Allegro MicroSystems had introduced 1MHz bandwidth current sensors that can measure hundreds of amps – the first fruit of its acquisition of Crocus Technologies. The technology is tunneling magnetoresistance, and the sensors are intended to sit over the current-carrying PCB track to be measured. Output is a voltage linearly proportional to the current, responding within 300ns. There are two base ...
National Grid has energised its 2.5km 275kV power tunnel between Hurst substation and Crayford, one of the transmission circuits in the 32.5km LPT2 route across south London. “The previous cables between Hurst and Crayford were reaching the end of their operational life, having been commissioned in 1967 and having served London reliably for decades,” according to National Grid, which explained: ...
Light made on CMOS chips using quantum tunnelling could be used for optical interconnect and chemical sensing
Peratech has borrowed £1.2m investment from Finance Yorkshire’s Equity Linked Fund will to “build new laboratory facilities and secure new contracts”, said the North Yorkshire, firm. The company develops switches and sensors based on ‘quantum tunnelling composites’. Invented by CTO David Lussey, QTCs are force-sensitive variable resistance elastomers, whose unstressed resistance is almost insulating. “We don’t need the money now ...
Metal loaded elastomer has six decades of resistance range
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