heaters

gtrboy

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Join Date: Jul 2006

Posts: 41
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#1

heaters

09-01-2006, 07:38 PM

why dont PCB heater traces cause hum when they are straight but wire needs to be twisted?
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Steve Conner

Noodle of Reality

Join Date: May 2006

Posts: 7251

Location: Glasgow, Scotland
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#2

09-02-2006, 12:14 PM

Have you ever tried twisting PCB tracks? It's not easy. So designers have to just accept that heater traces on PCBs will radiate more magnetic field than twisted wires in a P2P amp do, and move sensitive stuff on the PCB further away if it turns out to be a problem in prototypes.

"Enzo, I see that you replied parasitic oscillations. Is that a hypothesis? Or is that your amazing metal band I should check out?"
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