July 23, 2018
QM35 and QML35 Press Release on motioncontroltips.com The new QM35 and QML35 modular incremental optical encoders from Quantum Devices are high-performance, low-profile modular designed encoders. These encoder models are suited for high volume OEM applications and priced competitively for all size servo motors and other precision motion control positioning systems....
April 24, 2016
I received this e-mail from a potential customer who is trying to determine why he had a skewed encoder waveform. His name has been changed to protect his identity. Hi Jim, I have just come across your page on RPM calculation using an optical encoder and oscilloscope. I was keen...
April 18, 2016
As the resolution of optical encoders increases, the distance from sensor to disk decreases. In the incremental encoder industry, this distance is called the “Air Gap”. In the side view photo of an optical encoder above, the two red lines indicate the air gap between the sensor and disk in...
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...
March 29, 2016
I have been working on a project to automate a manual lathing operation for our incremental encoder/optical encoder line. To keep things simple, thumb switches allow the set point, along with some offsets for fine-tuning, to be entered. I am not completely finished with project, but in the video below...
March 16, 2016
The QR145, QR200 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...
March 9, 2016
I received a phone call the other day that caught me a bit off guard. A customer was asking what tolerance they need to have on their motor shaft for it to fit with one of our incremental encoders. I reflexively told the customer that we machine our shaft...
March 2, 2016
When using an incremental rotary 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 5,000 line count incremental encoder we...
February 24, 2016
Quantum Devices Inc. has a mounting option that allows for IP66 sealing of the QR145 Incremental Encoder. There are two o-rings in the clam shell design; one o-ring seals the encoder to the mounting surface (usually a motor) and the other o-ring seals the end bell housing that covers the...
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