| 摘要 |
An induction coil for use with a control device comprises a series of independent windings (12, 13, 14) about a common axis (x - x) having a first winding (12) which produces an output signal and a second winding which produces a second output signal greater in strength than the output signal of the first winding. The difference in output signal of the windings (12, 14) may be achieved by either varying the number of turns of conductive material on the winding or varying the input signal to the windings. A combination of there alternatives may also be used. The induction coil may then be used in a control device which in turn may form part of a control system. |
