February 22, 2014
An optical quadrature encoder is an incremental encoder with outputs consisting of two incremental channels that are out of phase by 90 electrical degrees. In each part of the encoder cycle, the two signals are in unique positions relative to each other. By comparing the difference between the high and...
September 14, 2013
A standard edge sensing scheme for optical rotary encoders is to square up the raw analog sine wave by comparing it against a given voltage. If your analog signal has a 2Vpp amplitude, the value at which you switch off of, creating the edges of your square waves, could be...
May 13, 2013
May 1, 2013
“What resolution of rotary encoder do I need?” is a question designers often ask themselves. A common mistake is that a higher resolution is always better. This may or may not be the case. Ultimately it is the nature of the application that decides. Here are some things to take...
March 10, 2013
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