公开(公告)号：US20210233731A1

公开(公告)日：2021-07-29

申请号：US17053447

申请日：2019-05-09

Applicant: Freemelt AB

Inventor： Robin STEPHANSEN ,  Fredrik SELMOSSON

IPC: H01J29/70 ,  H03F3/04

Abstract: The present invention relates to a circuit arrangement comprising an analogue amplifier electrically connected to a first end of an inductive load. Further at least one electrical switch is electrically connected to a second end of the inductive load, where the electrical switch increases the rate of current change in the inductive load by applying an electrical voltage potential to the second end of the inductive load. The voltage at the second end can also be switched by a digital circuit at the second end for improved performance The inductive load may e.g. be a beam control coil, which may be provided for controlling an electron beam, e.g. in an electron gun.