| 摘要 |
The device for finding the pole sequence of direct current or alternating current machines and for measuring the magnetic induction of poles of direct current machines, which contains a hallotron supplied with direct current, whereas the hallotron output voltage is amplified by an amplifier (W), characterised in that the amplifier (W) output is connected to the common point of concentric coils (L1, L2) which are wound in opposite directions, with coils' outputs connected to the supply circuit (-U, +U), whereas the hallotron (HN) is located in the coils' axis, and the meter (M) with zero in the middle of the scale, is connected to the output of the amplifier (W).<IMAGE>
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