US 11,951,851 B2
Switching device for a coil
Lukas Böhler, Flums (CH); Adrian Immler, Buchs (CH); Richard Knuchel, Buchs (CH); and Pirmin Bader, Rebstein (CH)
Assigned to BRUSA Elektronik AG, Buchs (CH)
Filed by BRUSA Elektronik AG, Buchs (CH)
Filed on May 26, 2023, as Appl. No. 18/202,495.
Application 18/202,495 is a continuation of application No. 17/253,961, granted, now 11,673,480, previously published as PCT/EP2019/066662, filed on Jun. 24, 2019.
Claims priority of application No. 10 2018 115 848.3 (DE), filed on Jun. 29, 2018.
Prior Publication US 2023/0294527 A1, Sep. 21, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. B60L 53/12 (2019.01); H02J 50/12 (2016.01); H02J 50/70 (2016.01); H02J 50/90 (2016.01); H04B 5/00 (2006.01); H02J 50/60 (2016.01)
CPC B60L 53/12 (2019.02) [H02J 50/12 (2016.02); H02J 50/70 (2016.02); H02J 50/90 (2016.02); H04B 5/0037 (2013.01); H02J 50/60 (2016.02)] 10 Claims
OG exemplary drawing
 
1. A method of testing an impedance-sensitive system with a switching device, the switching device comprising an input connection configured to connect to a coil electronics system and/or to a resonant circuit capacitor, an output connection configured to connect to an end of a coil and/or to the resonant circuit capacitor, and a disconnecting device comprising a switch and an impedance connected in parallel, the disconnecting device being switchable between an on-state and an off-state using the switch, wherein in the on-state the disconnecting device is configured to connect the input connection and the output connection to an on-impedance when the switch is closed, wherein in the off-state the disconnecting device is configured to connect the input connection and the output connection to an off-impedance determined by the impedance connected in parallel when the switch is open, wherein the off-impedance has an increased value compared to the on-impedance, permitting a current flow between the input connection and the output connection while damping an external positioning signal of a definable frequency that couples into the coil so as to reduce undesirable oscillations of the coil, the method comprising:
switching the disconnecting device into the on-state configured to permit transmission of energy via the coil;
implementing a first measurement with the impedance-sensitive system;
switching the disconnecting device into the off-state configured to permit damping of the external positioning signal that couples into the coil so as to reduce the undesirable oscillations of the coil;
implementing a second measurement with the impedance-sensitive system;
performing a comparison of the first measurement and the second measurement;
performing a verification of the comparison with a target specification; and
displaying a correct function and/or a malfunction depending on the verification.