B&K Precision 1653A AC Power Supply, 150V, 2A Power supply unit provides a source of AC voltage and current for powering and testing electronic devices in research, medical, laboratory, production, and educational applications One output supplies continuously variable voltage or current Built-in isolation transformer reduces risk of shock when working with hot-chassis equipment Digital meter shows output voltage and current readings Input fuse helps prevent damage to the PSU or connected equipment due to overload