The basic idea of the USB drive is quite simple. When we connect it up to the USB port, an inverting DC/DC converter runs and charges capacitors to -110V. When the voltage is reached, the DC/DC is switched off. At the same time, the filed transistor opens. It is used to apply the -110V to signal lines of the USB interface. When the voltage on capacitors increases to -7V, the transistor closes and the DC/DC starts. The loop runs till everything possible is broken down. Those familiar with the electronics have already guessed why we use negative voltage here. I‘ll explain to others that negative voltage is easier to commutate, as we need the N-channel field resistor, which, unlike the P-channel one, can have larger current for the same dimensions.

I’m not going to talk to you about the application area, but a former colleague says that it’s like an atomic bomb: cool to have, but can not be applied.

Arriving at work, you find a USB drive on your table. What would you do?

insert the USB drive into the port to see the content

throw it in the trash

include:  1*USBkiller

                      2*U disk shell sets

                       1*  tester set (including the floor, cover, screws, screwdriver)

note! High voltage, power must be off after standing for 2 minutes, until the release of more than electricity, and then carefully openings on the motherboard!

note! High voltage, power must be off after standing for 2 minutes, until the release of more than electricity, and then carefully openings on the motherboard!

note! High voltage, power must be off after standing for 2 minutes, until the release of more than electricity, and then carefully openings on the motherboard!

After more than 20 seconds off electricity to about 100V, 70 seconds after the drop to less than 30V! You can touch the board!