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:
Apr. 25, 1995
Filed:
Oct. 28, 1992
Thomas S Osterman, Bainbridge Island, WA (US);
Alpha Technologies, Bellingham, WA (US);
Abstract
A cable TV distribution system in which an AC power signal is generated according to the following steps: (a) generating an AC power signal having at least a positive half-cycle, where the positive half-cycle comprises a rising portion, a falling portion, and a central portion; and (b) limiting the slew rate of the AC power signal within the rising portion to a range of 30 V/ms and 50 V/ms inclusive. Preferably, the slew rate of the AC power signal within the falling portion is limited to the range of -30 V/ms and -50 V/ms inclusive. The AC power signal is preferably generated by a power supply comprising: (a) circuit that generates a first drive signal having a first portion comprising a series of pulses, a second portion comprising a series of pulses, and a third portion comprising a single pulse; (b) a drive circuit that generates a pulsed power signal the timing of which corresponds to the timing of the first drive signal; (c) a transformer; and (d) an output capacitor for integrating the output of the drive circuit.