Skewed Encoder Waveform

April 24, 2016

I received this e-mail from a potential customer who is trying to determine why his Encoder waveform doesn’t look right.  His name has been changed to protect his identity. Hi Jim I have just come across your Web page on RPM calculation using an optical encoder and oscilloscope. I was...

Incremental Encoder Engineer interview

April 4, 2016

I was featured in an interview with EEweb. Jim Miller – Application and Design Engineer at Quantum Devices How did you get into electronics/ engineering and when did you start? I started when I was pretty young, like nine or ten, taking apart radios and using an old wood-burning tool...

Cable length considerations with Incremental Encoders

March 16, 2016

The QD145, QD200 and QR12 series of optical encoders have  28 AWG conductors in the standard flying lead cable. This gauge of cable is excellent for tight bends and fitting in applications where space is a premium.  The conductors can easily handle the 250 mA max current requirement of the...

How to calculate pulses per degree for an incremental encoder

March 2, 2016

When using an Incremental Encoder, you often have to know how many pulses there are per degree of rotation. This is a very straightforward math problem. Pulses per Degree = Number of encoder pulses per rotation/Number of degrees in a circle For a 5000 Line count incremental rotary encoder we...

Cross-referencing RENCO Incremental Encoders

February 3, 2016

We have always been able to come up with a suitable replacement for Renco encoders, but our customers are making us aware that we need to point that out. For those who don’t know, Renco, after being absorbed by Heidenhain, made the decision to  eliminate much of their product line. ...

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