• on Miscellaneous Electronics
  • Published in issue 7/2005 on page 0
About the article

Adjustable Duty Cycle

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Adjustable Duty Cycle
The circuit shown here can be used to convert a digital input signal having any desired duty cycle into a output signal having a duty cycle that can be adjusted between 10% and 80% in steps of 10%. The circuit is built around a 74HC4017 decade Johnson counter IC. Individual pulses appear on the ten outputs (Q0–Q9) of this IC at well-defined times, depending on the number of input pulses.
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