Hi Tom,
This is very interesting!!!
Could you pleas further explain this to us. This is the first time I hear about it.
RGDS
Pemo
Pemo,
Here are some links to similar explanations that I posted in the past, possibly with more details or better information:
http://www.diyaudio.com/forums/chip-amps/214085-one-more-lm3886-pcb-4.html#post3084015
http://www.diyaudio.com/forums/chip-amps/176410-odd-grounding-problem.html#post2351411
http://www.diyaudio.com/forums/tube...-noise-ground-due-power-tx-2.html#post2841838
Cheers,
Tom
Does that transformer introduce noise as compared to a toroid or R-core?
As seen in my pic, the twisted power supply wires are right next to the transformer.
The wide band amplifier output noise is only 430 uV RMS.
What is your speaker output sound level at 430 uV RMS?
Here is a sales pitch for Toroidal Transformers.
Toroidal Transformer - Toroidal Transformer Home
The superior design of a Toroidal Transformer results in a power source product which offers many advantages over other transformers utilizing standard, laminated, power. Several powerful advantages offered by a toroidal transformer include the following:
Low, stray, magnetic fields.
Quiet, efficient, operation.
Pemo,
Here are some links to similar explanations that I posted in the past, possibly with more details or better information:
http://www.diyaudio.com/forums/chip-amps/214085-one-more-lm3886-pcb-4.html#post3084015
http://www.diyaudio.com/forums/chip-amps/176410-odd-grounding-problem.html#post2351411
http://www.diyaudio.com/forums/tube...-noise-ground-due-power-tx-2.html#post2841838
Cheers,
Tom
Thanks Tom, I´ll be reading.
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