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Wiring a multi filament transformer?
Wiring a multi filament transformer?
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Old 21st January 2017, 08:30 AM   #1
DAK808 is offline DAK808  United States
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Wiring a multi filament transformer?
Default Wiring a multi filament transformer?

I have a mil type potted power transformer with 2 6.3vac filament taps. 1 pair is 4 amp for the power tubes, and the other pair is `1.2A for the signal tubes. So, the tubes will be located at the end of the chassis about 14" from the power trans.
I am thinking i will run 1 set of twisted wires for the power tubes around the edge of the chassis to a power tube and then across about 7" to the other power tube. and another set of twisted pair down the center of the chassis to the 2 driver tubes which are in a line with the power tubes but between the 2 power tubes and 3" apart.
Anyone have any comments or suggestions i would appreciate the help. cheers.
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Old 21st January 2017, 08:56 AM   #2
JonSnell Electronic is offline JonSnell Electronic  United Kingdom
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If the wires are tightly twisted, to reduce stray inductance soured interference, then that should be fine.
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Old 21st January 2017, 10:32 AM   #3
DF96 is offline DF96  England
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Sounds OK to me. Always a good idea to keep output stage heaters (high currents) away from small-signal stages.
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Old 21st January 2017, 01:22 PM   #4
12E1 is offline 12E1  United Kingdom
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Quote:
Originally Posted by DF96 View Post
Sounds OK to me. Always a good idea to keep output stage heaters (high currents) away from small-signal stages.
Agreed - my daily use amplifier has a transformer with 5 heater windings. Two are used for rectifiers, two for left and right channel output tubes, and one for the input and phase-splitter stages for both channels. Keeping stuff separate works incredibly well (for the past 22 years, in fact).
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Old 21st January 2017, 04:50 PM   #5
DAK808 is offline DAK808  United States
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Wiring a multi filament transformer?
Default Thanks for the help.

Quote:
Originally Posted by JonSnell Electronic View Post
If the wires are tightly twisted, to reduce stray inductance soured interference, then that should be fine.
I will lay it out that way and report back later when everything is working. Cheers, 808
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