| 摘要 |
<p>PCT No. PCT/FR97/00733 Sec. 371 Date Oct. 23, 1998 Sec. 102(e) Date Oct. 23, 1998 PCT Filed Dec. 22, 1998 PCT Pub. No. WO97/40509 PCT Pub. Date Oct. 30, 1997Apparatus for controlling an inductive load, particularly for a coil of an electromagnet, including an electronic chopper switch fitted in series with the coil and controlled by a pulse width modulator, and an opening switch, also fitted in series with the coil. A transformer converter 20 with two secondary windings, one of which is connected to the modulator 11, and the other is connected to the gate of the opening transistor T2 via a switch 25 solicited by the opening signal.</p> |
