CIRCUIT ARRANGEMENT FOR SIMULATING ALTERNATING CURRENT LOAD BACKGROUND OF THE INVENTION 1. Field of the Invention

Content Provider	Semantic Scholar
Copyright Year	2017
Abstract	(*) Notice: Subject to any disclaimer, the term of this (57) ABSTRACT patent is extended or adjusted under 35 A circuit t for simulati lternati t U.S.C. 154(b) by 0 days. circuit arrangement Ior simulating an alternaung curren load. The Simulating circuit includes a current waveform generating circuit capable of generating a phase control (21) Appl. No.: 09/209,011 Signal with a phase angle coherent, lagged, or leading to that (22) Filed: Dec. 11, 1998 of the alternating current power Source Voltage. A voltage 7 and current phase control circuit generates a first and Second (51) Int. Cl." ..................................................... GO1R 31/36 Switching control Signals according to the phase control (52) U.S. Cl. ........................... 324/771; 263/132; 323/237 Signal generated by the current waveform generating circuit (58) Field of Search ............................. 324/771; 323/337, and a Series of counting pulses generated by a Voltage 323/211, 237; 363/132 Zero-crossing detecting circuit. The Switching control Sig nals are used to control a Switch circuit So as to generate a (56) References Cited power Source current with a phase angle coherent, lagged, or U.S. PATENT DOCUMENTS leading to the phase angle of the power Source Voltage.
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