Author Archives: steve bush

3D printed conductors inside 3D printed solids offer little resistance

Engineers at Rutgers University are claiming 11.8μΩ.cm for conductors printed inside plastic structures, created by printing a novel silver ink and exposing it to high intensity light. The ink has both silver nano-wires and silver nano-spheres within it. These are fused using ‘intense pulsed light sintering’ with a xenon lamp, that is brief enough not to ...

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1.3kV isolation for automotive and robotics current sensor

Allegro is claiming isolation up to 1.3kV dc (650V reinforced) for a series of current sensors that work up 400A (ac and dc) and respond in 2.5µs for fast over-current detection. Safety-critical applications such as vehicles and robotics are the target. ACS772 is a 200kHz bandwidth automotive grade current sensor for 50 to 400A, with 100μΩ ...

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Inorganic perovkite solar cell lasts longer

Perovskite solar cells can be made in open air and “last for months rather than days with a solar conversion efficiency slightly above 12%” according to Rice University if some of the Pb is replaced with indium. The switch also reduces defects that skew the cell’s bandgap. “From our perspective, this is something new and ...

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Laser hacks hacks smart-speaker from 100m, opens house doors

University researchers have remotely gained control of a home smart speaker using a laser. The hack worked at a range of 110m, and would have been further if the team had had more space. All that was needed was a 5mW laser (little more than pointer-power) and a telescope (actually a telephoto lens). 60mW was sufficient ...

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ADC offers multi-microphone beam-forming to ease host processor load

Texas Instruments is aiming at beam-forming microphones with four-channel ADC that can connect to four analogue microphones or eight digital microphones, or a combination of the two. “Smart home systems face challenges with far-field audio capture,” according to TI. “In today’s systems, a limited number of microphones and restricted signal processing capability make it difficult ...

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