With a 4k1 collector resistor and 16mA drive into the led, the chosen (read ‘cheapest on ebay’) 6N135 is supposed to beat 1.5μs for both turn on and turn off, with typical figures of 90ns and 800ns.

On November 6, the Kingdom of Morocco will mark the fiftieth anniversary of the Green March (Al-Massira Al-Khadrae), a national milestone ...

During his opening address at the Adipec 2025 conference, Dr Sultan Al Jaber, UAE Minister of Industry and Advanced Technology and Adnoc's managing director and group chief executive, summed up the ...

"It's a disposable pipette system. The clear tubes are glass or plastic with markings for the volume inside. The orange/red ball is a hollow, collapsible ball with a hole over the pipette tip. The ...