Re: Opposed Twin Coil swap….TG and others…

[John]

Phil and Joe are both correct. Some lams are coated, many are not. Those that are not coated rely on a thin oxide layer to provide some resistance between lams. If these is no resistance, or if the material was not laminated, eddy current losses would reduce the efficiency of the coil. The eddy currents circulate perpendicular to the axis of the core, hence the effectiveness of laminating the core.