Analysis of Common Emitter Amplifier using h-parameters

Engineeering Projects
ce amplifier circuit

Analysis of Common Emitter Amplifier using H Parameter Figure 1(a) shows the circuit of a common emitter (CE) amplifier using self-bias and load resistor R0 capacitively coupled to the collector. Figure 1(b) gives the a.c. equivalent circuit. Here we have eliminated the biasing circuit consisting of R1, R2, Re, and Cz. The R1 – R2 combination is equivalent to resistance Rb (= R1 || R2) between base and ground. It is assumed that Rb is large in comparison with the input resistance of the amplifier between base and ground and…

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DIY Li-Fi Speaker | How to Design

Engineeering Projects
lifi speaker prototype

Here in the article I am going to show you “How to design DIY Li-Fi speaker” we are going to show you how to make Li-Fi speaker i.e. uses light to transfer data. This article consist of entire detail like design procedure, circuit diagram, and description. Introduction to Li-Fi (Light Fidelity) The term wireless has been gaining so much popularity in the recent years. Li-Fi is another block to growing platform. The term Li-Fi; Light Fidelity sounds somehow similar to Wi-Fi and they share a lot of common features. Both…

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h-parameter Model for Transistor

Engineeering Projects
ce amplifier configuration

Transistor static characteristics curves are nonlinear. But for small signal operation, the point of operation moves about the quiescent operating point over a small range. Then the transistor parameters may be considered to be constant over this small range of operation. Derivation of h-Parameter model for transistor To drive the h-parameter model for a transistor, we consider the basic CE amplifier circuit of figure 1. The variable iB, iC, vB (=vBE) and vC(vCE) represent the instantaneous total values of currents and voltages. The input current iB and output voltage vC…

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Universal Arduino IR Receiver Circuit

Engineeering Projects
author prototype ir receiver

The project Universal Arduino IR Receiver Circuit works with any IR remote thus can control any electronic or electrical appliance like T.V., Fan, AC, Lighting bulb etc. Infrared Remote control as you know were introduce much earlier in the seventies. These day must electric/electronics device comes with inbuild infrared control system. Various devices like T.V., fan, AC or even a lighting bulb came with the features like remote control. But every IR receiver circuit responds only to assigned frequency i.e. it works only on fixed assigned frequency. Thus, every IR…

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LED Matrix Display using Arduino

Engineeering Projects

Today, I am going to teach you how to make an LED matrix display using Arduino. Here we had designed a 7×5 LED matrix display but can be extended as per desire. If you are using Arduino uno board the number of rows can be extended up to 14 and the number of columns can be extended up to 6. This is because there are only 14 digital pins (D0 to D13) and 6 analog pins (A0 to A5). Thus, you can make a 14×6 Led matrix display in the…

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5 Band Audio Equalizer Circuit using LM833

Engineeering Projects
5 band audio equalizer circuit using lm833

Today in this article we are going to show you the circuit diagram and description of the 5 Band Audio Equalizer Circuit using LM833. We already control 8W + 8W Stereo with a graphic equalizer, but this time we come with 5 Band Audio Equalizer Circuit. First, let’s talk about what an equalizer is. 5 Band Audio Equalizer Circuits using LM833 Equalizer circuits are those circuits that are responsible to maintain a balance between the frequency components. The project 5 Band Audio Equalizer Circuit using LM833 divides the audio spectrum…

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Christmas Music and Decoration using Arduino

Engineeering Projects
component used in Christmas decoration

In this Christmas season I wanted to do some funny stuffs using arduino. Previously few years back I had made a project Christmas decoration and music using discrete components. Now I had come with funny easy and interesting project using arduino and few other easily available electronics components. The project posted here plays three different popular Christmas tone i.e. Jingle Bell Jingle Bell, wish you merry Christmas and Santa Claus is coming to town. The interest lies on the thing you have created with you owns. Definitely this project is…

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ATmega16 Based Voting Machine

Engineeering Projects
atmega16 based voting machine

Atmega16 based voting machine: Well, the key word; Corruption is everywhere. I believe it is what comes together with politics. Yes, here we present an attempt to sweep a dirt away from this system. The project is concerned with development of an electronic voting machine which is built around an AVR microcontroller, which help us to create a fair election process at least. Electronic voting machines (EVMs) have been a necessity in government elections. On comparison to traditional methods, this machine provides a far more secure voting environment and reliable…

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Common Emitter (CE) Amplifier | Operating Point

Engineeering Projects
current and voltage waveform of ce amplifier

The Operating Point of Common Emitter Amplifier From the study of transistor characteristics, we find that amplification by transistor amplifier is most linear when the transistor operates in its active region. Hence the operating point must be suitably placed in the middle of the active region by suitable selection of external energy associated biasing circuit. Circuit Description of Common Emitter (CE) Amplifier Figure 1 gives the basic circuit of CE amplifier using NPN transistor bias through use of resistor Rb. Here capacitor Cb1, acts as the coupling capacitor to couple the…

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Arduino based Bluetooth Controlled Car

Engineeering Projects
robot parts list

Today, we are going to show you how to make an Arduino-based Bluetooth Controlled Car. Previously we had already posted various types of robots like Arduino Gesture Controlled Robot, Dual Mode Robot, Arduino, and RF controlled Robot. The difference between previously posted robot projects and Arduino-based Bluetooth Controlled Car is, unlike others, that it does not require special types of control circuits. It can be controlled using any smartphone using the software. The best part of the project Arduino-based Bluetooth Controlled Car is you can wire it within an hour.…

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