Värmestyrning I Handske

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This rapport is result of a project. The purpose of which was to design a circuit that is used in a heat glove. The heat glove is the technical aid which provides heat inside a glove. It is specially suited for old people who have problems with cold hands because of decreased blood circulation. There already was an old circuit in the glove that gives a constant current which develops heat from battery to glove through a circuit. The temperature is between 32 and 34 degrees. The problem with the existing circuit was to regulate the temperature. There is only on/off switch and there is no way to adjust desirable value of the temperature. In order to solve the problem the old circuit was investigated. A whole new circuit has developed which resulted in a control system with feedback. This system has a controller and a sensor. A sensor feels the current temperature and connects that to comparator ...