The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 17, 1988
Filed:
Nov. 17, 1986
Applicant:
Inventor:
Ludwig Wanninger, Neubiberg, DE;
Assignee:
Siemens Aktiengesellschaft, Berlin and Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F / ;
U.S. Cl.
CPC ...
330 43 ; 3302 / ;
Abstract
A circuit arrangement protects against thermal overload as a consequence of impermissible operating conditions in traveling wave tube amplifiers having multi-collector traveling wave tubes. At least one measuring device is provided for measuring the collector current at at least one collector of the traveling wave tube and, in response to measuring a prescribed current threshold, the cathode current of the traveling wave tube is regulated back by way of a control device or is disconnected by way of a control logic circuit.