Anyone use foil tape for shielding in an amp?

[Seemoore]

Like covering the heater wires or for lead dress?

[glasman]

Interesting concept.

TR in their early amps used an interesting shield made by wrapping a solid core wire around the signal wire grounding it on the low impedance end. I guess you could do the same thing with heater wires.

But in practice, I have never found a need to do so on heaters (especially if you have enough standoff for the heater wires.

Now on a PCB (like my MatchBox), I used DC heaters, just to make sure .

Gary

[Seemoore]

Yea, I built an 18watt from GuitaramplifierPCBs that suggested the same thing, wrap a wire with solid core, seems to work.

[glasman]

Yea, I built an 18watt from GuitaramplifierPCBs that suggested the same thing, wrap a wire with solid core, seems to work.

As long as you don't ground both end of the wrap .