Dual range position sensing configurations for variable differential transformers

An assembly comprising:

• a housing;
• a first set of coils mounted to the housing, wherein the first set of coils extends in a first direction along the housing for a first length;
• a second set of coils mounted to the housing, wherein the second set of coils extends in the first direction along the housing for a second length that is shorter than the first length;
• and
• a core member including a first core and a second core in series with one another in the first direction along the core member, wherein the core member is moveable within the housing along a stroke, wherein the first core and the second core are mounted stationary with respect to one another and with respect to the core member, and wherein the first core and the second core are mounted to the core member for movement together with the core member relative to the housing, wherein for at least a first portion of the stroke, the first core is within the first set of coils, and wherein for at least a second portion of the stroke, the second core is within the second set of coils, wherein the second set of coils and second core are configured to provide greater spatial resolution for measurements of position of the core member than are the first set of coils and first core.