In this article several operation modes of the 555 timer applied to the pulseModulation (PM) and their corresponding operation characteristics are expounded.
本文阐述了555时基电路用于脉冲调制(PM)的几种工作模式及其相应的工作特点。
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The torque ripple caused by diode freewheeling of the inactive phase during non-commutation state of PM brushless DC motor(BLDCM)when using the PWM_ON type of pulse width modulation was analyzed.
The design method for hybrid waveforms utilizing ran-dom poly-cell code pulse position modulation (PPM) and pulse-to-pulse binary sequences phase modulation (PM) is introduced in this paper.