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Do all NPN transistors work the same?
Would there be any issue in using any other NPN transistor? Others are set up for a particular application even though they are all part of the same family of components (capacitors, resistors, inductors, transistors, diodes). So yes transistors are interchangeable, if the type (npn/pnp) and required specs match.
What is the difference between NPN transistors?
The main difference between the NPN and PNP transistor is, an NPN transistor turns on when the current flows through the base of the transistor. A PNP transistor turns ON, when there is no current at the base of the transistor. In this transistor, the current flows from the emitter (E) to the collector (C).
What does NPN stand for?
Negative, Positive, Negative
NPN stands for Negative, Positive, Negative. Also known as sinking.
What is the purpose of a NPN transistor?
Another common application for NPN transistors is to use them as an amplifier, in which a small increase in the input voltage induces a large change in the output voltage. NPN transistors are used for this purpose in almost all phones electronic devices in which sound amplification or reproduction is required.
Why do we use NPN transistor?
NPN transistors are used when you want to sink a current; i.e. current flows into the collector. PNP transistors are used when you want to source a current; i.e current flows out of the collector. As a result of this, NPN transistors usually have their emitter connected to the low side of the supply.
How do NPN and PNP transistors operate?
The operation of the PNP and NPN transistors mainly utilizes holes and electrons. These transistors can be used as amplifiers, switches and oscillators. In PNP transistor, the majority charge carriers are holes, where in NPN the majority charge carriers are electrons.
What are the working principles of transistor?
Working Principle of Transistors. When no voltage is applied across the transistor, diffusion of free electrons across the junctions produces two depletion layers . For each depletion layer, the barrier potential is about 0.7 V at 25°C for a silicon transistor and 0.3 V for a germanium transistor.