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. 17, 2001
Filed:
Dec. 11, 1998
Daniel Liu, Hsien Tien, TW;
Other;
Abstract
A circuit arrangement for simulating an alternating current load. The simulating circuit includes a current waveform generating circuit capable of generating a phase control signal with a phase angle coherent, lagged, or leading to that of the alternating current power source voltage. A voltage and current phase control circuit generates a first and second switching control signals according to the phase control signal generated by the current waveform generating circuit and a series of counting pulses generated by a voltage zero-crossing detecting circuit. The switching control signals are used to control a switch circuit so as to generate a power source current with a phase angle coherent, lagged, or leading to the phase angle of the power source voltage.