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    • 6. 发明授权
    • Vacuum fluorescent display filament drive circuit
    • 真空荧光显示灯丝驱动电路
    • US5952788A
    • 1999-09-14
    • US617173
    • 1996-03-18
    • Donald W. GrahamStephen S. Otzman
    • Donald W. GrahamStephen S. Otzman
    • H05B37/02
    • G09G3/22G09G2320/0209G09G2330/021G09G2330/028
    • A drive circuit for controlling a vacuum fluorescent display is provided. A charge storage device is connected between signal ground or a voltage supply and a display element. One multiway switch or two single-position switches are connected to the display element opposite the charge storage device. In either configuration, the switch or switches are controlled by an oscillator which, by toggling the switch or switches, alternates the configuration of the circuit to charge or discharge the charge storage device through the display element. The charge storage device and the display element may be connected to a regulated voltage which is maintained at a potential above the grid voltage to reduce cross-talk in the display. The switching operation is break before make and produces an AC voltage across the display element.
    • 提供一种用于控制真空荧光显示器的驱动电路。 电荷存储装置连接在信号地或电压源与显示元件之间。 一个多路开关或两个单位开关连接到与电荷存储装置相对的显示元件。 在任一配置中,开关或开关由振荡器控制,振荡器通过切换开关或开关来交替电路的配置以通过显示元件对电荷存储装置进行充电或放电。 电荷存储装置和显示元件可以连接到保持在电网电压以上的电压的调节电压,以减少显示器中的串扰。 切换操作在make之前断开,并在显示元件上产生交流电压。