HDR Electromagnet

OK most copper wire has many impurities, but for an HDR it is necessary for the copper wire to be pure. Having other metals can cause the harmonics to mess up. This is bad for the HDR electromagnet with need to use pure copper.

Cadmium free electrolyte copper that is believed to be one of the purest forms of copper wire. Do not buy cheap magnet wire. It has stuff added as a hardener in the alloy and that will cause harmonics to screw up. Get the high quality type that is pure. This is what you use in an HDR electromagnet.