| http://www.w3.org/ns/prov#value | - The blind vias 116 reduce the amount of substrate material in the resonator PWB 102 between the PTC heater 114 and the resonator 108 thereby increasing the heat transfer characteristics of the resonator PWB. This allows for more efficient heat flow from the PTC heater to the resonator and other circuits on the upper surface of the resonator PWB thereby decreasing the amount of power required to be
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