| 摘要 |
<p>The circuit comprises: at least one electronic switch (Q; Qi) which is operatively connected to an inductive load (W; Wi), is intended to be driven by means of an on-off signal (PWM) and, in an enabled condition, can connect the load (W; Wi) to a direct-current voltage supply (B), at least one freewheeling circuit branch (FB; FBi) which comprises a diode (D; Di) and can recirculate the transient current which flows through the load (W; Wi) each time the switch (Q; Qi) is disabled, and a filtering circuit (FC) connected between the diode (D; Di) and the voltage supply (B) and comprising a parallel capacitor (C) connected to the diode (D; Di) and a series inductor (LF) connected between the diode (D; Di) and the voltage supply (B). The freewheeling circuit branch (FB, FBi) and the filtering circuit (FC) are connected substantially in series with one another in a circuit branch which is operatively connected in parallel with the load (W; Wi). <IMAGE></p> |
