Patent ID: 6046613
Filing Date: 2000-04-04
Classification: H01L,H03K

Abstract:
A capacitive-load driving circuit for repeatedly charging and discharging a capacitive load according to an input signal, comprising:a first switching element which is in a first charging path for use in electrical charging from a power supply to the capacitive load;a second switching element which is in a second charging path for use in electrical charging from capacitors to the capacitive load;a third switching element which is in a first discharging path for use in electrical discharging from the capacitive load to ground;a fourth switching element which is in a second discharging path for use in electrical discharging from the capacitive load to the capacitors; anda control circuit for holding the third and fourth switching elements ""off"" when charging the capacitive load and sequentially switching the second switching element and then the first switching element ""on"" and for holding the first and second switching elements ""off"" when discharging the capacitive load and sequentially switching the fourth switching element and then the third switching element ""on"".