Cooking appliances
Most early electric cooking appliances were very simple; they were often adaptations of non-electric devices with a heating element tacked on or slotted in somewhere. As they became more sophisticated, switching was introduced on the larger appliances to select different heat levels by rearranging multiple element sections in series or parallel. Thermostatic control eventually became standard as the technology for making small, reliable thermostats developed.
To start us off we have a couple of tabletop devices consisting of heating elements arranged to cook a particular type of food: The toaster has an element the size of a slice of bread and a means to keep the two parallel but not touching, while the waffle maker is really a diminutive moulding-press with electrically heated platens!
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