X-ray electron emission control device

2 The X-ray electron emission control device of claim 1,

• wherein the cathode current source outputs a cathode current, which is a combination of the gate current and the anode current, to a branch point of a line connecting between the cathode current source and the current detection part.

3 The X-ray electron emission control device of claim 2,

• wherein the gate voltage source is connected to a first branch line branched from the branch point of the line, and
• wherein the current detection part is connected to a second branch line branched from the branch point of the line.

4 The X-ray electron emission control device of claim 3,

• wherein the gate voltage source receives the gate current branched through the first branch line among the cathode current output from the cathode current source, and
• wherein the current detection part receives the anode current branched through the second branch line among the cathode current output from the cathode current source.

5 The X-ray electron emission control device of claim 4,

• wherein the gate voltage source includes a gate negative terminal connected to the first branch line and a gate positive terminal connected to the gate line of the electron emission part, and
• wherein the gate current amount supplied to the gate of the electron emission part through the gate line connected to the gate positive terminal is the same as the gate current amount input through the first branch line connected to the gate negative terminal.

6 The X-ray electron emission control device of claim 1,

• wherein the current detection part receives the anode current from a branch point of a line connecting between the cathode current source and the current detection part and outputs a voltage proportional thereto to the current control part.

7 The X-ray electron emission control device of claim 6,

• wherein the voltage output from the current detection part has a voltage value calculated by a formula consisting of VS=ZSIA (where VS is the output voltage of the current detection part, ZS is the proportional constant of the current detection part, and IA is the anode current).

9 The X-ray electron emission control device of claim 8,

• wherein the current control part generates a current control signal in which the anode current is controlled by a formula consisting of IA=Vref/αZS, Vref=αVS, VS=ZSIA (wherein, VS is the output voltage of the current detection part, ZS is the proportional constant of the current detection part, IA is the anode current, Vref is the reference voltage, and αVS is the output voltage of the current detection part).

12 The X-ray electron emission control device of claim 11,

• wherein the gates of the plurality of electron-emission parts are connected in series with each other, and
• wherein the plurality of anodes are connected in series with each other.

13 The X-ray electron emission control device of claim 11,

• wherein the plurality of cathode current sources are connected in parallel with each other and connected to the current detection part.

14 The X-ray electron emission control device of claim 11,

• wherein the current control part generates a current control signal including a first control signal for individually turning on/off the cathode current source and a second signal for individually controlling the current value of the cathode current source.

15 The X-ray electron emission control device of claim 11,

• wherein the current control part is individually connected to each of the plurality of cathode current sources and individually outputs the current control signal to each cathode current source.