Hi all, ive used pwm in its most basic forms a few times and have a basic understanding but im wondering were its useable limits and inefficencies are? for instance how well does it work with bit voltage differences and were does the line come between pwm and smps?
This has come as a friend would like to run a high current 24v motor and queried wether it could be run using pwm from rectified mains. The is custom built and insulation is has safe working voltage of 700v according to the motor house so it would be ok with the peak voltage.
can anyone help me with the logistics side of the switching i.e would the mosfet on off times limit the output voltage at all but the lowest of frequencies?
Thanks for helping on such a vague and varied question
Harry
This has come as a friend would like to run a high current 24v motor and queried wether it could be run using pwm from rectified mains. The is custom built and insulation is has safe working voltage of 700v according to the motor house so it would be ok with the peak voltage.
can anyone help me with the logistics side of the switching i.e would the mosfet on off times limit the output voltage at all but the lowest of frequencies?
Thanks for helping on such a vague and varied question
Harry