Che cos'è "Transistor Q1"?
What is a transistor?
transistor, semiconductor device for amplifying, controlling, and generating electrical signals. Transistors are the active components of integrated circuits, or “microchips,” which often contain billions of these minuscule devices etched into their shiny surfaces.What is a compound transistor pair?
The compound pair highlights many interesting technical aspects of transistor behavior, especially as the first transistor operates in the common emitter mode at a very low current. The basic motif is shown in Figure 1. Figure 1. A compound NPN, PNP transistor pair.What were the first commercial applications for transistors?
The first commercial applications for transistors were for hearing aids and “pocket” radios during the 1950s. With their small size and low power consumption, transistors were desirable substitutes for the vacuum tubes (known as “valves” in Great Britain) then used to amplify weak electrical signals and produce audible sounds.What are the potential switching speeds of transistors?
Similar applications of transistors occur in the complex switching circuits used throughout modern telecommunications systems. The potential switching speeds of these transistors now are hundreds of gigahertz, or more than 100 billion on-and-off cycles per second.
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