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1. niconiconi (niconiconi@cybre.space)'s status on Saturday, 22-Jan-2022 06:09:20 UTC niconiconi

   (New, Pre-production Preview, November 2021) ISOUSB211 - Low emissions, high/full/low speed isolated USB repeater https://www.ti.com/product/ISOUSB211

   This is absolutely phenomenal. Texas Instruments just made a galvanic isolation ASIC for 480 Mbps (not 12 Mbps) USB 2.0 that you can actually buy. Finally this problem is solved at last. #electronics #usb

   • niconiconi (niconiconi@cybre.space)'s status on Saturday, 22-Jan-2022 06:09:17 UTC niconiconi

     in reply to

     Pre-production preview chips from TI have just arrived. #electronics #usb

   • niconiconi (niconiconi@cybre.space)'s status on Saturday, 22-Jan-2022 06:09:17 UTC niconiconi

     in reply to

     1000 volts over USB.

     Santa Claes 🇸🇪🇭🇰🎅 likes this.
   • niconiconi (niconiconi@cybre.space)'s status on Saturday, 22-Jan-2022 06:09:18 UTC niconiconi

     in reply to

     Mirror, mirror on the wall, who has the highest breakdown voltage of them all? #electronics #usb

   • niconiconi (niconiconi@cybre.space)'s status on Saturday, 22-Jan-2022 06:09:19 UTC niconiconi

     in reply to

     I ordered the pre-production prototype version of TI's high-speed USB isolation chips as soon as I got the news. My order has just shipped today! :blobcataww: Time to design a development board. #electronics #usb

   • niconiconi (niconiconi@cybre.space)'s status on Saturday, 22-Jan-2022 06:09:19 UTC niconiconi

     in reply to

     > isolation barrier capacitance, input to output: 1 pF
     wow, that's some serious galvanic isolation. #electronics

   • niconiconi (niconiconi@cybre.space)'s status on Tuesday, 25-Jan-2022 05:06:15 UTC niconiconi

     in reply to

     I put a 50 Ω load on the USB killer. At first it kept pulsing continuously for 30 seconds or so and stopped. Now it only generates one or two pulses into 50 Ω each time. Also, when the load is removed, the total pulsing time to a high-impedance load has also degraded from 20 seconds to 10 seconds...

     Has this USB Killer just killed itself for good? :blobcatgiggle: #electronics

   • niconiconi (niconiconi@cybre.space)'s status on Tuesday, 25-Jan-2022 05:06:15 UTC niconiconi

     in reply to

     Curiously, each time the USB killer discharges, there's a loud "BANG" sound. A Gas Discharge Tube is used as the trigger it seems. It's kind of ironic, a GDT is normally used to protect a device from high voltage destruction, not to create it... #electronics

   • niconiconi (niconiconi@cybre.space)'s status on Tuesday, 25-Jan-2022 05:06:16 UTC niconiconi

     in reply to

     USB Killer waveform captured - 4 kHz inverse sawtooth wave, 622 ns rise time, 172 volts AC peak-to-peak. The sawtooth wave itself is riding on a 138 volts DC bias, giving a total peak voltage of 310 volts AC + DC. The DC bias decreases as the stored energy goes down, the pulse stops after 20 seconds.

     Unlike the original version, this particular variant uses a positive, not negative surge, and also adds a huge DC bias to the pulse. Its designer must have spent much time on improving its destructiveness. And curiously, it attacks only D-, not D+ data line, not sure if it's a manufacturing defect, or an intentional attempt to concentrate energy on a single line. #electronics

   • niconiconi (niconiconi@cybre.space)'s status on Tuesday, 25-Jan-2022 05:06:17 UTC niconiconi

     in reply to

     * State-of-the-art microprocessor SoC built using the 7 nm node, one of the most complex process ever invented by humans.
     ------
     * A capacitor charged to 300 volts.

     Who would win?

   • niconiconi (niconiconi@cybre.space)'s status on Tuesday, 25-Jan-2022 05:06:17 UTC niconiconi

     in reply to

     The last overvoltage protector candidate has arrived. Time to send 300 volts to each part and see which one blows up first... #electronics

   • niconiconi (niconiconi@cybre.space)'s status on Tuesday, 25-Jan-2022 05:06:18 UTC niconiconi

     in reply to

     USB Killer ordered, I'm going to unironically use it as a test device on my 1000 volts port isolator... #electronics