Now, what can I say?
Trafo's is WOODOO and....very hard stuff!
Not DIY'able in homelab;
and not "hack'able" but...
now I have my first own line transformer and can manufacture
them in small (tens) qty's!!!!
)))(for those who see this as simple job: wind your own trafos it is not cheaper even a bit than buy-one only purpose is to get what you exactly need for your application.)
Samuel Groner
Well-known member
AP2700 :evil: I want one too!
Was it a JT-6110K-B?
Samuel
Was it a JT-6110K-B?
Samuel
[quote author="ijr"]
Source was AP output at 600 Ohm,
input level +20 db.[/quote]
:shock: These are VERY good specs, then...!
Good work!
Jakob E.
Source was AP output at 600 Ohm,
input level +20 db.[/quote]
:shock: These are VERY good specs, then...!
Good work!
Jakob E.
Hi there, to all folks: get these specs is really pain.
And for people who search for cheap trafos-leave it,
go and buy Jensens. They done very commercially, but better than
others (manufactured in our days) I had in my hands.
But for some apps I need different trafos than 6110, then only way was manufacture them("diy" not right world here).
Lams aren't problem, bobbins and wires too, problem is TECHNOLOGY. Very complex-and a lot of a tricks on each step.
There's here one German folk (80years old),
who was working on Telefunken plant, and without his help it was impossible.
I have in my plans to make some trafos for selling to cover expenses of this project, and prices will be not high.
What do you think, folks?
And for people who search for cheap trafos-leave it,
go and buy Jensens. They done very commercially, but better than
others (manufactured in our days) I had in my hands.
But for some apps I need different trafos than 6110, then only way was manufacture them("diy" not right world here).
Lams aren't problem, bobbins and wires too, problem is TECHNOLOGY. Very complex-and a lot of a tricks on each step.
There's here one German folk (80years old),
who was working on Telefunken plant, and without his help it was impossible.
I have in my plans to make some trafos for selling to cover expenses of this project, and prices will be not high.
What do you think, folks?
rafafredd
Well-known member
Just great!!! I would buy some... It would be really nice to use some IJR ransformers in DIY units.
