Electron gun driver
AssigneeVarex Imaging Corporation
InventorJohn Turner
Life of this patent
Estimating the term…
Abstract
Technology is described for an electron gun driver including a half bridge driver circuit and a drive controller. The half bridge driver circuit includes a drive circuit configured to generate a grid drive voltage for a grid connection of an electron gun, and a cutoff circuit configured to generate a grid cutoff voltage for the grid connection of the electron gun, and a gate driver configured to switch between the grid drive voltage and the grid cutoff voltage. The drive controller is configured to generate a pulse input to the drive circuit and cutoff circuit and grid switching signals for the gate driver.
Claims19
An electron gun driver, comprising:
- a half bridge driver circuit, comprising:
- a drive circuit configured to generate a grid drive voltage for a grid connection of an electron gun, the drive circuit including:
- a drive high voltage power amplifier configured to provide the grid drive voltage for the half bridge driver circuit,
- a drive high-speed digital to analog converter (DAC) configured to generate a programming voltage to the drive high voltage power amplifier, and
- a drive power switch configured to apply the grid drive voltage to the grid connection;
- and
- a cutoff circuit configured to generate a grid cutoff voltage for the grid connection of the electron gun;
- and
- a gate driver configured to switch between the grid drive voltage and the grid cutoff voltage;
- and
- a drive controller configured to generate a pulse input to the drive circuit and cutoff circuit and grid switching signals for the gate driver.
A method for controlling an electron gun driver, the method comprising:
- setting a grid drive voltage on a drive high voltage power amplifier for a grid connection of an electron gun, including:
- generating a programming voltage with a drive high-speed digital to analog converter (DAC);
- and
- amplifying the programming voltage with the drive high voltage power amplifier configured to generate the grid drive voltage;
- setting a grid cutoff voltage on a cutoff high voltage power amplifier for the grid connection of the electron gun;
- and
- switching between the grid drive voltage and the grid cutoff voltage to generate a pulse on the grid connection.
An electron gun driver, comprising:
- a grid voltage generation means for generating a grid drive voltage and a grid cutoff voltage for a grid connection of an electron gun;
- a switching means for generating a pulse on the grid connection by switching between the grid drive voltage and the grid cutoff voltage;
- and
- a voltage controlling means for generating inputs to the grid voltage generation means and the switching means
- wherein the grid voltage generation means includes:
- a conversion means for converting the inputs to the grid voltage generation means to an analog input from a digital output of the voltage controlling means;
- and
- amplifying means for generating the grid drive voltage in response to the analog input.
Dependencies are inferred from the claim text.