# Electronics Engineering

## Low Frequency Response of BJT Amplifier

Low Frequency Response of BJT Amplifier: For analysis, we will consider the loaded voltage-divider BJT bias configuration. But the results can be applied to any configuration. For the network shown in Fig. 15.14 the capacitors Cin, Cout and CE will determine the low frequency response of BJT Amplifier. Now we will examine the impact of each …

## Millers Theorem and its Equivalent Circuit

Millers Theorem and its Equivalent Circuit: Millers theorem – Consider an arbitrary circuit shown in Fig. 15.13(a). As part of a larger network that is not shown, we have isolated two circuit nodes, labelled 1 and 2, between which an impedance Z is connected. Nodes 1 and 2 are also connected to other parts of …

## What is Frequency Response of an Amplifier?

What is Frequency Response of an Amplifier? The voltage gain of an amplifier varies with signal frequency due to the effect of variations in circuit capacitive reactance with signal frequency on the output voltage. The curve drawn between the voltage gain and signal frequency of an amplifier is known as the frequency response. If the …

## Noise in Amplifiers and its Types

Noise in Amplifiers and its Types: Noise in Amplifiers – Noise is any kind of unwanted signal that is not related to the input. Any electronic component produces a certain amount of noise. When these components are assembled to build a device or circuit and if a signal is supplied to it, the noise produced …

## Explain Distortion in Amplifier? | Types of Amplifier Distortion

Explain Distortion in Amplifier? | Types of Amplifier Distortion: Under ideal conditions, amplified output signal must have exactly the same waveform as the input signal. But in practical amplifiers, this ideal condition is never achieved. Some changes in the waveform may take place in addition to the increase in the amplitude. Such a change is …

## Classification of Amplifiers

Classification of Amplifiers: In the Classification of Amplifiers, the transistor amplifiers may be classified in several ways such as on the basis of transistor configuration used, active device used, output, frequency range of operation, input, the number of stages used, coupling methods, mode of operation (biasing conditions) and on the basis of bandwidth. Based on …

## Phase Reversal in Single Stage Transistor Amplifier

Phase Reversal in Single Stage Transistor Amplifier: In a common emitter configuration, the output voltage increases in the negative direction when the input signal increases in the positive direction and vice versa. This is called Phase Reversal in Single Stage Transistor Amplifier and causes a phase difference of 180° between the input signal voltage Vin …

## What is Single Stage Transistor Amplifier? – Circuit Diagram and its Workings

What is Single Stage Transistor Amplifier? – Circuit Diagram and its Workings When only one transistor with associated circuit is used for increasing the strength of a weak signal, the circuit is known as single stage transistor amplifier. Single Stage Transistor Amplifier Practical Circuit: A practical circuit of a single stage transistor amplifier in CE …

## What is MOSFET Handling?

What is MOSFET Handling? What is MOSFET Handling? – MOSFET requires very careful handling particularly when out of circuit. In circuit, a MOSFET is as rugged as any other solid-state device of similar construction and size. MOSFET has an ultra thin silicon dioxide layer between the channel and the gate. Because the insulating layer is …

## Complementary Metal Oxide Semiconductor (CMOS)

Complementary Metal Oxide Semiconductor (CMOS): With active load switching, the current drain with a low output is approximately equal to ID(sat). This may cause a problem with battery operated equipment. One way to reduce the current drain of a digital circuit is with complementary MOS (CMOS). Complementary metal oxide semiconductor devices are chips in which …