Absicherungsschaltung

Ein elektrisches Bauelement erzeugt bei einer Fehlfunktion eine vorbestimmte Waermemenge. Es wird vor Ueberhitzen geschuetzt, indem es mit einer Sicherung in einer Schaltung so angeordnet wird, dass die Sicherung und das elektrische Bauelement thermisch miteinander gekoppelt sind, sodass das Erzeugen der Waermemenge durch das elektrische Bauelement ein Material in der Sicherung zum Schmelzen bringt. Dadurch wird der Stromanschlusspfad des elektrischen Bauelements unterbrochen.

DE 102005024321 A1 UPAB: 20070129 NOVELTY - The circuit has electrical loads (46a-46n) to generate heat amounts in functional and defective conditions. A safety device (42) is thermally coupled with the loads and has an electrically conducting material in an area between connections. The device is arranged in a manner that the device and loads are thermally coupled with each other, so that generation of the heat amounts brings the material in the device for melting by the loads. USE - Electrical circuit. ADVANTAGE - The safety device is arranged in a manner that the device and electrical loads are thermally coupled with each other, so that generation of the heat amounts brings the electrically conducting material in the device for melting by the loads, thus interrupting current connection path of the electrical loads, and hence protecting the circuit against overheating caused by malfunctioning in a cost-effective and efficient manner.