| Secciones |
|---|
| |
| | Foros Electrónica |
|---|
| |
| | Alguien dijo ... |
|---|
El subdesarrollo no es la antesala del desarrollo, sino su contraparte necesaria.
Darcy Ribeiro(1922-1997)
Antropólogo, escritor y político brasileño | | Contacto |
|---|
|
| | Fixed-Frequency CCFL Controller with Synchronization and Phase-Shift
Features for Multilamp Applications |
SUNNYVALE, CA -Maxim Integrated Products (NASDAQ: MXIM)
introduces the MAX8729, a fully integrated controller optimized to drive multiple cold-cathode fluorescent lamps
(CCFL) used in LCD monitor and TV applications. The MAX8729 drives multiple lamps by using a half-bridge inverter
consisting of two external n-channel power MOSFETs. Its half-bridge topology minimizes the component count, while
providing near sinusoidal drive waveforms over the entire input range. The MAX8729 operates in resonant mode during
striking, and switches over to fixed-frequency operation after the lamps are lit. This unique feature ensures
reliable striking under all conditions and reduces transformer stress.
|
| | Leer la noticia completa | Martes, 30 Agosto, 2005 - 12:50 | |
| 8 x 8 Matrix Graphic LED Drivers with 4-Wire Serial Interface Offload
Display Tasks from a Microcontroller for Message-Board Applications |
SUNNYVALE,
CA-August 29, 2005-Maxim Integrated Products (NASDAQ: MXIM) introduces the MAX6960-MAX6963 compact cathode-row
display drivers that interface microprocessors to 8 x 8 dot- matrix red, green, and yellow (R, G, Y) LED displays
through a high-speed 4-wire serial interface. The MAX6960-MAX6963 are feature-rich LED drivers that offload the
display tasks from the microprocessor, simplifying design, reducing software overhead, and improving time-to-market
for message board, gaming machine and audio/video equipment applications.
|
| | Leer la noticia completa | Martes, 30 Agosto, 2005 - 12:47 | |
| Low-Power, High-Voltage Detection/Protection Circuits Operate Up to
72V for High-Voltage Transient Systems |
SUNNYVALE, CA -Maxim Integrated Products introduces the
MAX6495-MAX6499 overvoltage protection circuits that operate as a switch controller to either disconnect or limit
the output voltage to a load during an overvoltage condition. The circuits turn off an external n-channel MOSFET
with an internal 100mA pulldown current when the monitored voltage exceeds its overvoltage threshold. These
low-power devices consume only 20 microamps of quiescent current and operate from 5.5V to 72V, making them suitable
for automotive, industrial, and server applications.
|
| | Leer la noticia completa | Martes, 30 Agosto, 2005 - 12:44 | |
| | | NI Releases 10 New Express VIs and Highest-Performance PCI Board for
Sound and Vibration Applications | National Instruments today announced
the release of a 24-bit data acquisition and generation module, the NI PCI-4461, marking the highest-performance
dynamic signal acquisition (DSA) board on the PCI bus with a 118 dB dynamic range. The release also includes the
National Instruments LabVIEW Sound and Vibration Toolkit Version 4, with 10 new Express VIs for simplified
application development. These new products add to the comprehensive NI hardware and software tools for sound and
vibration applications, including PXI, PCI and USB measurement devices and powerful, easy-to-use analysis
software.
|
| | Leer la noticia completa | Martes, 30 Agosto, 2005 - 12:35 | |
|
| NI Introduces Industry’s First Products for Laptop Control of
PXI/CompactPCI |
Engineers now can directly control a
PXI/CompactPCI system from a laptop computer using new National Instruments ExpressCard MXI and PCMCIA CardBus
interfaces. This new capability is ideal for portable and mobile applications, such as in-vehicle data logging,
machine condition monitoring and field tests including RF spectral monitoring, in a variety of industries including
automotive and military/aerospace.
|
| | Leer la noticia completa | Martes, 30 Agosto, 2005 - 12:33 | |
| | | New NI M Series Data Acquisition Board Lowers Connectivity Costs by 80
Percent | |
Original equipment manufacturers (OEMs) and engineers
interested in low-cost I/O connectivity and custom cabling now can take advantage of 80 percent lower connectivity
costs with the new National Instruments PCI-6221 (37-Pin) multifunction data acquisition (DAQ) board. While the
PCI-6221 (37-Pin) DAQ board includes the technologies featured on other low-cost M Series DAQ devices, including the
NI-STC 2 system controller, the new board uses a 37-pin D-Sub connector for commercially available I/O connectivity.
Because basic shielding connectivity solutions for 37-pin devices are now available at prices four to five times
lower than 68-pin devices, engineers can take advantage of low-cost connectivity while integrating high-quality NI
data acquisition boards.
. |
| | Leer la noticia completa | Martes, 30 Agosto, 2005 - 12:32 | |
|
| | | Low-Cost National Instruments Data Acquisition Boards Deliver
Simultaneous- Sampling Rates up to 3 MS/s on Desktop Computers |
National
Instruments today announced four new simultaneous-sampling S Series data acquisition (DAQ) devices for the PCI bus,
raising the performance of PC-based instrumentation with simultaneous-sampling rates up to 3 MS/s. The NI PCI-6133,
NI PCI-6132, NI PCI-6123 and NI PCI-6122 boards offer high-density, low-cost options ideal for general-purpose data
acquisition and automated test, ultrasonics, ballistics, acoustics, high-energy physics and radar applications.
.
|
| | Leer la noticia completa | Martes, 30 Agosto, 2005 - 12:28 | |
|
| National Instruments Drives Data Acquisition Innovation with
Industry’s First PCI Express Multifunction DAQ Devices |
National Instruments today released the industry’s first PC-based multifunction data acquisition (DAQ) devices
for PCI Express. The new NI PCIe-6251 and NI PCIe-6259 DAQ devices combine the high-performance PCI Express bus with
the technology advancements of National Instruments M Series DAQ to offer engineers and scientists fast analog and
digital I/O with the dedicated per-slot bandwidth of PCI Express. The new devices feature up to 32 analog channels
with 16 bit, 1.25 MS/s sampling speed and 10 MHz digital I/O on up to 32 lines.
|
| | Leer la noticia completa | Martes, 30 Agosto, 2005 - 12:25 | |
| |
|
| |
