CUI (Tualatin, OR) offers the AMT31 modular encoder series that generates standard U/V/W commutation signals for vectoring current to brushless motors. Positional information is generated using a patented capacitive code generation system coupled with a proprietary ASIC. The encoder is designed for use in brushless dc motor applications subject to vibration and contaminants such as dust, dirt, and oil that typically stop optical encoders from working effectively. They deliver accuracy of ±12 arcmin (±0.2 mechanical degrees). Twenty programmable resolutions are available with a range of 48 to 4096 PPR.

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