hey guyz..,hope ur doing good.....am an electrical student...well i was wondering about automatic fan regulator...as we knew speed of fan can be controlled using regulator either with 4 steps or 5 steps whatever it is....my question is...whether its possible to control the speed of fan without using regulator..but by using simple analog display say, if we enter certain value for ex: voltage 0.5mA for first step 0.6mA for second step..etc..,so if it is possible please guide me to move further........