C32-activities - EXPERIMENT 10 Use Phase Shift Network...

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1 EXPERIMENT 10 B A Use Phase Shift Network Already Prepared v has a different Amplitude and different Phase than v Measure the amplitude ratio and phase shift by observing the Lissajous figures PHASE SHIFT OSCILLATOR 3 B 32 A 22 Vs H(s) 65 V ss 1 RC R C == + ++ For this Phase Shift Network: R 1 k ; C 104 nF Ω≈ 0 0 For some frequency, f , Phase Shift 180 = 0 We Can Find f Using PSpice 1k 104n N000111 104n 1k 104n 1k V1 1Vac PHASE SHIFT OSCILLATOR AC Sweep (1-750 Hz) Plot Phase of Vout 0 0 Phase 180 at f 591 Hz Very Sensitive to Value of C PHASE SHIFT OSCILLATOR 0 f6 2 4 H z = 0 180 Phase of Vout PHASE SHIFT OSCILLATOR 0 C f 110 nF 591 Hz 104 nF 624 Hz 100 nF 650 Hz PHASE SHIFT OSCILLATOR Take Output of Phase Shift Network and Put it into an Inverting Op Amp Have Feedback From Output of Op Amp to Input of Phase Shift Network - No Other Input to Phase Shift Network
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2 uA741 3 2 7 4 6 1 5 + - V+ V- OUT OS1 OS2 CC C R RR F R 5 V 5 V .47 nF C 104 nF = R1 k 100k Pot PHASE SHIFT OSCILLATOR PHASE SHIFT OSCILLATOR
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This note was uploaded on 10/21/2010 for the course ECSE 2010 taught by Professor Millard during the Spring '08 term at Rensselaer Polytechnic Institute.

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C32-activities - EXPERIMENT 10 Use Phase Shift Network...

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