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:
Mar. 14, 1995
Filed:
Oct. 28, 1992
Jack Craft, Bridgewater, NJ (US);
Samsung Electronics Co., Ltd., Kyungki, KR;
Abstract
A clipper includes an amplifier having a non-inverting input node, an inverting input node, and an output node. A feedback transistor has its base connected to the amplifier output node and its emitter connected to the inverting input node for providing unilaterally conductive degenerative current feedback between the output node and the inverting input node. A resistor is connected between the inverting input node and an input terminal for conducting a current supplied via the collector-to-emitter path of the feedback transistor which is proportional to the amplitude of an unclipped portion of the signal applied between the input terminal and the non-inverting input node. When a reference potential is applied to the non-inverting input node and an AC input signal varying about the reference potential is applied to the input terminal, the stage functions as a negative half-wave rectifier. When the reference potential is applied to the input terminal and the AC input signal is applied to the non-inverting input node, the stage functions as a positive half-wave rectifier. Two rectifying stages can be interconnected with the collectors of the feedback transistors connected in common to form a full-wave rectifier. The output of the full-wave rectifier can be used to control the gain of an amplifying means producing the AC signal being detected.