Field emision electron gun with controlled power supply

Details Field emision electron gun with controlled power supply Field emision electron gun with controlled power supply

1976-12-20

1978-05-16

Smith, Alfred E.

Electric lamp and discharge devices: systems

With cathode or cathode heater supply circuit

Automatic cut-out or voltage regulator in the cathode or...

315307, 315360, 250311, 328 9, G05F 100, H05B 3702

Patent

active

040901068

ABSTRACT:
A field emission electron gun according to this invention comprises a cathode for emitting electrons, an anode, a high voltage source which applies a high voltage between the cathode and the anode in order to cause emission of electrons from the cathode, a reference voltage source, voltage control means for controlling and stabilizing the output voltage of the high voltage source in response to an output voltage of the reference voltage source, means for detecting the value of an emission current from the cathode, means for delivering as an output a signal corresponding to the difference between the detected value and a desired value, and means for applying the output signal to the reference voltage source through a switch. The reference voltage source includes means which, when the switch is in the closed state, controls the output voltage of the reference voltage source in response to the difference output signal, and means which, when the switch is in the open state, continues to hold the output voltage value of the reference voltage source immediately before the opening of the switch as it is. The electron gun of this invention accordingly conducts when the switch is in the closed state, a constant current operation which makes constant the emission current from the cathode, and conducts when the switch is in the open state, a constant voltage operation which makes constant the voltage applied between the cathode and the anode.

REFERENCES:
patent: 3825839 (1974-07-01), Someya et al.

Affiliated with

Also associated with

Rating

Field emision electron gun with controlled power supply does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Field emision electron gun with controlled power supply, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Field emision electron gun with controlled power supply will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1199045