The 3-phase sine signal generator circuit

Published:2011/6/20 22:39:00 Author:Seven | Keyword: 3-phase, sine signal | From:SeekIC

In the figure is the 3-phase sine signal generator circuit. This kind of circuit is widely used, such as controlling the voltage of the synchronized motor rotor. In the circuit, 2 dual-counters 4516(1)and 4516(2) with the low-pass filters MAX280(1) and MAX280(2) generate the phase-A and phase-B signals of sine waveform, and the signals are added together by A1 and then there generates an inverting phase signal of C. To reduce the distortion of the waveform, the counter outputs symmetric signals, and the phase different would better be 120°.



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