Electronics world

SOLAR ENERGY Introduction:  Sun is the major source of energy that our earth receivesonly 174 petawatts energy of it. The outer core temperature of the sun would be around 5000 degree Celsius whereas our earth receives few percent of it.  It is an important source of  renewable energy  and its technologies are broadly characterized as either  passive solar  or  active solar  depending on the way they capture and distribute solar energy or convert it into  solar power . Active solar techniques include the use of  photo-voltaic systems ,  concentrated solar power  and  solar water heating  to harness the energy. Passive solar techniques include orienting a building to the Sun, selecting materials with favorable  thermal mass  or light dispersing properties, and designing spaces that  naturally circulate air . Basic  definition : Solar energy   is radiant light and heat from the...

 Full Wave Bridge Rectifier With Capacitor Filter The voltage obtained across the load resistor of the full-wave bridge rectifier described above has a large amount of ripple. A capacitor filter may be added to smooth-en the ripple in the output, as shown below. Figure 21: Full wave Bridge rectifier with capacitor filter The rectifier circuits discussed above can be used to charge batteries and to convert AC voltages into constant DC voltages. Full-wave and bridge rectifier are more commonly used than half-wave rectifier.

Introduction Arduino  is an open-source platform used for building electronics projects. Arduino consists of both a physical programmable circuit board (often referred to as a  microcontroller ) and a piece of  software , or IDE (Integrated Development Environment) that runs on your computer, used to write and upload computer code to the physical board. The Arduino platform has become quite popular with people just starting out with electronics, and for good reason. Unlike most previous programmable circuit boards, the Arduino does not need a separate piece of hardware (called a programmer) in order to load new code onto the board – you can simply use a USB cable. Additionally, the Arduino IDE uses a simplified version of C++, making it easier to learn to program. Finally, Arduino provides a standard form factor that breaks out the functions of the micro-controller into a more accessible package. This is an Arduino Uno The Uno is one of the more popular boards...

AC-Powered Led Lamps Without rectifiers Usually, LED lamps require rectifier when connected to the AC mains power supply. Electrical isolation of the LED lamps from the mains is also required in most cases. But rectifiers create a switching noise and also add to their cost. Presented here is a simple circuit for LED lamps that doesn’t require the use of rectifiers. There is a wide range of low-power mains transformers available with one or more secondary voltages like 2.5 Vrms (3.5 Vpeak), 3 Vrms (4.2 Vpeak), 3.3 Vrms (4.7 Vpeak), 4.5 Vrms (6.4 Vpeak), 5 Vrms (7.1 Vpeak), 6 Vrms (8.5 Vpeak), 6.3 Vrms (8.9 Vpeak) and with power rating from 1.3 VA up to 12 VA. The primary current of these transformers is relatively low—around 15 to 80 mA—and, when needed, can be limited with resistors without producing a lot of heat. Most of these transformers are PCB-mounted and easy to use. On the other hand, LED lamps with power rating of 1 W to 10 W are good enough to produce light for your w...

Following are the list of best books for robot building for begineers. 1.  Robot Building For Begineers  by David Cook 2. Intermediate Robot Building  by David Cook click on the links to download the books its free of cost

Introduction to MATLAB Goal The goal of this tutorial is to give a brief introduction to the mathematical software MATLAB. After completing the worksheet you should know how to start MATLAB, how to use the elementary functions in MATLAB and how to use MATLAB to plot functions. What is MATLAB? MATLAB is widely used in all areas of applied mathematics, in education and research at universities, and in the industry. MATLAB stands for MATrix LABoratory and the software is built up around vectors and matrices. This makes the software particularly useful for linear algebra but MATLAB is also a great tool for solving algebraic and differential equations and for numerical integration. MATLAB has powerful graphic tools and can produce nice pictures in both 2D and 3D. It is also a programming language, and is one of the easiest programming languages for writing mathematical programs. MATLAB also has some tool boxes useful for signal processing, image processing, optimization, etc. How ...