| 摘要 |
A drive circuit (13) for use with a capacitive load (10) includes two transistors (18, 20) controlled by a drive voltage (22) and connected to the load (10) through an inductor (14). A supply voltage (16) is alternately connected and disconnected to the circuit (13) to achieve a resonant transfer of energy from the supply voltage (16). Energy stored in the load (10) is transferred to the inductor (14) and then back to the load (10), thereby reversing and augmenting the output voltage across the load (10) and providing an instantaneous output voltage many times the supply voltage. Diodes (24, 26) ensure that the current flows in the proper polarity through the transistors (18, 20). The output voltage across the load (10) is controlled by energy limiting means (30 - 44). <IMAGE> |
