Brandt Cooking

Christophe Yve

Didier Gouardo

Rene Cornec

An inverter power supply device designed to supply power to a resonant circuit, includes a generator, having at least one switch series-connected with the resonant circuit and a freewheeling diode parallel-connected with the switch, the switch being controlled by a periodic signal with a frequency known as a working frequency. The device furthermore includes first device providing a measurement of the instantaneous current flowing in the resonant circuit; second device to deduce the maximum current (I.sub.max) from the instantaneous current; third device to deduce the current known as the switching current from the instantaneous current, this switching current being the current for which the switch or the freewheeling diode that is associated with it becomes conductive (I.sub.commut); first control device for the switch, receiving the maximum current(I.sub.max), the switching current (I.sub.commut) and an instructed value given by the user, modifying the instructed value given by the user as a function of the maximum current (I.sub.max) and the switching current (I.sub.commut) and giving the periodic signal as a function of the modified instructed value.

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St Jean de la Ruelle, France

Christophe Yve