Reverse wound versus out of phase

[Zhangliqun]

Re: Reverse wound versus out of phase

That 5% is connected to hot at one end through the rest of the coil, thus it cannot shield. No part of a cover (or any kind of shielding) is connected to hot.

[uOpt]

Re: Reverse wound versus out of phase

That 5% is connected to hot at one end through the rest of the coil, thus it cannot shield. No part of a cover (or any kind of shielding) is connected to hot.

A cover is connected to the same ground that goes through the coil. Both of them are connected through that 95% rest of the coil.

[Zhangliqun]

Re: Reverse wound versus out of phase

But a cover is not connected to hot. If what you're saying was the case, then overwound coils would have less output instead of more because the outside turns (that 5%) would be more "outsider" than on a lower wound pickup, and there would be more of them to take more of the signal to ground. The coil is the DMZ through which neither "hotness" nor "groundness" can trespass. Hot and ground exist outside the coil, not in it.

But since you don't believe me there is a very simple test: Take a Strat pu or similar single coil and plug into the amp in an average to noisy electrical environment and listen. Then reverse the hot and ground leads and plug in again. See if you hear any difference. Until the results of this test are in, the explanation window is closed...

[uOpt]

Re: Reverse wound versus out of phase

But a cover is not connected to hot. If what you're saying was the case, then overwound coils would have less output instead of more because the outside turns (that 5%) would be more "outsider" than on a lower wound pickup, and there would be more of them to take more of the signal to ground. The coil is the DMZ through which neither "hotness" nor "groundness" can trespass. Hot and ground exist outside the coil, not in it.

But since you don't believe me there is a very simple test: Take a Strat pu or similar single coil and plug into the amp in an average to noisy electrical environment and listen. Then reverse the hot and ground leads and plug in again. See if you hear any difference. Until the results of this test are in, the explanation window is closed...

Done that long ago. That test is difficult since the noise picked up by an entirely unguarded single coil is highly variable.

In any case, just imagine that there is a tap at those 95% and the last 5%, the outer layer is grounded on both sides. Is it a shield then?

[Zhangliqun]

Re: Reverse wound versus out of phase

Done that long ago. That test is difficult since the noise picked up by an entirely unguarded single coil is highly variable.

The electrical environment won't change because you throw a phase switch. If you can't hear any difference, then at the very least for all practical purposes there is no difference, rendering this whole conversation academic.

In any case, just imagine that there is a tap at those 95% and the last 5%, the outer layer is grounded on both sides. Is it a shield then?

If you mean the last 5% is grounded at both ends then yes, because electronically the 5% is no longer part of the coil. It will shunt all noise and signal it receives to ground. But as with any shield close to the coil, you'll find the tone of the remaining 95% dulled a bit.

[uOpt]

Re: Reverse wound versus out of phase

If you mean the last 5% is grounded at both ends then yes, because electronically the 5% is no longer part of the coil. It will shunt all noise and signal it receives to ground. But as with any shield close to the coil, you'll find the tone of the remaining 95% dulled a bit.

True. If you tap and ground you'll definitely now get eddy currents. However, my original point is that even without the ground in the tap you still have the outer winds connected to ground (in one phase wiring variant).

I'll make another attempt this weekend. Not sure what the wife planned, hopefully there's some time.