Contact switch output circuit

The utility model provides a contact switch output circuit comprising a contact. The two ends of the contact are connected with the anode and cathode of a power supply of the contact switch output circuit respectively. The contact switch output circuit further comprises a time-delay resistor and a time-delay capacitor. The time-delay resistor is connected in series with the contact. The two ends of the series branch are connected with the two ends of the time-delay capacitor respectively. One end of the time-delay capacitor is connected with the cathode of the power supply of the contact switch output circuit. The other end of the time-delay capacitor is connected with the anode of the power supply of the contact switch output circuit, serving as a contact output terminal which outputs a switch signal. According to the contact switch output circuit, when the contact is closed, a voltage of the contact output terminal changes slowly due to the time-delay capacitor; and when the contact is fully closed and the