I have been researching fan control in an effort to understand how voltage linear ramped circuits are used to increase/decrease the speed of a fan however, despite reading many articles, I seem disconnected or rather confused.
So, a fan has settings ( e.g off, low, med, high) that allows the user to change the speed of the fan. Whenever a user selects a particular setting does the control circuit ramp to particular voltage then levels off to keep it running at that speed. What if the person selects the highest speed right after, does the ramp further increase to higher voltage and levels off ?? What would the waveform look like for that particular action ? Would it look like a linear line that levels off after it reaches a peak and the increases linearly again and then levels off again?
What does the commanded signal ( input signal) that allows the voltage to ramp look like ?
Does the rate of ramp affect the speed of the fan ?? Is the rate of the ramped voltage different everytime the user selects a different speed setting?
I would def. be grateful if someone could assist me.Thanks!!!!!!!
So, a fan has settings ( e.g off, low, med, high) that allows the user to change the speed of the fan. Whenever a user selects a particular setting does the control circuit ramp to particular voltage then levels off to keep it running at that speed. What if the person selects the highest speed right after, does the ramp further increase to higher voltage and levels off ?? What would the waveform look like for that particular action ? Would it look like a linear line that levels off after it reaches a peak and the increases linearly again and then levels off again?
What does the commanded signal ( input signal) that allows the voltage to ramp look like ?
Does the rate of ramp affect the speed of the fan ?? Is the rate of the ramped voltage different everytime the user selects a different speed setting?
I would def. be grateful if someone could assist me.Thanks!!!!!!!