| 摘要 |
PCT No. PCT/AT82/00018 Sec. 371 Date Jun. 24, 1983 Sec. 102(e) Date Jun. 24, 1983 PCT Filed Jun. 7, 1982 PCT Pub. No. WO83/01713 PCT Pub. Date May 11, 1983.A parametric electric machine consists of a series resonant circuit, which has a capacitance (C) which is adapted to be mechanically varied, an inductance (L) and a resistance (R). The no-load values of the capacitance (Co), inductance (Lo) and resistance (Ro) fulfill the threshold condition <IMAGE> and at least one of the parameters L, R and C of the resonant circuit is a function of the current flowing in the resonant circuit.
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