POWER SUPPLY DEVICE AND IMAGE FORMING APPARATUS HAVING SAME Russian patent published in 2017 - IPC G09F13/30 

FIELD: electrical equipment; image forming apparatus.

SUBSTANCE: invention discloses a power supply device and an image forming apparatus having a power supply device. Power supply device include an input unit to input alternating current (AC) power, a converter to convert input AC power to direct current (DC) power having a preset level and to output DC power and a sensor to be connected to input unit in parallel and to sense whether AC power has been input. Sensor includes a transformer to receive AC power and to output a sensing signal having a level reduced more than a level of AC power, and a resistor unit connected to transformer in series so that a current of AC power input into transformer is lower than or equal to a preset current.

EFFECT: power supply device and image forming apparatus comprising same are disclosed.

15 cl, 9 dwg