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Jan 26, 2016 at 13:56 comment added Apastrix @Andyaka The frequency on the PWM signal should be fixed, only the duty cycle is variable, i want the duty cycle to vary with the varying frequency so that i can drive a dc motor.
Jan 26, 2016 at 13:51 comment added Andy aka At what target PWM frequency (the same as the input frequency or fixed at some other value)?
Jan 26, 2016 at 13:17 answer added user3247895 timeline score: 2
Jan 26, 2016 at 12:47 comment added Apastrix @Andyaka No it's not logarithmic, i want it to be proportional, so varying frequencies will produce varying duty cycles.
Jan 26, 2016 at 12:45 comment added Apastrix @ElectronS I know that 555 timer can output a PWM signal, but i need a way to convert the clock signal i have to maybe some voltage level and then feed it to the timer.
Jan 26, 2016 at 10:00 comment added Andy aka Is this linear with frequency or logarithmic with frequency? At the midpoint frequency (say 100 Hz) are you wanting your 100 Hz input clock to be exactly a 100 Hz 50% duty output clock i.e. no change or are you wanting your input frequency only to set the duty cycle of some arbitrary frequency that is not connected? Is your input duty cycle 50% or might this vary?
Jan 26, 2016 at 9:56 comment added ElectronS Have you taken a look in 555 timer circuit that generates pwm signal . Also you may need a closed loop controller and dc motor with encoder to replace the stepper motor functionalty exactly.
Jan 26, 2016 at 9:38 history asked Apastrix CC BY-SA 3.0