PCM | Pulse Code Modulation Important Formulas

Pulse code modulation is used to convertor samples sample analog signal to digital signal.

1.      Quantization error = m(t) – m_q(t)

2.    Quantization error  ≤ S/2

3.     Step size = (V_H – V_L)/m

                 =  (V_H – V_L)/2ⁿ

Channel Capacity | Information Theory | Definitions Formulas

Information theory and channel capacity theory plays vital role in communication engineering.

Communication system performs is limited by

1.      Available signal power

Common Emitter π & T- Model Equivalents

COMMON EMITTER HYBRID – π MODEL

                           

Analog Electronic Circuits | Analog Circuits Basics

Analog circuits: An analog circuit is a circuit with continuous, variable signal (i.e. an analog signal) as resist or opposed to a digital circuit where a signal must be one of two discrete levels. Analog circuits within electrical equipment can convey/ carries information through changes in the current, voltage, (or) frequency.

Series Resonance | Series RLC Resonance Circuit

Introduction:

                   At resonance the impedance of the circuit is real i.e. means purely resistive only. This occurs because the reactance of inductor and capacitor at resonance are equal but oppositive sign and cancel out each other.

        In this topic we will see what is resonance and resonance types i.e. series resonance, parallel resonance.

And also we will discuss from important formulas of this resonance.

GATE ECE on Transistor's Practice Test - 2

  1.    A Bipolar Transistor is Operating in the active region with a collector current of 1mA. Assuming that the β of the transistor is 100 and the thermal Voltage (V_t) is 25mV,the trans conductance(g_m) and the input resistance (r_π) of the transistor in the common emitter Configuration, are