This room temperature method, instead takes the easily grown graphene-on-copper and in a single-step (they claim) etch and transfer the graphene circuitry to nearly any substrate, including the flexible polymer substrates of the future. Their trick: cutting the circuit patterns into a simple shadow mask. “Desired micro-patterns are designed by a computer-aided design [CAD] software, […]
Graphene Patterned at Room Temp Read More »
Finding a way to deposit vertical dielectric barriers has allowed Litecool of Sheffield to make dramatic cut in LED thermal resistance – from 1.25 to 0.5°C/W is one case – see diagram. Dielectric layers are essential to separate electrical conductors but, with a few notable exceptions like diamond, introduce thermal barriers. Spreading heat before it
Sheffield firm slashes LED thermal resistance Read More »
There’s now a simple solution for overcoming the incompatibilities between the USB3 I/O channels commonly used in today’s PCs and the digital media interfaces, such as High-Definition media Interface (HDMI) and Serial digital interface (SDI), favoured by audio/video equipment. Until now, differences in their frame formats and signaling mechanisms made it difficult for HD video
FPGA-based USB3 video bridge can repair the PC-HDMI disconnect Read More »
6 Digit serial display project has been designed around CAT4016 IC from ON semi. The CAT4016 is a 16 channel constant current driver for LED billboard and other general display applications. LED channel currents are programmed together via an external RSET resistor. Low output voltage operation on the LED channels as low as 0.4 V
6 Digit Serial Display Driver with CAT4016 Read More »
Experienced audio DIYers are familiar with monolithic linear regulators like the 78xx series and the LM317. Here’s a simplified block diagram of a standard linear regulator, from National Semiconductor’s Application Note 1148: Let’s see… We have an op-amp, a couple of transistors, a voltage reference, and a few resistors. Can we build a linear regulator
Op-Amp Based Linear Regulators Read More »
Introduction A few months ago I purchased a Philips PM6674 frequency counter on eBay. It’s an older 9 digit counter with two channels that has a maximum input frequency of 550MHz. The design feels dated compared to more modern counters, such as my Agilent 53131A. However, it is still a fully functional piece of lab
Fluke/Philips PM66xx Frequency Counter OCXO Upgrade Read More »
Zytronic has added an ARM Cortex A4-based touch controller called the ZXY110. It runs at 168MHz enabling Zytronic’s self-capacitive p-cap (PCT) sensors to gain in responsiveness and precision. The processor is accompanied by two ASICs which help minimise controller footprint, while maximising touch detection performance, even through cover glass more than 10mm thick. The ZXY110
Zytronix launches ARM Cortex A4 touch controller Read More »
University of California, Irvine researchers have invented nanowire-based battery material that can be recharged hundreds of thousands of times, moving us closer to a battery that would never require replacement. The breakthrough work could lead to commercial batteries with greatly lengthened lifespans for computers, smartphones, appliances, cars and spacecraft. Scientists have long sought to use
Making better batteries a reality Read More »
Arbitrary-beam headlights are another step closer, claims a German consortium. Cars already exist in which cameras shape the headlight beam around other road users – maximising light on the road while minimising dazzle. These adaptive headlamps are based on forward-facing cameras and shaped mechanical shutters within the headlight. With the advent of LEDs, headlamp developers
Germany takes a step to imaging LED matrix headlamps Read More »
Features Low Quiescent Current: 8μA Operating, 6μA Shutdown Withstands Surge Voltage Up to the MOSFET Limit Wide Operating Voltage Range: 4V to 72V Overcurrent Protection Selectable Internal 31.5V/50V or Adjustable Gate Clamp Voltage (Table 1) Reverse Input Protection to –60V Adjustable Turn-On Threshold Adjustable Fault Timer with MOSFET Stress Acceleration Controls N-Channel MOSFET Latchoff and Retry Options (Table
LTC4380 – Low Quiescent Current Surge Stopper Read More »
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