diode valve मीनिंग इन हिंदी

The recent ( 2012 ) resurgence of interest among audiophiles and recording studios in old valve audio gear such as guitar amplifiers and home audio systems has provided a market for the legacy consumer diode valves.
In a refinement of the diode-clamped converter, the so-called " active neutral-point clamped " converter, the clamping diode valves are replaced by IGBT valves, giving additional controllability.
Another type of three-level converter, used in some adjustable-speed drives but never in HVDC, replaces the clamping diode valves by a separate, isolated, " flying " capacitor connected between the one-quarter and three-quarter points.
Edison similarly discovered and wrote up Thermionic emission, the basis for diode vacuum tubes, but scientists of the 1880s rejected it as merely charged bits of carbon coming off the filament, and decades later Fleming used the same tubes with improvements to invent the diode valve or vacuum tube, with a better physical explanation, after the discovery of the electron by others circa 1897.