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electrical voltage or an electrical current we call it a sensor. We will see a few examples of sensors shortly. When the transducer converts an electrical signal into Classification and descriptions of transducers. ? Survey of possible energy conversions. ? Optical, mechanical, thermal, magnetic and chemical. ? Sensor There are a number of performance related parameters of a transducer or measurement system. These parameters are called as sensor specifications. Sensor Sensors p. 1. ECE 445: Biomedical Instrumentation. • Sensor Calibration. Transducers. • Transducer. • a device that converts a primary form of energy into a Introduction. 2. Motion Sensors. 2.1. Resistive Potentiometers. 2.2. Linear Variable Differential Transformers (LVDT). 2.3. Capacitive Sensors. 2.4. Strain Gages. A transducer is any device which converts one form of energy into another. Examples of common transducers include the following: • A microphone converts Output full scale (OFS): difference between the upper and lower ranges of the output of the sensor. • Dynamic range: ratio between the upper and lower limits and 22 Jan 2013 -book we shall deal with actuators under the heading of transducers. The di?erences between sensors and transducers are often very slight. A sensor performs a