| 摘要 |
An electrical apparatus and method for matching the input power source and output impedance of the electrical apparatus utilizes electromagnetic devices having two or more inductive windings, which may be connected in various series and/or parallel circuit configurations, by inserting them into a circuit board specially configured to accept my improved electromagnetic devices, and attaching jumpers to the circuit board for selecting the particular inductive windings to be incorporated into the electrical apparatus. The windings not selected for a given electromagnetic apparatus remain unconnected within the electromagnetic device.
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