A power transmission apparatus for transmitting power to a power reception apparatus, which is located on a surface of the power transmission apparatus and which includes a power reception coil, in a non-contact manner, wherein the power transmission apparatus comprises: a power transmission coil that is disposed within the power transmission apparatus opposite the surface of the power transmission apparatus, wherein the power transmission coil is adapted to be electromagnetically coupled with the power reception coil of the power reception apparatus; at least one position detection coil (15a-i) disposed between the surface and the power transmission coil, wherein the at least one position detection coil is adapted to detect a signal from the power reception coil of the power reception apparatus; a position detection circuit adapted to send detection pulses to the at least one position detection coil (15a-i) and to determine that the power reception apparatus is located on the surface if a voltage or a current of the signal detected via the at least one position detection coil (15a-i) is smaller than a reference value; a reception circuit adapted to demodulate a wireless signal from the power reception apparatus, which is received by the at least one position detection coil (15a-i), into a data signal; characterized by a switch circuit (15k, 15j) adapted to switch between a first electrical connection of the at least one position detection coil (15a-i) to the position detection circuit, and a second electrical connection of the at least one position detection coil (15a-i) to the reception circuit; and a power transmission control circuit adapted to control the switch circuit (15k, 15j) to switch from the first electrical connection to the second electrical connection, if the position detection circuit has determined that the voltage or the current of the signal detected via the at least one position detection coil (15a-i) is smaller than the reference value for a predetermined period, and to cause the reception circuit to receive the wireless signal via the at least one position detection coil (15a-i). a power transmission coil that is disposed within the power transmission apparatus opposite the surface of the power transmission apparatus, wherein the power transmission coil is adapted to be electromagnetically coupled with the power reception coil of the power reception apparatus; at least one position detection coil (15a-i) disposed between the surface and the power transmission coil, wherein the at least one position detection coil is adapted to detect a signal from the power reception coil of the power reception apparatus; a position detection circuit adapted to send detection pulses to the at least one position detection coil (15a-i) and to determine that the power reception apparatus is located on the surface if a voltage or a current of the signal detected via the at least one position detection coil (15a-i) is smaller than a reference value; a reception circuit adapted to demodulate a wireless signal from the power reception apparatus, which is received by the at least one position detection coil (15a-i), into a data signal; characterized by a switch circuit (15k, 15j) adapted to switch between a first electrical connection of the at least one position detection coil (15a-i) to the position detection circuit, and a second electrical connection of the at least one position detection coil (15a-i) to the reception circuit; and a power transmission control circuit adapted to control the switch circuit (15k, 15j) to switch from the first electrical connection to the second electrical connection, if the position detection circuit has determined that the voltage or the current of the signal detected via the at least one position detection coil (15a-i) is smaller than the reference value for a predetermined period, and to cause the reception circuit to receive the wireless signal via the at least one position detection coil (15a-i).