U211B_电机调速专用芯片 U211B2/ B3 Phase Control Circuit - General Purpose Feedback Description The integrated circuit U211B2/ B3 is designed as a phase It has an integrated load limitation, tacho monitoring and control circuit in bipolar technology with an internal fre- soft-start functions, etc. to realize sophisticated motor quency-voltage converter. Furthermore, it has an internal control systems. control amplifier which means it can be used for speed- regulated motor applications. Features D Triggering pulse typ. 155 mA D Internal frequency-to-voltage converter D Voltage and current synchroniza……