Patent ID: 9500699
Filing Date: 2016-11-22
CPC Classification: G01R,H02H

Claim Text:
1. A surge protection circuit, comprising: at least one first electronic component having a non-linear characteristic, and which is electrically conductively connected between a tapping point, to which a supply potential is appliable, and a node point, wherein the first electronic component includes a diode, a cathode of the diode being connected to the tapping point to which the supply potential is appliable, and an anode of the diode being connected to the node point; at least one second electronic component having a non-linear characteristic, and which is electrically conductively connected between a tapping point, to which a ground potential is appliable, and the node point; a resistor connected between the node point and a control connection; and a monitoring unit to apply a predetermined voltage to the control connection or to output a predetermined current via the control connection and to detect a voltage or a potential at the node point in response to this, wherein the control connection is an output of the monitoring unit, and wherein the monitoring unit is configured to identify a malfunction in the surge protection circuit when the detected voltage or the detected potential is not related to an expected voltage or an expected potential in a predetermined manner.