As the current in this region is maximum, and the voltage that is present in the collector is minimum. In the region of saturation, the transistor gets the maximum current when IB is applied to it and this maximum amount of current is obtained at the IC collector. At the cut-off region the transistors remain totally OFF and at the saturation region the transistors remain ON fully. If the transistor is utilized as a switch, the 2 operating regions that are formed are the cut-off region and the saturation region. The signals of smaller amplitude are fed to the amplifier which in turn enhances it to derive the output large signals. ![]() ![]() The transistor enhances the amplitude of the input signal. A transistor functions as a switch as it drives back and forth between the cut-off regions and saturation regions. (2020), in another case, transistors are used in the form of an amplifier that enhances the magnitude of the output signal as it continues to operate in an active region. Transistors can act as a device that will be used in the form of a switch especially when it functions in the cut-off region, that is, the open switch and the case of the saturation region, that is, the closed switch. Transistors are generally used in multiple sections that help devise various applications. All these aspects accumulate to provide a service in multiple regions for example transistor as an amplifier is useful in the functionality of the optic fibers and is also useful in amplification of radio signals and other wireless communications. The transistor can act as a device, switch and amplifier. ![]() In the transistor that is working in the cutoff state, both the collector base and the emitter-base junctions are reverse biased. The transistor is the kind of service that works in an active region, the transistor acts as an amplifier and in case it acts as a switch it tends to perform in various cutoff and saturation regions.
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