An induction heat cooking apparatus comprising: a rectifier that rectifies an input voltage to output a DC voltage; an inverter comprising a first switch, a second switch and a third switch adapted to switch the DC voltage outputted through the rectifier to generate an AC voltage; a first heating element having one end connected to a contact point between one end of the first switch and one end of the second switch, and another end connected to a resonant capacitor; a second heating element having one end connected to a contact point between another end of the second switch and one end of the third switch, and another end connected to a resonant capacitor; and characterized in that it further comprises: a switching signal generator for generating switching control signals for controlling the switches (S1; S2; S3) to control an operational state of each of the first and second heating elements (230, 240) according to a received operational mode signal, wherein the switching signal generator includes a first, second and third gate circuit part (271, 272, 273) that correspond to respective ones of the first to third switches (S1; S2; S3) of the inverter, each of the gate circuit parts (271, 272, 273) includes a photo-coupler (271P, 272P, 273P), a control power node (Vcc1-Vcc3), and a ground node (271G, 272G, 273G), wherein the operational mode signal is at least one of a signal for operating only the first heating element, a signal for operating only the second heating element, a signal for operating both the first and second heating elements (230, 240) and a signal for operating alternately the first and second heating elements (230, 240), wherein the second gate circuit part is adapted to output the switching control signal to continuously close or open the second switch of the inverter according to the operational mode signal for the heating elements (230, 240) inputted from a switching signal selection part. a rectifier that rectifies an input voltage to output a DC voltage; an inverter comprising a first switch, a second switch and a third switch adapted to switch the DC voltage outputted through the rectifier to generate an AC voltage; a first heating element having one end connected to a contact point between one end of the first switch and one end of the second switch, and another end connected to a resonant capacitor; a second heating element having one end connected to a contact point between another end of the second switch and one end of the third switch, and another end connected to a resonant capacitor; and characterized in that it further comprises: a switching signal generator for generating switching control signals for controlling the switches (S1; S2; S3) to control an operational state of each of the first and second heating elements (230, 240) according to a received operational mode signal, wherein the switching signal generator includes a first, second and third gate circuit part (271, 272, 273) that correspond to respective ones of the first to third switches (S1; S2; S3) of the inverter, each of the gate circuit parts (271, 272, 273) includes a photo-coupler (271P, 272P, 273P), a control power node (Vcc1-Vcc3), and a ground node (271G, 272G, 273G), wherein the operational mode signal is at least one of a signal for operating only the first heating element, a signal for operating only the second heating element, a signal for operating both the first and second heating elements (230, 240) and a signal for operating alternately the first and second heating elements (230, 240), wherein the second gate circuit part is adapted to output the switching control signal to continuously close or open the second switch of the inverter according to the operational mode signal for the heating elements (230, 240) inputted from a switching signal selection part. a switching signal generator for generating switching control signals for controlling the switches (S1; S2; S3) to control an operational state of each of the first and second heating elements (230, 240) according to a received operational mode signal, wherein the switching signal generator includes a first, second and third gate circuit part (271, 272, 273) that correspond to respective ones of the first to third switches (S1; S2; S3) of the inverter, each of the gate circuit parts (271, 272, 273) includes a photo-coupler (271P, 272P, 273P), a control power node (Vcc1-Vcc3), and a ground node (271G, 272G, 273G), wherein the operational mode signal is at least one of a signal for operating only the first heating element, a signal for operating only the second heating element, a signal for operating both the first and second heating elements (230, 240) and a signal for operating alternately the first and second heating elements (230, 240), wherein the second gate circuit part is adapted to output the switching control signal to continuously close or open the second switch of the inverter according to the operational mode signal for the heating elements (230, 240) inputted from a switching signal selection part.