Profile: Toroid Corporation is an ISO 9000 certified provider for high performance toroidal power transformers. We provide the economical design that comply with electrical and mechanical specifications. We offer software programs that are developed to calculate transformer data, based on customers' DC data after rectification. Online shopping for standard design power and isolation transformers are also available. The industrial control transformers, C-series, are designed with very low temperature rise, excellent voltage regulation and extreme overload capacity of in-rush current demand by the contactors, relays and solenoids.