Transistors Functions
Transistors have the function of amplifying and switching electrical signals. Transistors play a crucial role in modern electronic devices, making them more compact and efficient. In the case of radio, the extremely weak electronic signals transmitted through the air are magnified (amplified) before playing through speakers. This is the amplification action of a transistor. A transistor also acts as a switch, operating only when a predetermined signal arrives. An IC or LSI is a collection of transistors that provides the basic function of a transistor. Transistor as a switch Describes switching operation when the Emitter is grounded. Once a voltage (approx. 0.7V or more) is applied to the Base terminal of the transistor, a small current will flow, causing the transistor to turn ON and current to flow between the Collector and Emitter. The emitter-base junction is forward-biased in this state, allowing the base current to control the larger currents at the emitter and collector. Conversely, when the applied voltage to the Base is low (less than 0.7V), the Collector and Emitter are OFF and no current flows between them. Switching...
