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:
Jul. 29, 2014
Filed:
Jul. 16, 2007
Applicants:
Martin Peschke, Munich, DE;
Alexander Schild, Feldkirchen, DE;
Inventors:
Martin Peschke, Munich, DE;
Alexander Schild, Feldkirchen, DE;
Assignee:
Rohde & Schwarz GmbH & Co. KG, Munich, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 13/20 (2006.01); G01R 13/22 (2006.01); G01R 13/34 (2006.01); G01R 1/067 (2006.01); G01R 1/06 (2006.01); G01R 31/02 (2006.01);
U.S. Cl.
CPC ...
G01R 13/20 (2013.01); G01R 13/22 (2013.01); G01R 13/34 (2013.01); G01R 1/067 (2013.01); G01R 1/06 (2013.01); G01R 31/02 (2013.01);
Abstract
Disclosed is a probe for an oscilloscope comprising a multi-stage transistor amplifier that acts as an impedance transformer. Said amplifier is a d.c.-coupled emitter follower circuit that is composed of bipolar transistors or a d.c.-coupled source follower circuit which is composed of field effect transistors and the successive amplifier elements of which are dimensioned and tuned to each other in such a way that the resulting offset direct voltage between the input and the output is minimal.