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    • 3. 发明授权
    • Virtual voltage power supply
    • 虚拟电压电源
    • US6011423A
    • 2000-01-04
    • US862896
    • 1997-05-23
    • Arnold E. BaizleyAnthony R. BonaccioCharles J. MasenasSteven J. Tanghe
    • Arnold E. BaizleyAnthony R. BonaccioCharles J. MasenasSteven J. Tanghe
    • H03K17/0416H03K19/013H03K17/56
    • H03K19/013H03K17/04166
    • A voltage boosting circuit for an "H-driver," providing for each "pull-up" switch in the H-driver a switching shunt that charges a capacitor from a supply voltage when the "pull-up" switch is open and couples the capacitor directly to the write head when the "pull-up" switch is closed. The side of the capacitor which is not directly coupled to the write head is coupled to the data signal (or its inverse, in the case of the capacitor for the otherwise identical circuit serving the parallel half of the "H-driver") through a buffer which sets the voltage at the signal level (or its inverse), thereby dumping the charge to the write head and elevating the voltage of the write head significantly above the supply voltage. The identical circuit serving the parallel half of the "H-driver" similarly boosts the negative going transition voltage.
    • 用于“H驱动器”的升压电路为H驱动器中的每个“上拉”开关提供一个开关分流器,当“上拉”开关断开时,电源从电源电压充电,并将 当“上拉”开关闭合时,电容器直接连接到写入头。 不直接耦合到写头的电容器的一侧耦合到数据信号(或者在与“H驱动器”的平行半部分相同的电路的电容器的情况下,其反相)通过 缓冲器将电压设置在信号电平(或其反相),从而将电荷转移到写入头,并将写入头的电压显着地高于电源电压。 用于“H驱动器”的并行半部分的相同电路同样提高了负向转变电压。