| 摘要 |
A circuit arrangement ( 1 ) for generating motor characteristic curves, in particular for stabilizing the pull-out torque of a two-phase synchronous motor ( 2 ) by using a series-connected element ( 14 ). The series-connected element ( 14 ) is connected between a first line conductor ( 12.1 ) formed as a neutral conductor and the common phase ( 11 ) of the synchronous motor ( 2 ), and a second line conductor ( 12.2 ) implemented as a conductor is connected with a phase of the synchronous motor ( 2 ). A transistor-diode combination ( 3 ) is employed as a voltage-controllable series-connected element ( 14 ), whereby for obtaining an approximately constant sinusoidal AC voltage amplitude and/or AC current amplitude through the synchronous motor ( 2 ), the transistor ( 4 ) designed for the maximum peak voltage of the oscillating line voltage and having an operating point controllable by an analog control signal is a non-switched bipolar transistor or field effect transistor (FET), and the diodes ( 6 ) are implemented as a rectifier bridge ( 5 ).
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