Position detecting device

A position detecting device for detecting a position of a movable body, the position detecting device comprising:

• a detector element that outputs a signal varying with movement of the movable body;
• a signal processing circuit that processes the signal outputted from the detector element;
• and
• an output circuit that outputs a signal from an output terminal based on a signal outputted from the signal processing circuit,
• wherein the output circuit includes
• an output transistor that is connected in series in a conductor connecting a power supply terminal and ground and controls a voltage of the conductor to be outputted from the output terminal,
• a control circuit that controls the output transistor based on the signal outputted from the signal processing circuit,
• an output conductor that has one end connected to the conductor including the output transistor therein and an other end connected to the output terminal,
• a voltage detection circuit that detects a voltage applied from the output terminal to the output transistor, and
• a current shut-off circuit that shuts off electric conduction between the output terminal and the output transistor, when the voltage detection circuit detects that a voltage higher than a withstand voltage of the output transistor is applied to the output transistor.