Recording on a Wire

Overview

Objectives/Goals The objective of this project was to determine the optimum conditions for the recording and play back of information when a magnetic wire was run passed a transducer. The optimum transducer (ferrite bead) would create the largest amount of voltage during playback, creating the highest quality recording. It was hypothesized that the greater the resistance of the transducer the greater the voltage generated. The hypothesis was incorrect. The optimum resistance for the transducer was 28 ohms in this project. A transducer with more or less resistance generated a smaller amount of voltage, therefore creating a lower quality recording. Methods/Materials Materials Digital Multimeter Transducer Wire turning appartus Procedure Create an appartus which enables one to spin magnetic wire past a transducer Vary the resistance of the transducer Record which transducer is the most effictive Record Results Results A 3/4 inch ferrite bead with a coil of 28 ohms resistance was most effective in creating the optimum recording and playback conditions Conclusions/Discussion The results of my experiment proved my hypothesis to be incorrect. It was hypothesised that as the resistance of the treansducer increased the quality of the recording would also increase. After conducting the experiment the data protrays that there was an optimum resistance for the transducer, 28 ohms. If the transducer had more of less resistance the quality of the recording decreased.

Competition history

• CSEF 2008 Electronics & Electromagnetics · Entry J0818

Resources

• CSEF project summary ↗

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