Modular Optical Encoder Comparison

August 29, 2019

Quantum Devices recently released a technical comparison of our QM35 and QML35 modular optical encoders: Download Printer-Friendly Version How the QM35 and QML35 Stack up Against the Competition Quantum Devices QM35 and QML35 optical encoders are high performance, low profile bearingless encoders ideal for high volume OEM applications and priced...

Miniature Rotary Encoder Boasts High Resolution and Built-In Brushless DC Motor Commutation

July 29, 2019

Featured in CISION/PRWeb Quantum Devices, Inc. is announcing a new step forward in miniaturization of commutating/incremental, optical encoder technology. The new QM22 series of incremental encoders offers a super compact 22mm diameter and a 12.4 mm thickness. Ideal for high volume OEM applications and fits on a NEMA 11 BLDC...

What is a Transmissive Rotary Encoder?

July 1, 2019

A transmissive rotary encoder, also known as a shaft encoder, is an optical, electromechanical device that is used to measure and control rotational motion in a very broad range of industries and applications. Internal sensors detect interruptions in a light source and send corresponding analog or digital signals to system...

Expanded Bore Options for HR12 Optical Encoder

January 3, 2019

As outlined in a previous post, our HR12 optical encoder is a popular choice for HEDS replacement. We also have found that the HR12 serves as a great HEDM replacement. Our HR12 rotary encoder boasts a wide range of line count options from 24 to 20,000 PPR as well as many...

Incremental Encoder Line Card

September 19, 2018

Quantum Devices offers a full range of transmissive incremental encoders. Our rotary encoders are used in industrial and commercial motion control, including medical equipment, industrial automation, and automated guided vehicles (AGV). Our full incremental encoder line card is now available online. This is a helpful resource for comparing the configuration options available...

QD145 Incremental Encoder IP-66 Sealing Option

February 24, 2016

Quantum Devices Inc. has a mounting option that allows for IP-66 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...

Understanding Options on the QDH20 Industrial Rotary Encoder.

November 20, 2013

The QDH20 is an IP66 sealed encoder made for the rugged duty of an industrial application.  Due to the huge array of configuration options, this optical encoder has over 200,000  possible ways that it can be configured. While this is certainly an advantage to an end user that may be...

Better Edge Determination for Rotary Encoders.

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...

Reduce electrical noise in rotary incremental encoders with termination resistors

June 10, 2013

Since most electronics are set up to have high input impedance, in some situations the addition of a loading or “termination” resistor can help to reduce interference from electrical noise. This can be of particular help when implementing an incremental encoder where there is a long cable run.  If the...

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