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AC Power Automatic Voltage Regulators Stamford Alternator avr SX450 for Diesel Genset Stamford alternator avr SX450 ac power generator for diesel genset , automatic voltage Regulators SX450 is a half-wave phase-controlled thyristor type Automatic Voltage Regulator and forms part of the excitation system for a brushless generator. The Propose employs surface mount technology (SMT) for high integration of features in a minute footprint AVR. Positive voltage build up from