Abstract System for the power control of high voltage electron beam generators having a cathode and a control electrode associated with the cathode. The system is provided with a high voltage isolation transformer with primary and secondary winding for supplying the control electrode with a control voltage. A system precedes the isolation transformer on the primary side and is adapted to generate square wave pulses susceptible of amplitude modulation. The pulse generator is designed such that the pulses are square wave impulses symmetrical with the null line. The isolation transformer is provided with a tertiary winding on the primary side and the primary winding receives input from an amplifier whose input is connected with the output voltage of the tertiary winding. A rectifier bridge is connected to the secondary winding.
System for the power control of high voltage electron beam generators comprising a directly heated cathode and a control electrode associated with the cathode, said system having high voltage isolation transformer means with primary and secondary winding for supplying the control electrode with a control voltage, means preceding the isolation transformer means on the primary side for the generation of square wave pulses symmetrical with the null line, means responsive to the comparison of the actual beam current and a reference value for amplitude modulating the square wave pulses, said isolation transformer means being provided with a tertiary winding on the primary side, said primary winding receiving input from the output of amplifier means having one input connected with the output voltage of the tertiary winding and another input receptive of the modulated square wave pulses and rectifier bridge means connected across the secondary winding.
Claim 2
Dependent Claim
145 words
System for the power control of high voltage electron beam generators comprising a directly heated cathode and a control electrode associated with the cathode, said system having high voltage isolation transformer means with primary and secondary winding for supplying the control electrode with a control voltage, means preceding the isolation transformer means on the primary side for the generation of square wave pulses symmetrical with the null line, means responsive to the comparison of the actual beam current and a reference value for amplitude modulating the square wave pulses, said isolation transformer means being provided with a tertiary winding on the primary side, said primary winding receiving input from the output of amplifier means having one input connected with the output voltage of the tertiary winding and another input receptive of the modulated square wave pulses and rectifier bridge means connected across the secondary winding.
Claim 3
Dependent Claim
23 words
System of claim 1 wherein an RC circuit of short time constant is disposed parallel to the output of the rectifier bridge means.