| 摘要 |
What is described is a circuit arrangement for the pulse width modulated drive of a load (L) connected to a voltage supply line (SL), including:
- a voltage control/switch device (LS) interposed between the supply line (SL) and the load (L), and adapted to be controlled as to their conduction according to a predetermined duty cycle;
- a capacitive filter (C), placed downstream of the said voltage control/switch means (LS), in parallel with the load (L), and
a controlled current sink (S), connected to the capacitive filter (C), and adapted to operate as a sink of the current created by the discharge of the energy stored by the capacitive filter (C), which is switched to an activated state when the voltage control/switch device (LS) is non-conducting and is switched to an inactive state when the voltage control/switch device (LS) is conducting. |
