In
This Issue
• Readily
Available Ferrite Magnets
• "Ferrite-Friendly" Magnetic
Switches
• "Ferrite-Friendly"
Angle Sensors
• Parts in Stock
• Displacement Sensing (independent
paper)
Readily Available Ferrite Magnets
Recent shortages of heavy rare-earth magnets, such as neodymium, have engineers
scrambling to find alternative magnets, as well as sensors to detect them.
Fortunately, NVE has both.
We stock several popular ferrite
magnets, and we have a unique lineup of high-sensitivity magnetic sensors
ideal for use with inexpensive, readily-available ferrite magnets.
 "Ferrite-Friendly"
Magnetic Switches
NVE has a unique lineup of high-sensitivity (1 mT) magnetic switches ideal
for use with inexpensive, readily-available ferrite magnets.
Here’s the summary of our most popular 1 mT sensors:
Breakout Boards
 Available
0.8 x 0.4 inch (21 x 10 mm) 1
mT switch breakout boards have pre-soldered WLCSP sensors, 0.1" headers,
and 1 mm-pitch card-edge connectors.
 Business
Card Demonstration
A USB-powered smart business
card with an
ADT925-14E one-millitesla DFN4 TMR magnetic switch sensor shows how easily the
sensor can be activated.
An LED on the card shows when the sensor is on.
This video demonstrates the excellent operating latitude of these sensors with
ferrite magnets:
"Ferrite-Friendly"
Angle Sensors
NVE TMR angle sensors are ideal for use with readily-available, diametrically-magnetized
ferrite magnets. Unlike other angle sensors, these unique sensors work over a
wide range of magnetic fields to accommodate ferrite magnet variability, and they
work at much lower fields than conventional sensors.
 The
AAT006-10E is particularly
well-suited for use with ferrite magnets, with a robust 1.5 to 10 mT
operating field range.
The magnet can be oriented in a variety of ways, including off-axis.
Design Support
A breakout board and
Arduino Shield demonstration
are available (image at right).
This video demonstrates the wide airgap tolerance of one of our angle sensors
with a tiny ferrite magnet:
Plenty
of Parts in Stock
 NVE
is uniquely well-positioned in an era of semiconductor uncertainty with an in-house
fab, internal backend testing, and minimal reliance on imported materials. Our
sensors and isolators are in stock for immediate delivery.
And our prices are stable, even with average chip prices climbing 18% this year.
Independent Papers
Displacement Sensing
 Development
of Giant Magnetoresistance Sensor Application AB001-02 Series for Mass Measuring
Instrument Design,
JIPFRI, May 29, 2025.
Part Used:
AB001-02E GMR gradiometer
sensor.
Excerpt:
"The results show the sensitivity of the GMR sensor on mass measurement is
0.0816 Volt/Kg and has a measurement range of 0 - 4.3 Kg with a resolution of
100 g."
Download
pdf (Indonesian language) »
More Independent Papers » |
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