What is the use of BC557 transistor?

BC557 is a general-purpose transistor, used like an amplifier or a switch in electronic circuits. Its hFE ratings of this transistor range from 125 to 800 to make the transistor ideal by using like an amplifier within electronic circuits like audio signal amplification.

What is PNP transistor?

The PNP transistor is a type of transistor in which one n-type material is doped with two p-type materials. It is a device that is controlled by the current. Both the emitter and collector currents were controlled by the small amount of base current. Two crystal diodes are connected back-to-back in the PNP transistor.

What is the function of BC547?

The BC547 is a NPN transistor meaning when power is applied to the base (control pin) it will flow from the collector to the emitter. Typically NPN transistors are used to “switch ground” on a device, meaning, they are placed after the load in a circuit.

How does BC547 work as an amplifier?

The BC547 transistor is an NPN transistor. A transistor is nothing but the transfer of resistance which is used for amplifying the current. A small current of the base terminal of this transistor will control the large current of emitter and base terminals. The maximum gain current of this transistor is 800A.

How PNP transistor works as a switch?

PNP Transistor as a Switch PNP transistor works same as NPN for a switching operation, but the current flows from the base. For the PNP transistor, the base terminal is always negatively biased with respect to the emitter. In this switching, base current flows when the base voltage is more negative.

What is the function of D882 transistor?

The D882 is a general-purpose transistor that belongs to the NPN transistor family. It comes with collector current 5A and is mainly used for switching and amplification purpose. The amplification factor is 60-400. This factor indicates the amount of current this device can amplify.