Author Archives: steve bush

Elastomer electrolyte to sort out lithium metal batteries?

Elastomer electrolytes might be the answer to safe lithium-metal batteries, according to researchers at the Georgia Institute of Technology. Batteries using lithium metal anodes rather than lithium ions promise high capacities, but a tendency to grow internal cell-shorting spike-like metal dendrites makes them a risky, or even unsafe, proposition if liquid electrolytes are used. Solid ...

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3A 5way IPx7 connector can absorb misalignment

Yokowo has developed a waterproof blade and receptacle connector with floating contacts to absorb mating misalignment, vibration or shock. Spring-loaded dual-beam contacts absorb contact displacement – 0.3mm laterally (left-right in the photo insert), for example. The base of the connector is ~22mm long (including small tags). Contacts are rated at 3A with 50mΩ contact resistance and a life ...

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860W quarter-brick dc-dc converter

Flex Power Modules has introduced a non-isolated regulated quarter-brick dc-dc converter rated at 860W continuous and 1,200W peak for <1s. Called BMR350, it is aimed at intermediate bus conversion for processors and asics. Input range is 40 – 60V (80V for 100ms) and the output is 12V at 100A maximum, adjustable from 8 to 13.2V. ...

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Tiny load switch controls 1A for wearables and IoT

Toshiba has launched tiny load switches for wearables and IoT that consume only 80pA quiescent current – the Electronics Weekly calculator makes that 300,000 years from a CR2030 coin cell. They come in the company’s 0.65mm x 0.65mm WCSP4G package that is only 0.45mm and can switch up to 1A (2A pulsed). On-resistance varies from 46mΩ ...

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LEM: ‘World’s most accurate current transducer’

LEM is claiming “unparalleled levels of accuracy” for its latest current transducer: 0.6ppm linearity and 10ppm maximum electrical offset, according to the data sheet, although “in-house tests have shown that the sensor can achieve linearity below 0.5ppm and offset of +/-5ppm”. Called IN 200-S, the sensor is rated at up to ±200A (dc or ac(rms), 300A ...

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Automotive precision 0402, 0603 and 0805 surface mount resistors

Vishay has extended its Automotive precision resistor range in 0402, 0603 and 0805 case sizes, which now rub up to 7.5MΩ with ±25ppm/K temperature resistance and ±0.1% tolerance. MCS 0402 AT, MCT 0603 AT and MCU 0805 AT offer values from 47Ω to 1 MΩ, 2MΩ and 7.5MΩ respectively. “They join the previously enhanced MCA ...

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Raspberry Pi Pico MCU becomes the brains of 3D printers

Big Tree Tech, a respected Chinese make of 3d printer parts, has adopted Raspberry Pi’s RP2040 microcontroller to miniaturise a 3D printer controller board. Called ‘SKR Pico V1.0’, the controller has a second link with Raspberry Pi, as it directly mates with a Raspberry Pi 4 or Raspberry Pi Zero 2, used to run Klipper, ...

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Nexeon pulls in $80m towards silicon anodes for Li-ion cells

Oxfordshire-based silicon anode research company Nexeon has landed a $80m investment from a consortium including SKC, SJL Partners, BNW Investment and Kiwoom Private Equity. “SKC, a $5bn market cap company, is one of Korea’s leading advanced materials companies, with a strategic focus on rechargeable battery and semiconductor materials,” according to Nexeon. “Through this transaction, Nexeon ...

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Tough compact connectors for USB 3, HDMI, Ethernet and more

For higher pin-count busses, Fischer has added a larger connector to its MiniMax Series of miniature rugged high-reliability connectors. The connector has a 14mm diameter body (Fischer size 10) and comes in two versions so far: 12 signal and power contacts offering USB 3.2 Gen 2 (10Gbit/s, 1m) and up to 8A, for high-speed intercom ...

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