A lowpass filter changes the oscillator output into an envelope signal

Authors	Juan Pablo Caram
Main Document	Article «Broken-coil detector is simple yet robust»
Description	Figure 2
File Format / Size	PDF / 12 Kb
Document Language	English

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Article «Broken-coil detector is simple yet robust»

Figure 1. An oscillator generates a stable signal based on the values of L₁, L₂, and C₁
Figure 2. A lowpass filter changes the oscillator output into an envelope signal
Figure 3. A second-order lowpass filter removes ripple from the envelope detector's output
Figure 4. Comparator IC₆ monitors the voltage across C₆ and activates when the C₆ voltage exceeds a preset value from R₁₅

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