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Old 9th May 2013, 09:43 AM   #11
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Very interesting!
And how about the type of wire?
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Guglielmo
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Old 9th May 2013, 09:46 AM   #12
EUVL is offline EUVL  Europe
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Not worried about high inter-winding capacitances in a toroid ?
Also the second link for th 6025F did not return an item for purchase, despite registration ....


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Old 9th May 2013, 10:51 AM   #13
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sure I worried but after all the bandwidth is about 300KHz.

Sekels have a smaller core I just saw:
Online Catalog & Consulting - T60006-E4025-F001 T60006-E4025-F001


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Originally Posted by EUVL View Post
Not worried about high inter-winding capacitances in a toroid ?
Also the second link for th 6025F did not return an item for purchase, despite registration ....


Patrick
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Old 9th May 2013, 11:15 AM   #14
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Quote:
Originally Posted by esltransformer View Post
sure I worried but after all the bandwidth is about 300KHz.

Sekels have a smaller core I just saw:
Online Catalog & Consulting - T60006-E4025-F001 T60006-E4025-F001
Could you elaborate about tourns ratio for several gains and wire type? I need 1:10 20dB for a Denon DL103R?
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Old 9th May 2013, 11:15 AM   #15
EUVL is offline EUVL  Europe
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Many thanks for the quick response.
Clicking on the links still returns "No Product found".
Maybe just my problem.

In any case, what would be the loading on the cartridge ?
Or what would be a suitable cartridge ?


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Last edited by EUVL; 9th May 2013 at 11:21 AM.
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Old 9th May 2013, 11:17 AM   #16
EUVL is offline EUVL  Europe
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> Could you elaborate about turns ratio for several gains and wire type? I need 1:10 20dB?

40-turn primary / 600-turn secondary is 1:15.
But this is only more parameter out of many ....


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Old 9th May 2013, 11:50 AM   #17
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I can open the links i sended, i don't know if more people here cannot open them.
You find the Al-value in the links also so it's easy to calculate the minimum windings required.

btw what else you want to know?

Quote:
Originally Posted by EUVL View Post
> Could you elaborate about turns ratio for several gains and wire type? I need 1:10 20dB?

40-turn primary / 600-turn secondary is 1:15.
But this is only more parameter out of many ....


Patrick

Last edited by esltransformer; 9th May 2013 at 12:04 PM.
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Old 9th May 2013, 12:10 PM   #18
EUVL is offline EUVL  Europe
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The Denon DL-103R has an impedance of 14 ohm.
Would your above example in post #11 be suitable ?
What would be the typical leakage inductance ?
Should a shield be put on the outside ?

I am total idiot with transformers, so apologies for stupid questions.


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Last edited by EUVL; 9th May 2013 at 12:20 PM.
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Old 9th May 2013, 12:15 PM   #19
SY is offline SY  United States
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Quote:
Originally Posted by EUVL View Post
The Denon DL-103R has an impedance of 14 ohm.
The 103 is spec'd at 40R, and the samples I've seen were closer to 50R.
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Old 9th May 2013, 12:18 PM   #20
EUVL is offline EUVL  Europe
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You are absolutely correct with the DL-103 :
Denon DL-103 Phono Cartridge

The DL-103R, however, has different specs :
Denon DL-103R Phono Cartridge


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