Force measuring transducer

摘要

The invention relates to a force measuring transducer with an oscillator ( 1 ) with an inductor ( 2 ) formed by a primary winding and a gauge ( 11 ) with a secondary winding ( 30 ) which is connected electroconductively to the gauge ( 11 ) and which is disposed in transformer coupling with the inductor ( 2 ) of the oscillator ( 1 ). Action of a force on the gauge ( 11 ) changes the impedance of the gauge ( 11 ) and the load of the inductively coupled secondary winding ( 30 ). An evaluation circuit ( 14 ) is used to determine the resulting frequency change of the oscillator ( 1 ) which is proportional to the force acting on the gauge ( 11 ).