| 摘要 |
PURPOSE: A device for controlling an inductive charge is provided, which enables a quick open transistor to be controlled over a wide range of supply voltage at a voltage floating for the voltage of coil terminal. CONSTITUTION: The device for controlling an inductive charge, particularly, of an electromagnetic coil, comprises a chopper switch in series with the coil and governed by a pulse width modulator, and an opening switch which is also mounted in series with the coil. A transformer converter (20) has two secondary windings, of which one is connected to a modulator (11) and the other one is connected to the grid of the opening transistor (T2) via a switch (25) biased by the opening signal.
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