Electrical/Electronics

Electric Field Quantitative Measurement System and Method

This technology could be used for medical imaging, security applications, weather prediction, and nondestructive evaluation of composites and insulators.NASA Langley Research Center’s Electric Field Imaging (EFI) system is the only noncontact method capable of quantitatively measuring the magnitude and direction of electrostatic fields in near- and far-field applications. Based on low-cost, commercially available components, the EFI system uses measurement of very-low-current, human-safe electric fields to construct a three-dimensional image of objects and people based on their dielectric properties. This platform technology, originally developed for measurement of the efficacy of electrical shielding around cables, could be optimized for a variety of applications, including medical imaging, security and detection, weather and natural disaster prediction, and nondestructive evaluation of composites and insulators. The EFI system has the potential to offer a lower-cost, portable, and safer alternative to the imaging systems currently used in these applications.

Posted in: Briefs, Electronics & Computers

Read More >>

Auto-Balancing Series-Stacked Input DC-DC Converter

This invention could enable practical, reliable, and efficient power conversion in high-voltage DC systems without power level limitation.ADC-DC converter that can operate from a high input voltage is needed for future high-power space applications. However, the selection of space-qualified, high-voltage transistors and filter capacitors for such a converter are very limited. The available high-voltage components have lower performance than lower-voltage components. One possible solution to this problem is connecting in series the inputs of multiple converters to lower the input voltage at the individual converter inputs. However, because of component tolerances, performance degradation, and transient events, this can result in an unbalanced voltage distribution throughout the various inputs. Excessive voltage on any of the stacked converters can damage components and cause a catastrophic failure. A circuit that could inherently balance the voltage between the inputs of multiple low-voltage DCDC converters would have better performance and reliability.

Posted in: Briefs, Electronics & Computers

Read More >>

Larger-Area Integrated Electrical Metallization Dielectric Structures with Stress-Managed Unit Cells for Extreme- Environment Semiconductor Electronics Chips

Electronic circuits that operate in high temperatures are used in automobiles, airplanes, oil drilling operations, and many other applications.The use of patterned multiple layers of thin films of metal and dielectric to form integrated circuit interconnections of transistors and/or form on-chip circuit capacitors is well known to those skilled in the art of semiconductor microelectronic fabrication. Because differing layers of thin film materials have different physical and thermal expansion properties, it is also well known that stress is inherently present in these multilayer film structures on a microelectronic chip. The amount of stress changes with temperature and as a function of lateral feature size/area across the chip. When stress anywhere within a patterned metal film feature becomes critically large (i.e., the “yield stress” is exceeded), the metal film can physically crack, buckle, or delaminate from other layers, which usually damages/fails the intended electrical operation of the microelectronic circuit.

Posted in: Briefs, Electronics & Computers

Read More >>

CoaXPress Frame Grabber

Responding to the need to create a cost-effective, high-speed interface to fully leverage CXP cameras, BitFlow (Woburn, MA) has introduced the Aon-CXP single link CoaXPress frame grabber. The Aon is powerful enough to support camera speeds up to 6.25 Gigabits/second, which is almost twice as fast as USB3 and over six times the speed of current offerings of GigE Vision. While capturing video at those speeds, it is simultaneously sending control commands, triggers and up to 13 W of power over a single piece of 75 Ohm coaxial cable.To learn more, click here

Posted in: Products, Data Acquisition, Board-Level Electronics, Computers, Electronics & Computers, Imaging, Video

Read More >>

Edge-Connect SBC

ADL Embedded Solutions Inc. (San Diego, CA) has announced its compact ADLE3800SEC SBC with Edge-Connect. This ultra-compact 75mm x 75mm form factor is a full-featured, standalone SBC for rugged, embedded applications. The ADLE3800SEC is ideal for rugged, extended temperature intelligent systems with stringent size, weight, and power (SWAP) requirements. It boasts a wide thermal junction temperature (Tj) range (-40°C to +85°C), wide input voltage (20-30 VDC), DisplayPort, USB2.0, USB3.0 and two GLAN ports with support for DirectX 11, Open GL 4.0, and full HD video playback. The Edge-Connect architecture allows for added I/O expansion and connectors in a variety of baseboard/breakout board configurations (flat, vertical, odd-shapes, etc.).

Posted in: Products, Board-Level Electronics, Computers, Electronics, Electronics & Computers

Read More >>

MP3 Audio DSP Microcontroller

VLSI Solution (Tampere, Finland) has introduced the VS1010 MP3 Audio DSP Microcontroller, a highly integrated all-in-one MP3 player system-on-a-chip. VS1010's I/O system includes support for Hi-speed USB (both host and device operations are supported), SD/SDHC cards, 2xSPI, MEMS microphones, S/PDIF, I2S, 2xUART, RTC clock, SAR inputs, a PWM output, GPIOs. It also contains a 24-bit stereo DAC and an integrated earphone amplifier with a dynamic range of 100 dB(A). VS1010 runs VLSI Solution's VSOS operating system. For those who want to program the VS1010, VLSI Solution's Integrated Development Environment VSIDE is available for free.

Posted in: Products, Electronics & Computers, Semiconductors & ICs

Read More >>

Optical Encoders

MICROMO (Clearwater, FL) announced the FAULHABER high-precision IER3 and IERS3 optical encoders. Both encoders deliver two-channel quadrature signals and an additional index signal. They can position a FAULHABER micro DC motor or brushless DC servomotor with a typical accuracy of 0.1° to 0.3°. The encoders combine the LED, photodetectors, analysis unit, and interpolation levels on one chip. They lengthen motors by 15.5 to 18.5 mm. Both encoders are also available with line drivers that generate complementary output signals and make data transmission resistant to electrical interference, especially in encoders with long connecting cables. The IER3 encoder has a resolution of up to 10,000 lines per revolution, and achieves an angular resolution of 0.009° with the evaluation of 40,000 edges per revolution. The IERS3-500 provides resolutions of 250 and 500 lines per revolution.

Posted in: Products, Electronics & Computers, Motors & Drives, Optical Components, Optics

Read More >>

The U.S. Government does not endorse any commercial product, process, or activity identified on this web site.