Abstract: A radio frequency inductive heating apparatus includes a control device, a plurality of radio frequency devices, a plurality of transformers, a resonant tank circuit, a heating element, and a first power supply. The radio frequency devices are selectively activated by the control device, and each of the plurality of radio frequency devices is operatively coupled to of the plurality of transformers. At least one of the plurality of radio frequency devices are selectively activated by the control device based on a power set signal and a feedback signal, the power set signal representing a desired output current associated with the resonant tank circuit, the feedback signal representing an electrical control parameter associated with the resonant tank circuit. A corresponding method is also disclosed.

Abstract: A radio frequency inductive heating apparatus includes a control device, a plurality of radio frequency devices, a plurality of transformers, a resonant tank circuit, a heating element, a first power supply, and a second power supply. The radio frequency devices are selectively activated by the control device, and each of the plurality of radio frequency devices is coupled to the primary winding of one of the plurality of transformers. The secondary winding of each of the plurality of transformers is coupled to the resonant tank circuit, and the heating element is coupled to the resonant tank circuit. The plurality of radio frequency devices includes a first radio frequency device and a second radio frequency device. The first radio frequency device is coupled to the first power supply, and the second radio frequency device is operatively coupled to the second power supply. A corresponding method is also disclosed.

Abstract: A radio frequency inductive heating apparatus includes a control device, a plurality of radio frequency devices, a plurality of transformers, a resonant tank circuit, a heating element, and a first power supply. The radio frequency devices are selectively activated by the control device, and each of the plurality of radio frequency devices is operatively coupled to of the plurality of transformers. At least one of the plurality of radio frequency devices are selectively activated by the control device based on a power set signal and a feedback signal, the power set signal representing a desired output current associated with the resonant tank circuit, the feedback signal representing an electrical control parameter associated with the resonant tank circuit. A corresponding method is also disclosed.

Abstract: A radio frequency inductive heating apparatus includes a control device, a plurality of radio frequency devices, a plurality of transformers, a resonant tank circuit, a heating element, a first power supply, and a second power supply. The radio frequency devices are selectively activated by the control device, and each of the plurality of radio frequency devices is coupled to the primary winding of one of the plurality of transformers. The secondary winding of each of the plurality of transformers is coupled to the resonant tank circuit, and the heating element is coupled to the resonant tank circuit. The plurality of radio frequency devices includes a first radio frequency device and a second radio frequency device. The first radio frequency device is coupled to the first power supply, and the second radio frequency device is operatively coupled to the second power supply. A corresponding method is also disclosed.