The microwave oven contains a working chamber with a product loading table, a microwave power source -a magnetron with a power supply and a waveguide structure for energy transfer to the working chamber, the furnace control unit. The microwave oven is equipped with light indicators of formation in the working chamber of a standing electromagnetic wave of critical tension, which are fixed on the side wall and doors inside the working chamber so that the glow of the indicators is visible from the outside through a transparent grille on the door. Each light indicator contains a light emitter and an inductive antenna that perceives the power of the electromagnetic wave, which irradiates the indicator. The electrodes of the light-emitting device are connected to the antenna, the ballast resistor is inserted into the chain of electrodes and antennas, the magnetron is attached to the thermorelay, the contacts of which are turned on in the control circuit of the magnetron power supply.
