• on Miscellaneous Electronics
  • Published in issue 12/2012 on page 64
About the article

PWM to phase shifter

Design Tip

PWM to phase shifter

In some situations it can be useful to vary the phase between two square waves. Here, two D-flipflops ‘A’ and ‘B’ convert the PWM signal into a square wave in the standard manner. However, D-flipflop 'A' is clocked by the rising edge of a pulsewidth modulated (PWM) signal, whereas D-flip flop 'B' is clocked by the falling edge.

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