Patent attributes
A pulsed electromagnetic field therapy device has a parallel resonant circuit comprising a capacitor connected in parallel with an inductor without a switch between the capacitor and the inductor in the parallel resonant circuit. The parallel resonant circuit is configured to generate a pulsed electromagnetic field in the inductor while electrical energy is stored in the parallel resonant circuit, and the inductor is configured to be placed relative to a part of a body to provide the pulsed electromagnetic field to the part of the body. The device also has a power source. A switch, external to the parallel resonant circuit, selectively connects the parallel resonant circuit to the power source for a current ramping period, and during the current ramping period a current in the inductor is increased to reach a desired current.
