Patent ID: 9194905
Filing Date: 2015-11-24
Classification: G01R

Abstract:
1. A processing circuit having an input terminal to which an input signal generated by an input signal generator is inputted via an input line between the input signal generator and the input terminal, the processing circuit being configured to perform a predetermined process for the input signal, wherein an external capacitor is connected to the input line in parallel with the processing circuit, the processing circuit comprising: a pulse circuit configured to generate a pulsed voltage having at least one pulse; at least one switch provided between the pulse circuit and the input line; a controller that controls the at least one switch so as to apply the pulsed voltage generated by the pulse circuit to the input line via a resistor; a detector configured to detect a change in a voltage of the input line caused by application of the pulsed voltage to the input line; a determiner that determines whether the processing circuit is in a normal condition or in an abnormal condition based on the change detected by the detector.