PhysLab_S10_Sky_ RLC Circuits - PhysLab_S10_Sky_ RLC...

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Unformatted text preview: PhysLab_S10_Sky_ RLC Circuits Pinyin name: Tian Yunfan English name: Sky Date: 14/5/2010 Temperature: 25 C Humidity: 72% PROBLEM DESCRIPTION This Lab investigates the magnitude-frequency characteristic and phase-frequency characteristic of RC, RL, RLC series circuit (R means resistance, L means inductor, C means capacitor). Moreover, we should learn how to use dual-trace oscilloscope to measure phase difference . In lab, the two problems were approached using three basic scientific methods. First, predictions were made about the relationship between amplitude and frequency, phase difference and frequency. Second, date and graph were tested and recorded. Finally, the results were analyzed and conclusions were made. The lab required use of a SS7802 dual-trace oscilloscope, function signal generator, mill voltmeter, standard capacitor, inductor, resistance box, breadboard, switch and so on. PREDICTION If the AC sinusoidal signal stays unchanged, the relationship between voltage and frequency called the magnitude-frequency characteristic; the relation between phase difference and frequency called phase-frequency characteristic. The essential question is how U C (the voltage of inductor), U R (the voltage of resistance) changes as the frequency changes. It was predicted that U R increases, U C decreases as f increases in RC series circuit; U R increases, U C decreases as f increases in RL series circuit; increases as f increases in RLC series circuit. The results of lab will be able to approve or disprove this prediction because actual data will be captured....
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This note was uploaded on 10/02/2010 for the course CIVIL ENGI 09332005 taught by Professor Kaiminshi during the Spring '10 term at Hong Kong Baptist University, China.

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PhysLab_S10_Sky_ RLC Circuits - PhysLab_S10_Sky_ RLC...

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