Electrical

Arc Fault Circuit Interrupters (AFCI)

Electrical Diagrams · made in Skemio

AFCI diagram showing line input, current sensor, bandpass filter, fast ADC, DSP MCU, trip discriminator logic, and trip coil.
AFCI diagram showing line input, current sensor, bandpass filter, fast ADC, DSP MCU, trip discriminator logic, and trip coil.
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What it shows

  • Glowing arcs generate distinct, high-frequency current waveforms.
  • Bandpass filters isolate RF noise between 10MHz and 50MHz.
  • Onboard DSP algorithms differentiate drill motors from wall arcs.

The takeaway

AFCIs use digital signal processing to catch intermittent fires before ignition.

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