alexmcsheffrey
New Member
:? im trying to build a circuit that can convert 100rpm to 600rpm (taken of a rollera)into 0 to 10 volts dc this will be used to set the reference signal for a vfd, this in turn will drive another roller yhis second roller will also produce a 0 to 10 voltage to be compared to the original to see if both are same speed. going to use a frequency producing sensor and frequency to voltage converters but unsure how to produce error voltage if rollers are at different speeds.