AVR for generator 1)Quality guaranteed,Competitive price 2)CE and ISO9001:2000 ... )SX460,SX440,MX321,MX341,R448,R449,YH-8A AVR for generator YH-8A is a half-wave phase-controlled thyristor type ... Automatic Voltage Regulator(AVR)and forms part of the excitation system for a brushless alternator, such as ...