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Small, Multipurpose Transducer is Stable and Responsive Inventor: Gilbert Gianetti The University of Vermont, Office of Technology Commercialization Overview Invention Transducers that translate forces, pressures, and displacements into electrical signals that can be used to measure such forces, pressures, and displacements are used in many applications. A currently popular transducer is a Kulite Type BG-10, manufactured by Kulite Semiconductor Products, Inc. Although these semiconductor strain gauge transducers are widely used, they can suffer from a number of drawbacks, such as being easily damaged by slight overloads applied to the force beam, causing the transducer to be non-functional, or have a very large offset voltage, that may not be able to be compensated for in electronic amplifiers. Mr. Gianetti’s electrical transducer system offers small size, stability, high signal output, and adaptability to numerous applications that require measurement of 0 – 10 gram forces. The system incorporates a pair of parallel circuits tuned at, or near, resonance with a radio-frequency voltage source. A capacitive transducer is inductively coupled to one of the circuits so that forces acting on the transducer are transformed into variations in the tuned circuit. As tuning moves above or below resonance, output can be measured as a positive or negative voltage. The signal, typically measured in hundreds of millivolts, can be used as is or amplified. Coaxial cable allows linking of the transducer to a detection circuit across a relatively long distance without degrading the system’s performance. Advantages • Small, stable, high signal output • Adaptable to a variety of applications • Longer lifespan and lower maintenance for transducer • Rapid beam flexing allows output of fast data streams Applications • Research universities • Pharmaceutical companies • Manufacturers I.P. Status US Patent # 8,427,178 Follow us on Twitter Learn more about UVM research at: www.uvm.edu/uvminnovations/ For more information and licensing opportunities, contact us at: Ph: 802-656-8780 or email: [email protected] Connect with us on Linked In www.uvm.edu/uvminnovations/