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About Quantum Devices

• Optical encoder applications
  • CNC machining
  • Servo motors
  • Medical/lab equipment
  • AGVs

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• Employment Opportunities

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ISO 9001:2015 Certificate of Registration – Certificate Number 22025130

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Products

• Incremental Optical Rotary Encoders
  • Model HR12 Rotary Encoder
  • Model JR12 Rotary Encoder
  • Model LP12 Rotary Encoder
  • Model QDH20 Rotary Encoder
  • Model QM22 Rotary Encoder
  • Model QM35 Rotary Encoder
  • Model QM35 EZ-Comm Rotary Encoder
  • Model QML35 Rotary Encoder
  • Model QML35 EZ-Comm Rotary Encoder
  • Model QR12 Rotary Encoder
  • Model QR145 Rotary Encoder
  • Model QR200 Rotary Encoder
• QC201 Commutation Indicator
  • QC201 Spec Sheet
• OPTOLAB / Line Drivers
  • OL7272 SOIC-16 Differential Line Driver
  • OL2068 TSSOP-20 Differential Line Driver
• Photodiodes

Encoder Online Store

• Buy online: QM35 Optical Rotary Encoder
• Buy online: QML35 Optical Rotary Encoder
• Buy online: QM35 EZ-Comm Optical Rotary Encoder
• Custom Cables

Optical Rotary Encoder Resources

• 3D Models
  • Model HR12 Rotary Encoder
  • Model JR12 Rotary Encoder
  • Model LP12 Rotary Encoder
  • Model QDH20 Rotary Encoder
  • Model QM22 Rotary Encoder
  • Model QM35 Rotary Encoder
  • Model QML35 Rotary Encoder
  • Model QR12 Rotary Encoder
  • Model QR145 Rotary Encoder
  • Model QR200 Rotary Encoder
• Brushless Direct Current (BLDC) Motor Commutation Made Easy
• Rotary Encoder Installation Manuals
  • Model LP12 Rotary Encoder
  • Model QM22 Rotary Encoder
  • Model QM22 Rotary Encoder with Pilot Mounting Option
  • Model QM35 Rotary Encoder with 1.280″ Bolt Circle
  • Model QM35 Rotary Encoder with 1.812″ Bolt Circle
  • Model QM35 EZ-Comm Rotary Encoder
  • Model QML35 Rotary Encoder with 1.280″ Bolt Circle
  • Model QML35 Rotary Encoder with 1.812″ Bolt Circle
  • Model QML35 EZ-Comm Rotary Encoder
  • Model QR12 Rotary Encoder
  • Model QR145 Rotary Encoder
  • Model QR145 Rotary Encoder with IP66 Housing
  • Model QR200 Rotary Encoder
• Rotary Encoder Spec Sheets
  • Model HR12 Rotary Encoder Spec Sheet
  • Model JR12 Rotary Encoder Spec Sheet
  • Model LP12 Rotary Encoder Spec Sheet
  • Model QDH20 Rotary Encoder Spec Sheet
  • Model QM22 Rotary Encoder Spec Sheet
  • Model QM35 Rotary Encoder Spec Sheet
  • Model QM35 EZ-Comm Rotary Encoder Spec Sheet
  • Model QML35 Rotary Encoder Spec Sheet
  • Model QML35 EZ-Comm Rotary Encoder Spec Sheet
  • Model QR12 Rotary Encoder Spec Sheet
  • Model QR145 Rotary Encoder Spec Sheet
  • Model QR200 Rotary Encoder Spec Sheet
• EZ Encoder Facts
  • What is a Transmissive Rotary Encoder?
  • Modular Optical Encoder Comparison
• Rotary Encoder Line Cards
  • Encoder Line Card
• Optical Encoder Basics: What is an Optical Encoder?
• Incremental Encoder Basics: How Incremental Encoders Work
• Rotary Encoder Basics: Types, Uses & Customization
• Photodiode Resources
  • QDI Photodiode Facts 1: Silicon Photodiodes – Modes of Operation and Characteristics
  • QDI Photodiode Facts 2: Custom Silicon Photodiodes

Blog

• Heidenhain Encoder Replacement
• Interview with Encoder Manufacturing Process Engineer
• QML35 Rotary Encoder Replaces RENCO RCML 15
• Custom Optical Encoders for OEMs
• Quantum Devices Commutating Encoder Product Delivers for OEM Medical Application
• QM22 Encoder Small in Size Yet Sports Big Commutation Device
• Quantum Devices Introduces Highly Robust Encoder
• Incremental Encoders for Research and Development and Prototyping
• What is Meant by Rotary Incremental Encoder Index Pulse “Gating”?
• QM35 EZ-Comm Installation Demo
• QM35 & QML35 Installation Demo
• Quantum Devices Celebrates 30 Years of US Made Incremental Encoders
• Coronavirus: Avoid Encoder Supply Chain Disruption – Find Replacements Quickly
• Very High-Resolution Application Solutions with QR12 and LP12 Sine/Cosine Incremental Encoder Output
• Miniature Rotary Encoders with Built-In Commutation
• Incremental Rotary Encoders for Automated Guided Vehicle (AGV) Control
• Programmable Rotary Encoder
• Information the Encoder Supplier Needs to Make a Selection
• Modular Optical Encoder Comparison
• Miniature Rotary Encoder Boasts High Resolution and Built-In Brushless DC Motor Commutation
• What is a Transmissive Rotary Encoder?
• Expanded Bore Options for HR12 Optical Encoder
• Incremental Encoder Line Card
• Low Profile Rotary Encoders
• Motion Control Tips Press Release
• Troubleshooting Encoder RPM Calculation using Oscilloscope
• Air Gap in High Resolution Optical Encoders
• Incremental Encoder Engineer Interview
• Incremental Encoder Lathe Automation
• Cable Length Considerations with Incremental Encoders
• QD145 Incremental Encoder Shaft Tolerance
• How to Calculate Pulses per Degree for an Incremental Encoder
• QD145 Incremental Encoder IP-66 Sealing Option
• Quantum Devices Interface Cable for the QDH20
• Help Picking the Resolution of an Incremental Encoder
• Cross-Referencing RENCO Incremental Encoders for Replacement
• Encoder vs Potentiometer
• The Lost Optical Encoder Demo Box
• Finding the RPM of an Optical Encoder Using an Oscilloscope
• Why do My Optical Encoder Signals Look this Way?
• Why Can’t I see My Optical Encoder Output Signals?
• Finding the Index Pulse of an Incremental Encoder
• What’s the Difference Between a Brushless Motor with a Commutating Encoder and a Brush Motor?
• Finding the Index on an Incremental Encoder with a DMM
• Quantum Devices Optical Encoder Black/White Wire
• Optical Encoder Waveform Triggering
• Inverted Flex Mount for QD145 Optical Encoder
• Understanding Incremental Encoder Signals
• Gray Code for Rotary Incremental Encoders
• Interfacing a 5 Volt Incremental Encoder to 12 Volts
• Build an Incremental Encoder Quick Tester
• Using an Optical Encoder to Show RPM on a PLC
• Using an Optical Encoder to Measure Angles
• Optical Encoder Pulse Counting with a PLC
• Ladder Logic to Decode Direction from an Optical Encoder
• Optical Encoder Incremental Signal Measurement
• How to Time Optical Encoder Commutation Channels to a BLDC Motor
• Why Use an Optical Quadrature Encoder for a Motor Encoder?
• Understanding Options on the QDH20 Industrial Rotary Encoder
• Better Edge Determination for Rotary Encoders
• E-Mail on Creating a Post Quad Encoder Signal
• Reduce Electrical Noise in Rotary Incremental Encoders with Termination Resistors
• Interlaced Sensor Technology in Rotary Incremental Encoders
• The Robust QD-H20 IP66 Industrial Rotary Encoder
• Choosing the Resolution of a Rotary Incremental Encoder
• The HR12 HEDS Replacement Optical Encoder
• What is Hysteresis and How is it Used in Optical Encoders?
• Temperature Effects on Optical Encoders
• Bearing Encoder vs Modular Encoder – Making the Right Choice
• Calculating Output Frequency for Rotary Encoders
• Interfacing to 26C31 Line Drivers in Quantum Devices, Inc. Rotary Encoders
• Preferred Wiring Methods for Optical Encoders