A position detection device comprising: a coil section comprising a plurality of coils (4a, 4b'; 41, 43', 42, 44'; 41, 42) disposed at a predetermined interval from each other; a target section whose relative position to the coil section varies in response to a position of a detection object, said target section including a magnetism-responsive member constructed to cause the respective inductance of the plurality of coils (4a, 4b'; 41, 43', 42, 44'; 41, 42) to vary in accordance with the relative position; a circuit comprising a plurality of voltage-dividing circuits connected in parallel with each other, each of the plurality of coils (4a, 4b'; 41, 43', 42, 44'; 41, 42) being incorporated in one of the voltage-dividing circuits as a voltage-dividing element, each of the voltage-dividing circuits having a voltage-dividing point at which one coil of the plurality of coils (4a, 4b'; 41, 43', 42, 44'; 41, 42) is connected to another voltage-dividing element in series,; and an output circuit (21, 22, 23) that is adapted to output position data of the detection object based on output signals of said circuit, wherein said output circuit (21, 22, 23) is configured to extract an amplitude level of the output signals of said circuit and output the extracted amplitude level as the position data of the detection object, characterized in that said circuit is a self-oscillation circuit comprising a capacitor (14, 15) and incorporating the plurality of coils (4a, 4b'; 41, 43', 42, 44'; 41, 42) in the respective voltage-dividing circuits as inductance elements for self-oscillation, and said output signals are a plurality of oscillation output signals (+DVout, -DVout; +sinOUT, -sinOUT, +cosOUT, -cosOUT) output from the voltage-dividing points of individual ones of the voltage-dividing circuits. a coil section comprising a plurality of coils (4a, 4b'; 41, 43', 42, 44'; 41, 42) disposed at a predetermined interval from each other; a target section whose relative position to the coil section varies in response to a position of a detection object, said target section including a magnetism-responsive member constructed to cause the respective inductance of the plurality of coils (4a, 4b'; 41, 43', 42, 44'; 41, 42) to vary in accordance with the relative position; a circuit comprising a plurality of voltage-dividing circuits connected in parallel with each other, each of the plurality of coils (4a, 4b'; 41, 43', 42, 44'; 41, 42) being incorporated in one of the voltage-dividing circuits as a voltage-dividing element, each of the voltage-dividing circuits having a voltage-dividing point at which one coil of the plurality of coils (4a, 4b'; 41, 43', 42, 44'; 41, 42) is connected to another voltage-dividing element in series,; and an output circuit (21, 22, 23) that is adapted to output position data of the detection object based on output signals of said circuit, wherein said output circuit (21, 22, 23) is configured to extract an amplitude level of the output signals of said circuit and output the extracted amplitude level as the position data of the detection object, characterized in that said circuit is a self-oscillation circuit comprising a capacitor (14, 15) and incorporating the plurality of coils (4a, 4b'; 41, 43', 42, 44'; 41, 42) in the respective voltage-dividing circuits as inductance elements for self-oscillation, and said output signals are a plurality of oscillation output signals (+DVout, -DVout; +sinOUT, -sinOUT, +cosOUT, -cosOUT) output from the voltage-dividing points of individual ones of the voltage-dividing circuits.