Wave generation circuit for an inverter.

摘要

@ A wave generation circuit for a pulse width modulation inverter for generating a plurality of differently phased waves which are modulated to form driving signals for switching elements in the inverter, has a single memory element 24 stored with waveform data and an operation circuit 22 for providing phase address signals which indicate the address of waveform data corresponding to each phase. The data at the indicated addresses are read out of the memory element and latched by a phase latch circuit 26, 28, 30 for each phase. When all of the stored data corresponding to each phase have been latched, the operation circuit 22 transmits an output timing signals to cause the phase latch circuits to simultaneuously provide as outputs the latched data which form driving signals for the switching elements.