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Investigate the properties of a sensor.
Member rating: No Rating | Words: | Submitted: Thu Jan 01 2004
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SENSORS COURSEWORK PLAN: We were asked to investigate the properties of a sensor. The sensor I have chosen is a potentiometer. A potentiometer is a device which taps off a fraction of its input to provide a controlled output. It consists of a sliding contact which moves across wire coils to cause a change in resistance. Equal movements of the sliding contact give equal changes in output. We are actually using the potentiometer as a variable resistor so that instead of tapping of a proportion of the potential difference it taps off a part of the resistance. We are using a rotary potentiometer for our experiments. This means that the slider moves in a circular motion across the contacts. For us to be able to conduct tests we must be able to accurately measure how much we have moved the contacts so that we can compare it with the change in resistance....
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