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Old 26th July 2007, 06:50 AM   #1
invalid is offline invalid  Viet Nam
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Default Help me calculator OPT for 807, 6C4C tubes.

I want DIY OPT for 807 Tube, but I can't calculator number turn, wire size,....
I have FE 32, dim 4cm.
Zin range 2,5k to 6k.
Zout is 4Ohm, 8Ohm.
Please help me. In future, I use 6C4C tube.
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Old 26th July 2007, 04:14 PM   #2
Yvesm is offline Yvesm  France
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This should help:

http://www.dissident-audio.com/OPT_da/Page.html

Yves.
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Old 31st July 2007, 12:41 AM   #3
invalid is offline invalid  Viet Nam
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Thanks very much.
You can give me diagram for it? I have Fe 32, but I don't find this in list.
ex: I want OPT is:

Zin=3100 Ohm
Zout=8 Ohm.
Consequently: Sec turn? Pri turn? and turn in sesion.
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Old 31st July 2007, 06:32 AM   #4
Yvesm is offline Yvesm  France
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Hi ,

What is FE32 ?
Gimme some physical data or a sketch.

Yves.
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Old 31st July 2007, 07:57 AM   #5
cerrem is offline cerrem  United States
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WHat operating conditions, voltages are you using on the 807??
Is this TRIODE wired???

Chris
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Old 31st July 2007, 09:25 AM   #6
invalid is offline invalid  Viet Nam
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Sorry for my English.
This is my Fe:
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File Type: jpg fe.jpg (20.2 KB, 240 views)
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Old 31st July 2007, 09:25 AM   #7
invalid is offline invalid  Viet Nam
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Sorry for my English.

This is my Fe:
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File Type: jpg fe.jpg (20.2 KB, 220 views)
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Old 31st July 2007, 09:25 AM   #8
invalid is offline invalid  Viet Nam
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and my Scheme, sorry, I don't have scheme image, I draw by WORD.
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Old 31st July 2007, 04:25 PM   #9
Yvesm is offline Yvesm  France
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Hi,

Your iron size is very close to the "european" EI96B.

You could start this way.

Yves.
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Old 1st August 2007, 12:49 AM   #10
invalid is offline invalid  Viet Nam
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Thanks very much. If I want change values Zin to 3100 Ohm then power is decrease. But I can use for 6C4C or 6L6 in the future, It's correct?
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