The cat-whisker detector is commonly described as the first solid-state device, discovered in 1874, patented in the early 1900s, and used in various experimental radios through the development of radio technology at that time.
Its not a "modern transistor design", but its solid state, its through a semiconductor... and its one step away from reliably amplifying. Its kinda funny that the physics to understand this thing were developed after its invention...
The cat-whisker detector is commonly described as the first solid-state device, discovered in 1874, patented in the early 1900s, and used in various experimental radios through the development of radio technology at that time.
Its not a "modern transistor design", but its solid state, its through a semiconductor... and its one step away from reliably amplifying. Its kinda funny that the physics to understand this thing were developed after its invention...