This document discusses building a voltage amplifier circuit with a transistor. It explains that a voltage amplifier increases a small input voltage to a higher output voltage. The circuit uses common electronic components like an NPN transistor, resistors, and capacitors. It operates by biasing the transistor to allow a small voltage change at the base to produce a larger change at the collector. The document provides the specific components needed and discusses how to select their values to achieve the desired gain without distortion.

2. Voltage Amplifier

3. Introduction :-
In this project, we will show how to build a voltage amplifier with a
transistor.
A voltage amplifier circuit is a circuit that amplifies the input voltage to a
higher voltage. So, for example, if we input 1V into the circuit, we can
get 10V as output if we set the circuit for a gain of 10.
Voltage amplifiers, many times, are built with op amp circuits.
However, with a transistor and the correct biasing, we can produce the
same voltage amplification effect of an op amp circuit.
Therefore, in this case, a voltage amplifier is built with all simple,
discrete components.

4. We will show all the components that are necessary to build this circuit
as well as how to choose the values of these components. We will also
show the maximum gain that a transistor can get based on the values we
choose without clipping. So we'll go through all the components of this
circuit.
This circuit works as a great voltage amplifier when a more precise and
sophisticated op ap IC isn't available or a simple transistor is preferred.

5. Circuit Design

6. Visual cicuit:-

7. Equipment :-
2N3904 NPN transistor
1KΩ resistor
1.1KΩ resistor
4.7KΩ resistor
470Ω resistor
17μF electrolytic capacitor
10μF electrolytic capacitor

8. working Principle:-
In voltage amplifier the NPN transistor are used
in the three main components base ,collecter ,and emitor and they t
he silicon impurity.

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Amplifier Gain
The introduction to the amplifier gain can be said to be the rel
ationship that exists between the signal measured at the outp
ut with the signal measured at the input. There are three differ
ent kinds of amplifier gain which can be measured and these
are: Voltage Gain ( Av ), Current Gain ( Ai ) and Power Gain (
Ap ) depending upon the quantity being measured with exam
ples of these different types of gains are given below.
Av = input voltage/output voltage