Lg Electronics Inc.

Gwang Mi Go

Han Jin Cho

Byung Hyun An

An electronic device having a self-diagnosis function is proposed. In the electronic device, a fault detector is provided on a primary side of a power board, so that fault states of a main board and a load may be detected even when the main board is broken or power is not applied to the main board. In addition, as long as commercial alternating power is input, even in a state where a power switch is turned off, the electronic device is supplied with the power, so that various types of faults in the main board and the load may be detected.

Electronic device having self-diagnosis function

An inverter and inverter driving method enable slow start of a load by gradually increasing the lamp current within a range less than a predetermined maximum level, thereby preventing improper operation of the inverter. The inverter includes a transformer for converting a DC input voltage into an AC output voltage, an inverter control unit for controlling a level of the AC output voltage from the transformer in response to a feedback current from a load driven by the AC output voltage, and a kick-off control unit for adjusting the feedback current during a kick-off period for starting the load.

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Gumi-si, South Korea

Gwang Mi Go