Research Article

Fault Diagnosis for Analog Circuits by Using EEMD, Relative Entropy, and ELM

Figure 5

Examples of waveforms of fault-free status and fault status for the Sallen-Key bandpass filter circuit. (a) It is fault-free waveform, and (b), (c), (d), (e), and (f) are fault waveforms for C1 , C1 , C2 , R2 , and R3 , respectively.
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(b)
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