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. 25, 2002
Filed:
Sep. 25, 2000
Roman Kruchowy, Somis, CA (US);
Ian Stewart, Ventura, CA (US);
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
A signal injecting apparatus which includes a microcontroller for generating a 1024 hertz square wave signal which is supplied through a NAND gate to a field effect transistor. When the transistor is switch on a tank circuit comprising a pair of capacitors and the primary of a signal injector coil starts oscillating and will continue to oscillate when the transistor is switch off. The power level for the signal to the cable is determined by an operator based on the operator inputs from depressing a pair of push button switches. The microcontroller, responsive to the operator inputs from the push button switches, outputs a digital word to a digital-to-analog converter that represents the required power level. The analog output signal from the digital-to-analog converter is supplied to a control loop circuit which adjust the power level by enabling and disabling the NAND gate.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile