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. 27, 1976
Filed:
Aug. 09, 1974
Applicant:
Inventor:
Paul Robert Schroeder, Wescosville, PA (US);
Assignee:
Bell Telephone Laboratories, Incorporated, Murray Hill, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03F / ;
U.S. Cl.
CPC ...
330 / ; 330 22 ; 330 69 ;
Abstract
A relatively high sensitivity and high speed current detector consists of essentially a common base differential amplifier consistng of two junction transistors, each having separate emitter and collector resistors, and a constant current source connected to the collector resistors. Separate input terminals connected to the emitters allow complementary information current signals or an information current signal and a reference current signal to be applied to the emitter terminals. The output signal and the complement thereof appear at their respective collectors.