Reducing EMI from an Internally Clocked Sigma-Delta Modulator Through Spread Spectrum
Over the past two decades, shunt-based current-sensing technology using Broadcom's optically isolated sigma-delta modulator has gained wide acceptance with industrial general inverters and servo drives over traditional current transformers (CTs) and hall effect sensors (HESs). In addition to small size and low cost advantages, various current sensing ranges can be easily realized by choosing an appropriate shunt resistance value and connecting to the sigma-delta modulator.
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Related Categories: Industrial, Transformers
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