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The Dell XPS 14 (9440) was released in early 2024 and is a 14.5" laptop between the Dell XPS 13 and the XPS 16. It has thinner bezels, a seamless touchpad, and edge-to-edge keyboard with a touch function row, it offers two 14.5" display options, 1920x1200 LCD, or 3200x2000 OLED display, both at a refresh rate of 120Hz.
When a turn-off negative voltage signal is applied to the MOSFET connected to the cathode, it turns off and transfers all the current away from the cathode (N-emitter of the NPN transistor in the thyristor) into the base gate via MOSFET connected to the gate of the thyristor. This stops regenerative latching process and results in a fast turn-off.
XPS physics - the photoelectric effect.. Because the energy of an X-ray with particular wavelength is known (for Al K α X-rays, E photon = 1486.7 eV), and because the emitted electrons' kinetic energies are measured, the electron binding energy of each of the emitted electrons can be determined by using the photoelectric effect equation,