| 摘要 |
The invention pertains to a method of charging or discharging a capacitive element, preferably a piezoelectric crystal. The invention pertains also to a device which implements charging of a capacitive element according to said method. The device comprises a bipolar buck-boost converter, whereby a capacitive element can be charged with both positive and negative voltages. The discharge of the capacitive element is provided with energy recovery and feedback to the device's power supply. |
