OHMIC HEATER AND METHOD FOR OPERATING

An ohmic heater for heating a food product, comprising: - an inverter (3) comprising controlled switches (30); - a pair (4) of electrodes that can be positioned in contact with the food product to be heated, said inverter (3) being operatively interposed between a rectifier (2) of the supply voltage and the pair (4) of electrodes; - a transformer (6) located between the inverter (3) and the pair (4) of electrodes for regulating the amplitude of the voltage; - means (7) for determining the continuous component of the current in a zone downstream of the inverter (3) and upstream or at the transformer (6); - a system (800) for regulating the closing duration of the switches (30) of said inverter (3) that operates as a function of the means (7) for determining the continuous component by minimising/suppressing said continuous component.