What Is Transistor ?

The transistor is formed by connecting two P-N cells to the posterior poster of each other. The first transistor transistor was invented in 1951 by William Sakeley. Which was a point transistor. Over time, new transistors were discovered, to separate the new transistor from the old transistor, it is called the Bipolar junction transistor. Mainly it is the two p-n treaty diode, so it is also called double diode.

Type Of Transistor

P-N-P Transistor :-
In this, p-type semiconductor is composed of two segment (emitting and modulated) n-type semiconductor segment. In this, the current flows through the bass with the emitter.

DIDI

N-P-N Transistor:-
In this, the n-type is composed of two sections of the semiconductor (emitting and modulated) p-type semiconductor segment. It flows from current bass to the emitter

Use of Transistor in Mobile PCB: -

The transistor is used primarily to boost the power of incoming signals. That is, the work of amplification.
is used for switching, its switching power is higher than the normal switch.
The voltage regulator varies the changing of the voltage by fixing the value, which works on cpu en signal.
The transistor light section and the charging section are visible.
The voltage regulator found in the charging section is made up of transistor.

Terminal of Transistor:-

(1)Base (2)Collector (3)emitter

Multimeter se Testing:-

The transistor is used primarily to boost the power of incoming signals. That is, the work of amplification.
To check the transistor, two diodes coming into it are checked. Which is between E and B and between B and C.
Set multimeter to beep mode.
keep the red probe at E and black probe on B
This transistor is a P-N-P transistor when it comes to riding. The transistor is N-P-N transistor when the readings are not available.
When the readings are not available on both terminals, the transistor is bad and the beep is too short.

Know More

What Is Resistor ? And How Many Resistor Use In Mobile Phone

Reding comes on keeping the red probe on E (positive) and black probe on B (negative) and redding does not occur when changing the probe. So the transistor is called P-N-P transistor. Suppose p-n-p means positive-negative-positive, then the transistor's emitter will be positive, base negative, collector positive. So the current flows between the emitter and the base. Therefore, when placed on the red prob emitter (positive) and black prob base (negative) of the multimeter, it shows the transistor value, so we know that the transistor is p-n-p.

Redding comes on keeping the multimeter's red probe on B (positive) and black probe on E (negative) and redding does not occur when changing the probe. So the transistor is called N-P-N transistor. Suppose N-P-N means negative-positive-negative then the transistor emitter will be negative, base positive, collector negative. Hence the current flows between the emitter and the base. Therefore, when placed on the red prob base (positive) and black prob emmiter (negative) of the multimeter, it gives the transistor value. So we come to know that the transistor is n-p-n.