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절연기 개요
Electrical isolators separate different circuit sections to block high‑voltage interference and avoid ground‑loop problems. Common types include optocouplers and digital isolators.
Optocouplers use light to transfer signals without physical electrical connection. Modern digital isolators rely on magnetic‑field coupling for faster‑speed signal transmission.
Critical parameters are isolation voltage, data rate and power consumption. They prevent high‑voltage surges from damaging sensitive chips like ICs and sensors on low‑voltage sides.
Isolators are common in industrial controllers, automotive electronics and power‑supply modules. They improve system safety, reduce noise and stabilize data communication between high‑voltage and low‑voltage circuits.
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