1 Answers
An off line regulator, off-line regulator, or offline regulator is an electronic voltage regulation or current regulation device that is designed to directly accept electric power obtained from an alternating current utility power source. That is "off the mains voltage line".
This electronics design terminology has no relationship to the use of "online and offline" for computers and networking, and no relationship with uninterruptible power supplies that provide power while disconnected from the electrical grid.
An off line regulator can be a complete integrated circuit with all capabilities necessary to provide clean power to a small portable or handheld device, or it may be used as part of a larger switched mode power supply or DC-DC converter.