Global Patent Index - EP 2296165 A1

EP 2296165 A1 20110316 - Dual element switched electron gun

Title (en)

Dual element switched electron gun

Title (de)

Zweiteilig geschaltete Elektronenkanone

Title (fr)

Canon à électrons commuté à élément double

Publication

EP 2296165 A1 20110316 (EN)

Application

EP 10176588 A 20100914

Priority

  • US 24230809 P 20090914
  • US 87397910 P 20100901

Abstract (en)

The invention provides an apparatus and method of switching more than one bias voltage within an electron beam tube in order to achieve electron beam cutoff. The invention is particularly useful for high-perveance electron tubes in which a large change in focus-electrode-to-cathode or anode-cathode voltage might otherwise be needed to achieve cutoff. In one embodiment of the invention, the cathode (208) and anode (210) bias voltages are both switched by magnitudes well within the capabilities of standard high-voltage switches to achieve beam cutoff.

IPC 8 full level

H01J 23/34 (2006.01); H01J 25/34 (2006.01)

CPC (source: EP)

H01J 23/34 (2013.01); H01J 25/34 (2013.01)

Citation (applicant)

None

Citation (search report)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

Designated extension state (EPC)

BA ME RS

DOCDB simple family (publication)

EP 2296165 A1 20110316

DOCDB simple family (application)

EP 10176588 A 20100914