Abstract: A cooktop includes a plurality of heaters that form a contiguous cooking zone, a power supply for the plurality of heaters with a differentiator that differentiates between a first positive heating power for a first of the plurality of heaters and a second positive heating power for a second of the plurality of heaters in a differentiated heating mode.

Abstract: A temperature control and method of operating the temperature control, for an inductively heated heating element. The heating element is heated by an inductor to which electrical power is supplied via a control circuit, which can also be a control circuit for an induction hob or oven. The temperature control is activated at a first point in time subject to at least one electrical value of the control circuit, which depends on the temperature of the heating element. A reference value is determined at the first point in time and a comparison value and a deviation value from the reference value is determined at least one later point in time. Depending upon the deviation value, the inductor is supplied with power so that the heating element is adjusted to a substantially constant value corresponding to the reference value.

Abstract: A device, in particular, for inductively heating up a heating element by means of an inductor and an element for recording a reference quantity which is dependent on the temperature of the heating element and derived from the electric quantity of the inductor in such a way that it makes it possible to form the reference value from the reference quantity and to adjust the temperature according to the reference quantity adjustment by means of the reference value. The aim of said invention is to carry out a reliable adjustment of a water temperature or of a cooked product even at extreme conditions or when the reference value is incorrect. For this purpose, the device comprises a correction means for correcting the reference value.

Abstract: A cooking hob, especially an induction cooking hob, including a first heating zone having at least two independently heatable heating elements operable by a first power supply via a first switching device, and at least one additional heating zone operable by a second power supply via a second switching device in a normal mode of operation. The heating capacity of the first heating zone can be increased beyond a maximum power of the first power supply while the first heating zone and the additional heating zone are operated simultaneously in the normal mode of operation. The cooking hob includes a switching element for establishing a power supply connection between the second power supply and one of the heating elements of the first heating zone in a special mode of operation so as to increase the heating capacity of the first heating zone.

Abstract: A frequency converter circuit has at least two outputs that are respectively connected to a load, in particular an induction coil. A first output is operated at a first switching frequency and a second output is simultaneously operated at a second switching frequency that is different from the first, in such a way that noise having a frequency generated by the superposition of the first switching frequency and the second switching frequency is produced. The frequency converter circuit is operated in such a way that the frequency of the noise is lower than a first cutoff frequency and/or is higher than a second cutoff frequency.

Abstract: A temperature control and method of operating the temperature control, for an inductively heated heating element. The heating element is heated by an inductor to which electrical power is supplied via a control circuit, which can also be a control circuit for an induction hob or oven. The temperature control is activated at a first point in time subject to at least one electrical value of the control circuit, which depends on the temperature of the heating element. A reference value is determined at the first point in time and a comparison value and a deviation value from the reference value is determined at least one later point in time. Depending upon the deviation value, the inductor is supplied with power so that the heating element is adjusted to a substantially constant value corresponding to the reference value.