Temperature-control arrangement

摘要

A circuit arrangement is proposed for controlling the temperature of an electric heating element, which circuit arrangement essentially has a comparator stage and a switching stage which can be influenced by means of the comparator stage, in which a construction requiring only a minimum number of components can be implemented by inserting a time stage after the comparator stage, by means of which time stage the switching stage can be switched on for a specific, relatively short time, and that a constant-voltage source effecting an approximately constant current is present for measuring the actual value during the switched-off state of the switching stage, which constant-voltage source is connected to the electrical connection which exists between the heating element and the comparator stage.