Abstract: The electromagnetic moving-coil device in which a position coil is provided to function as a secondary coil in accordance with the principles of a linear variable differential transformer so that when a high-frequency excitation signal is superimposed upon the driver signal applied to the moving coil, a position coil picks up the position of the moving coil and allows that position to be computed or displayed.
Abstract: A moving coil linear actuator has a bobbin or coil wound as close packed turns of rectangular - cross section wire and radially polarized circumferentially continuous ring magnets which are provided with flux focusing cladding. The result is a light-weight high power linear actuator.
Abstract: A moving coil linear actuator has a bobbin or coil wound as close packed turns of rectangular—cross section wire and radially polarized circumferentially continuous ring magnets which are provided with flux focusing cladding. The result is a light-weight high power linear actuator.
Abstract: The electromagnetic moving-coil device in which a position coil is provided to function as a secondary coil in accordance with the principles of a linear variable differential transformer so that when a high-frequency excitation signal is superimposed upon the driver signal applied to the moving coil, a position coil picks up the position of the moving coil and allows that position to be computed or displayed.