| 摘要 |
A multiphase circuit for driving the cathodes of a gas cell display device utilizing transistor drivers for sequentially driving each phase and switching circuitry cooperating with the drivers for de-energizing the previously "on" cathodes and rapidly shutting off the previously operating driver. The cells energized by an "on" cathode are caused to glow when there is a concurrent signal on the proper anode. The output of each driver is coupled to a switching transistor which, when caused to conduct, feeds a standoff voltage to a preceding phase and the collector of the driver associated with that phase, rapidly restoring the phase to a voltage level below the ionization point of the gas cells. A resistor across the emitter and base of the switching transistor maintains a proper bias and a diode across its collector and emitter protects the switching transistor from surges at shutdown.
|
