MEDER electronic, Inc. MMS - 2.8 mm Implantable MEMS Reed Sensors Need No Power
A new, ultra-small magnetically actuated reed sensor that requires no power and is designed for switching CMOS gates and other low power signal switching devices such as implantable medical pacemakers and insulin pumps is being introduced by MEDER electronic.
MEDER MMS Reed Sensors are magnetically actuated on/off sensors that feature no power draw and measure only 2.8 mm (L) [0.110”] by 2.05 mm (W) [0.080”] by 1.2 mm (H) [0.047"]. Designed for switching low power devices where size is critical, they are available with magnetic sensitivity ranges from 1 to 4 millitesla and are tested to withstand up to 15,000 G's shock from any direction. Choose from 2 surface mount lead designs in a SPST-NO (Form A) version: lead design 1 (straight cut axial lead), and lead design 2 (Gull Wing).
Manufactured using semiconductor wafer technology, MEDER MMS Reed Sensors are supplied in tape and reel according to IEC 286/part 3, suitable for auto pick and place equipment. These SPST reed sensors have a switching voltage of 3 VDC max., with 109 insulation resistance across the contacts. These reed sensors are EDS sensitive and RoHS compliant. Available today at Digi-Key Corporation.
Nanotec Launches Stepper Motors with Magnetic 24 V Encoder And An Optional Brake
Nanotec Electronic, US, Inc. has introduced new models AS5918-EMN24 and AS5918-EMN24B, expanding its product portfolio by adding IP-rated stepper motors with an integrated, magnetic 24 V encoder and, on the EMN24B model, an integrated brake.
The two new AS5918-EMN24 and AS5918-EMN24B models from the renowned stepper motor manufacturer distinguish themselves chiefly with their magnetic 24V encoder. The encoder was developed by Nanotec for integration into IP-protected motors. Magnetic encoders are less sensitive to vibrations, dust, dirt and humidity. The encoder generates 1,024 increments per revolution. Because of the 24 V connection at the encoder, the motors are well-suited for direct control via a PLC or a higher-level control system. Of course, they can be controlled using Nanotec control systems as well.
The option with a safety brake (1 Nm of holding torque) is typically used wherever vertical loads have to be kept in place even during a power failure or an emergency stop in order to prevent damage to persons or property. This applies to Z-axes and other safety-critical applications.
Featuring a holding torque of 1.98 Nm, the AS5918-EMN24 and AS5918-EMN24B stepper motors are viable alternatives to servomotors with gearboxes in Torque Mode and Closed Loop at low speeds. This is because they are more compact and have greater energy efficiency - whether in mechanical engineering devices or other systems where operating in a harsh environment and precise positioning are crucial.
The motors have a high degree of electromagnetic compatibility and feature M12 and M8 connections. With a flange dimension of 56 mm (NEMA 23), they are compatible with all Nanotec stepper motors and thus can be used in mixed environments.
Cordless Magnetic Drill Press from Metabo Features Permanent Rare Earth Magnet
Metabo Corp. has introduced a cordless magnetic drill press. The MAG 28 LTX utilizes a 25.2 V Li-Ion battery to power the tool. A permanent rare earth magnet, requiring no energy from the battery, allows the use of the mag drill in remote and previously inaccessible environments.
The unique rare earth magnet offers up to 2,500 lbs of holding force, which can be adjusted for precise positioning when drilling on vertical, horizontal and sloped surfaces. The drill has a prism-shaped magnetic base that enables users to work on pipe as well, further increasing the flexibility of this drill throughout steel construction applications. A safety strap is supplied for working on overhead or vertical surfaces.
This first-to-market cordless electromagnetic drill press can be used with annular cutters, spiral drills and countersinks, featuring a maximum drilling diameter of 1.25 inches with an annular cutter and 0.5 inch with a spiral drill. The tool offers a maximum drilling depth of 2 inches.
The tool's magnetic stand has a maximum stroke of 6.3125 inches. The 2-speed tool boasts 380 or 680 no load revolutions per minute and is designed with a dual-level, permanently lubricated gearbox for speed and torque optimization.
The MAG 28 LTX features electronic thermal overload protection and jam protection to help ensure the longevity of the 25.2 V motor. A safety cut-out protects the operators in the event a battery is inserted with the machine in the on position. An integrated gravity coolant container with through-the-spindle coolant feed is also included.
The cordless tool's 25.2 V, 3.0 Ah Li-Ion battery pack charges in a 15 minute charger. Metabo's air-cooled charging technology cools the battery pack during charging to shorten the charging process by up to 30 percent, diminishing tool down-time and boosting useable tool life per charge. A spare battery pack can also be stored in the drill's stand. The battery packs and charger are further protected by a three-year warranty. In addition, the MAG 28 LTX is warranted for three-years.
A Weldon 0.75-inch tool holder, ejector pin, chuck adaptor and geared chuck, chuck key, MT 2 drift key, safety strap, allen key and two 25.2 V, 3.0 Ah Li-Ion battery packs come standard with Metabo's MAG 28 LTX.
Infolytica Releases MagNet and ThermNet v7.3
Infolytica Corp. has released the newest versions of its simulation suite of software: MagNet, ElecNet, ThermNet and OptiNet.
Obtaining an accurate prediction of an electric motor’s performance is no trivial task, particularly when you wish to couple the effects of heating and motion. It can be tedious to setup these types of problems for simulation. MagNet and ThermNet share the same model file and run a two-way coupled electromagnetic and thermal simulation, making it both easy to use and accurate.
Several substantial updates have been made to ThermNet, increasing the software’s accuracy and capability to account for cooling options. Global results for temperature, heat capacity, heat flow and heat source are now reported. New boundary conditions, improved modeling of touching surfaces, anisotropic and composite materials, stranded coils and enhanced convection options work in tandem to improve the simulation of motors, generators or any other electromechanical device.
MagNet v7.3 introduces freezing the operating points of the BH property throughout a component for use in different simulations. One example of the application of this new feature is the study of small signals in the presence of a large DC offset.
Material properties can be overridden on an element by element basis in order to account for other phenomena or processes affecting the performance of a device. An example of this application is when the material properties of certain regions of a component vary due to a manufacturing process.
3D coil modeling, particular highly complex geometries, is made easier with an updated extension to MagNet which supports all common types of windings.
General improvements have also been made to third party file interoperability, specifically CATIA V5 and Inventor 2012, as well as the utility which detects and corrects faults with imported models.
MagNet, ElecNet ThermNet and OptiNet v7.3 can now be downloaded for PC’s running Microsoft Windows XP, Vista and 7.
New 14-Bit Magnetic Encoder from austriamicrosystems Makes Accurate Angle Measurement For Microcontroller Users
austriamicrosystems has released the AS5048, a 14-bit magnetic encoder IC offering new features that make it easier to achieve accurate, reliable angle measurements in microcontroller-based applications.
The AS5048, which provides a PWM output and either an SPI or I2C interface, supplies absolute angle measurements to a host microcontroller. The application’s mechanical design does not need to allow for precise initial alignment of the sensor IC and the two-pole magnet it is paired with: instead, the zero position is programmed into the AS5048 magnetic encoder one time only on assembly, via a simple SPI or I2C command, with no requirement for a special programming device.
The AS5048 is also highly tolerant of misalignment between the sensor IC and its paired magnet and of variations in the air gap, as well as of variations in temperature from -40°C to 150°C.
The new AS5048 magnetic rotary encoder offers more precise measurement than previous members of austriamicrosystems’ family of magnetic rotary encoders. Its 14-bit measurement engine provides for resolution down to 0.0219°. With linearization and averaging implemented in the host microcontroller, it can deliver angle measurements accurate to 0.05°.
The new AS5048 also takes advantage of proprietary manufacturing processes developed at austriamicrosystems’ wafer fab in Graz, Austria that enable the production of extremely sensitive analog circuits. The IC’s high sensitivity means that it can be paired with low-cost magnet types such as ferrites, operating reliably in magnetic fields as weak as 30 mT.
Like austriamicrosystems’ existing magnetic encoders, this new device rejects interference from stray magnetic fields, because of the unique design of the IC’s integrated Hall sensors and signal processing circuitry. This makes the AS5048 well suited for use in electrically and magnetically noisy industrial and medical environments.
An internal voltage regulator enables the AS5048 to operate from either a 3.3 V or 5 V supply. It is available in a 14-pin TSSOP package. Multiple devices can be daisy-chained to produce a serial data read-out.
“austriamicrosystems is a long-standing supplier of magnetic encoders to thousands of customers, and feedback from these customers on our existing devices has helped us to make the new AS5048 a very attractive product,” said Alfred Binder, marketing manager at austriamicrosystems. “It is accurate and robust like all of austriamicrosystems’ magnetic encoders, easy to assemble in an end product, and now even easier to implement in microcontroller-based designs.”
New Versatile FE-SEM Series for Sub-Nanometer Imaging and Analysis of Nanostructures and Magnetic Samples
JEOL has launched a new series of field emission scanning electron microscopes (FE-SEM) that offer expanded imaging and analysis capabilities customizable to performance requirements. The JEOL JSM-7100F series offers sub-1 nm imaging capabilities and analytical characterization at the sub-100 nm scale, accomplished through the combination of large beam currents with a small probe size at any accelerating voltage.
Designed for the budget-conscious lab, the JSM-7100F model is a versatile, analytical field emission SEM that offers a new level of expanded performance. Through the unique 'in-lens field emission gun', the SEM delivers ≥ 200 nA of beam current to the sample. An aperture angle control lens (ACL) automatically optimizes both small probe current spot size for high resolution imaging and spot shape for high beam current, high resolution microanalysis, while a beam deceleration mode curtails charging on nonconductive specimens such as ceramics, semiconductors and polymers.
For advanced high resolution capabilities, the JSM-7100FT model features a newly redesigned hybrid lens and through-the lens detectors with energy filter. The improved electron optics design of this SEM column enables high resolution imaging of nanostructures and specimen surface details for any material type, including magnetic samples. With the integration of in-the-lens acceleration and deceleration of the electron beam, low kV aberrations are reduced, yielding higher resolution at the lowest accelerating voltages. Additionally, JEOL's proven beam deceleration mode (GB Mode) decreases charging while imaging non-conductive specimens, improves spot size at low kV, and enhances surface topography.
This new series of Field Emission SEMs offers increased versatility for multiple analytical techniques and imaging and analysis of non-conductive samples. Each microscope model features a turbo molecular pump (TMP) and a rapid specimen exchange airlock to assure a clean vacuum environment is always maintained.
The optional LV function (up to 300 Pa) offers additional versatility to both JSM-7100F and JSM-7100FT. The LV function is fully controlled through the microscope user interface and allows all LV orifices to be retracted without breaking vacuum for unrestricted low magnification imaging and maximum beam current (200 nA) in high vacuum. The LV system is equipped with a solid-state BSE detector.
The JSM-7100F series is equipped with a large specimen chamber that accommodates a wide variety of detectors and accessories simultaneously and without compromising the performance of one another, including: multiple EDS, WDS, STEM, BSE, CL and IR camera. The system can also be equipped with a variety of sub stages including tensile, heating and cooling stages for in situ experimentation.