| 摘要 |
PURPOSE: A device for conditioning control signal to electron emitter, preferably so that collected electron current varies linearly with input control is provided to control a collector current (ICP) form with electrons emitted from an emitter (EP) of an emission/collection to vary in a desired, typically linear by employing a relatively simple analog control loop for an electron current and an input control voltage. CONSTITUTION: A voltage-adjustment section(20) of an electronic device converts an input control voltage(V1) into an output control voltage(V0) in such a way that a collector current(ICP) form with electrons emitted from an emitter(EP) of an emission/collection cell (26), or triode, varies in a desired, typically linear, manner with the input control voltage. The triode further includes a collector (CP) that carries the collector current and a gate electrode(GP) that regulates the collector current as a function of the output control voltage. Control of the collector current so as to achieve the desired current/voltage relationship is achieved with an analog control loop containing the triode and an amplifier(28) coupled between the triode's collector and gate electrode. The triode thus typically has a linear gamma characteristic relative to the input control voltage. The voltage-adjustment section is suitable for use in a display device such as a flat-panel display.
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