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. 25, 1989
Filed:
Mar. 08, 1988
John F DePauli, San Diego, CA (US);
Westek Associates, San Diego, CA (US);
Abstract
A high gain bandpass amplifier for amplifying low frequency, low level signals ouptut from ceramic infrared sensors. The amplifier includes an input capacitor having a pair of terminals with one of the terminals for receiving the infrared sensor output signal. A first MOS operational amplifier having inverting and noninverting inputs and an output, has its inverting input connected to the other terminal of the input capacitor. A first feedback network is coupled between the first amplifier inverting input and output. A resistor having a pair of terminals has one terminal connected to the first amplifier output. A second MOS operational amplifier also having inverting and noninverting inputs and an output has its inverting input connected to the other terminal of the resistor. The noninverting inputs of the first and second amplifiers are connected together and receive the reference voltage. A second feedback network is coupled between the second amplifier inverting input and output. An output capacitor having a pair of terminals has one terminal connected to the output of the second amplifier. The amplified sensor output signal is coupled out of the amplifier at the other terminal of the output capacitor.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile