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:
Aug. 08, 1995
Filed:
Feb. 02, 1994
Applicant:
Inventor:
Peter G Laws, Swindon, GB;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F / ;
U.S. Cl.
CPC ...
330252 ; 330310 ;
Abstract
In a differential amplifier having a pair of emitter follower outputs, power saving is obtained by switching the pull-down currents so that the emitter followers have to provide current to drive the load only in the on direction. The preceding stage is a cascode stage, so that the switching signals for switching the pull-down currents may be derived from the emitter circuits of the cascode stage output transistors.