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:
Jun. 09, 1992
Filed:
Nov. 29, 1990
Paul C Talmadge, Ansonia, CT (US);
Other;
Abstract
A circuit for modulating or demodulating an input potential includes a first operational amplifier for receiving the input potential and a second operational amplifier for outputting an output potential. A resistor network is connected to the operational amplifiers. A switch with a first position and a second position is connected to the resistor network and to at least one of the operational amplifiers. The circuit also includes a mechanism for repeatedly driving the switch between its first position and its second position. When the switch is in its first position, the output potential equals the input potential. When the switch is in its second position, the output potential equals minus one times the input potential.