Abstract: An apparatus and a method for determining a power value of a target in the form of an AC circuit (130; 230; 330) having an AC power source (132; 232; 332). The method involves operating (72) a controllable DC power source (12) to provide DC power to a DC circuit (10; 110; 210; 310) and measuring (73) at least one thermal parameter related to power dissipation of the DC circuit (10; 110; 210; 310) and of the target AC circuit (30; 130; 230; 330), wherein at least one heat sink (160a, 160b; 260; 360) is thermally coupled between the DC circuit (10; 110; 210; 310) and the target AC circuit (30; 130; 230; 330). The method further involves controlling (74) the DC power source (12) based on the measured at least one thermal parameter to reduce a difference in power dissipation between the DC circuit (10; 110; 210; 310) and the target AC circuit (30; 130; 230; 330).

Abstract: A testing device for use in testing of wireless power transfer is disclosed. The testing device has a housing, a wireless power receiver coil provided in the housing, and a cable extending from the housing at a first end and having a cable connector at a second end. The cable accommodates connection wiring of the wireless power receiver coil. The cable connector comprises a data storage configured to contain characteristic information about the wireless power receiver coil.

Abstract: An apparatus and a method for determining a power value of a target in the form of an AC circuit (130; 230; 330) having an AC power source (132; 232; 332). The method involves operating (72) a controllable DC power source (12) to provide DC power to a DC circuit (10; 110; 210; 310) and measuring (73) at least one thermal parameter related to power dissipation of the DC circuit (10; 110; 210; 310) and of the target AC circuit (30; 130; 230; 330), wherein at least one heat sink (160a, 160b; 260; 360) is thermally coupled between the DC circuit (10; 110; 210; 310) and the target AC circuit (30; 130; 230; 330). The method further involves controlling (74) the DC power source (12) based on the measured at least one thermal parameter to reduce a difference in power dissipation between the DC circuit (10; 110; 210; 310) and the target AC circuit (30; 130; 230; 330).

Abstract: A testing device for use in testing of wireless power transfer is disclosed. The testing device has a housing, a wireless power receiver coil provided in the housing, and a cable extending from the housing at a first end and having a cable connector at a second end. The cable accommodates connection wiring of the wireless power receiver coil. The cable connector comprises a data storage configured to contain characteristic information about the wireless power receiver coil.

Abstract: A testing device for use in testing of wireless power transfer is disclosed. The testing device has a housing, a wireless power receiver coil provided in the housing, and a cable extending from the housing at a first end and having a cable connector at a second end. The cable accommodates connection wiring of the wireless power receiver coil. The cable connector comprises a data storage configured to contain characteristic information about the wireless power receiver coil.

Abstract: A testing device is provided for use with a wireless power transmitter device having a wireless power transmitter coil. The testing device has a housing, the housing having a bottom side adapted for placement on a surface of the wireless power transmitter device, and a top side opposite to the bottom side. A wireless power receiver coil is provided in the housing. The testing device also has thermo sensory means and an interface to provide measurement data from the thermo sensory means. The thermo sensory means includes at least a first temperature sensor adapted to measure a temperature at a first position inside the housing, and a second temperature sensor adapted to measure a temperature at a second position external to the housing.

Abstract: A testing device is provided for use with a wireless power transmitter device having a wireless power transmitter coil. The testing device has a housing, the housing having a bottom side adapted for placement on a surface of the wireless power transmitter device, and a top side opposite to the bottom side. A wireless power receiver coil is provided in the housing. The testing device also has thermo sensory means and an interface to provide measurement data from the thermo sensory means. The thermo sensory means includes at least a first temperature sensor adapted to measure a temperature at a first position inside the housing, and a second temperature sensor adapted to measure a temperature at a second position external to the housing.

Abstract: A testing device (30) is provided for use with a wireless power transmitter device (20) having a wireless power transmitter coil (24). The testing device (30) has a housing (50), the housing having a bottom side (53) adapted for placement on a surface (25) of the wireless power transmitter device (20), and a top side (54) opposite to the bottom side (53). A wireless power receiver coil (34) is provided in the housing. The testing device (30) also has thermo sensory means (31) and an interface (33) to provide measurement data from the thermo sensory means (31). The thermo sensory means (31) includes at least a first temperature sensor (55) adapted to measure a temperature at a first position inside the housing (50), and a second temperature sensor (56) adapted to measure a temperature at a second position external to the housing (50).

Abstract: A testing device for use in testing of wireless power transfer is disclosed. The testing device has a housing, a wireless power receiver coil provided in the housing, and a cable extending from the housing at a first end and having a cable connector at a second end. The cable accommodates connection wiring of the wireless power receiver coil. The cable connector comprises a data storage configured to contain characteristic information about the wireless power receiver coil.

Abstract: A testing device (30) is provided for use with a wireless power transmitter device (20) having a wireless power transmitter coil (24). The testing device (30) has a housing (50), the housing having a bottom side (53) adapted for placement on a surface (25) of the wireless power transmitter device (20), and a top side (54) opposite to the bottom side (53). A wireless power receiver coil (34) is provided in the housing. The testing device (30) also has thermo sensory means (31) and an interface (33) to provide measurement data from the thermo sensory means (31). The thermo sensory means (31) includes at least a first temperature sensor (55) adapted to measure a temperature at a first position inside the housing (50), and a second temperature sensor (56) adapted to measure a temperature at a second position external to the housing (50).