ELECTRICAL ENCODERS

Technology:

• capacitive operating principle 
• rotary and linear versions available
• sensor plus electronics on own PCB
• incremental and absolute versions available 
• 1Vpp output like in optical encoders (coarse and fine signal, selectable by control signal) 

Advantages of Electric Encoder Technology: 

• no glass disc, no light source or receiver, therefore high reliability
• not sensitive against temperature changes (-40 to +125°C)
• vacuum versions possible (e.g. for space applications)
• immune against electrical and magnetic fields 
• not sensitive for dust, humidity, shock and vibration
• hollow shaft wit no bearing, direct mount to customer shaft
• „holographic“ measuring principle, therefore not sensitive to misalignment
• much more accurate than resolver, typical accuracy better than +/-0.02°; resolution 4 to 22 Bit
• low power
• short, typical 10mm
• big hollow shaft possible
• scalable and suited for mass production 

Electric Encoders are suited for many demanding applications including aerospace and defense, automotive, medical, robotics etc.

Some useful application notes: