NVE Sensor and Isolator News
    December 2015 Electrifying  News  From  NVE
In This Issue
Gear-Tooth Sensor Demo

Three-Wire Digital Gear-Tooth Sensor

Quick Links
Sensor Selector Guide

Isolator Selector Guide

Online Store

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New Products
AKL-Series Gear-Tooth Demonstrator

6 kV Isolators
Basic Isolated CAN Transceiver

Wide-Body Isolated CAN Transceiver Evaluation Board

In the News
NVE sensors were used in a sensing system for blast-induced traumatic brain injury, as reported in the journal Nature.
More >

New Videos
Gear Tooth Sensor Demonstrator
Angle-Sensor Demonstrator
Cylinder Position Sensor Demonstration

Happy Holidays
NVE will be closed Thursday and Friday, December 24 and 25, and Friday, January 1.
We wish our readers the best this holiday season, and a successful 2016.
Sensor Demonstrator
AKL-Series gear-tooth sensors are a simple, flexible rotational speed sensing solution. A new, easy-to-use demonstrator lets engineers try out a simulated rotational sensing system.
Key AKL sensor features are:
  • Large airgap
  • 50% duty cycle
  • DC (zero speed) operation
  • Precise spacing between sensor elements
  • Excellent temperature and voltage performance
  • Small, low-profile surface mount package
AKL demonstrators are in stock for immediate delivery.
Demonstrator Manual >
Buy AKL Demonstrator

Application Corner
Three-Wire Digital Gear-Tooth Sensor
AKL Three-Wire Interface Reference Circuit
Three-Wire Digital Gear-Tooth Sensor

AKL-Series Gear-Tooth Sensors have 4-to-8 mA two-wire interfaces. The interface can be directly used in certain applications, but some application require a three-wire configuration.

In the simple circuit above, when the current is 4 mA, the voltage across the 100 ohm resistor is 0.4 V, not enough to turn on the transistor. With 8 mA, the transistor turns on. Note that the supply voltage must be at least 5.2 V to provide the sensorís 4.5 V minimum Vcc.

We maintain factory inventory of three popular AKL-Series sensors:
Part Number
(click for details)
AKL001-12E 300 µm
AKL002-12E 500 µm
AKL003-12E 1000 µm
The best spacing depends on the geometry of the gear and the sensor system. As a starting point, the sensor element spacing can be one-fourth of the gear pitch.
Buy AKL Sensors
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