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5 Reported Problems With Harbor Freight's Predator 3500 Generator

The Predator 3500 from Harbor Freight is a popular and highly rated generator, but just like any product, a few users have reported problems with it.
IEEE

Design and Implementation of a Dynamic Test Kit for AVR Parameter Estimation of a Synchronous Generator at Sapugaskanda Power Station

Abstract: The Automatic Voltage Regulator (AVR) is an essential device for maintaining the stability of the terminal voltage and regulating the reactive power output in synchronous generators.