Profile: Osborne Transformer Corp. specializes in the design and manufacture of custom transformers, inductors, & other specialty electromagnetic components. We are an ISO 9000:2001 certified company. Our products are used in a wide range of industrial applications. Our products include auto transformers, isolation transformers, constant voltage, rectifier and filament transformers. Our control transformers are commonly used to step down primary circuit voltages to lower voltages to be used for control circuit applications. Auto transformers offer size advantages when compared to equivalent isolation transformers. Isolation transformers are used to step-up, step-down and isolate voltages in single phase circuits. Isolation is used to provide output circuit immunity from voltage spikes and noise (both common-mode and transverse-mode) present on the input system.