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Electronics Project Book


www.hobbyelectronics.in
How to use the book -
Know the basics—To start working with electronics circuits ad projects, one should be very well aware about all basic electronic
components like Resistor, capacitors, transitors etc. It is important to know how the components behave when they are connected in a
closed circuitfor example—The purpose of a capacitor is to store charge and once charged capacitors cut off current supply through them. It
is also important to understand what voltages should be applied to different components and the direction these components should be
connected. For example—capacitors have a maximum possible permisable voltage rating along with polarity written on them , for resistors
polarity doesnt matter. For most of electronics components manufactured today a voltage of around 5 volt is sufficient.
Testing circuits—After a circuit is assembled the level of excitement rises to test it right away, but it is important to check the connections
and start with correct voltage for a short time just to check if circuit is working correctly , If not you should disconnect battery as soon as
possible because the reason of no output of circuit can be wrong connections and if its a case then it can damage the components of circuit.
Words of caution—Throughout this book I have mentioned the warnings whereever nessecary with a warning icon on the left side.
Warning text are written where it is very essential to inform a hobbyist about the possibilities of harming the circuit components.
For example in The LEDs Circuit section , It is important to use a resistor to prevent LED to get destryed by 4.8 or more voltage.
Ideas—In many circuits I have mentioned the ideas which were worth mentioning, There are some circuits which can be turned into
useful projects . For eample the simple LED lights project can be used as a bedroom lamp.
Finally a project is worthless if it isnt portable and useful. And what makes a circuit useful is actually the cabinet. Which hides all the tiny
sensitive componnets from user. In all professional systems circuits are first assembled in a printed circuit board (PCB) and then it is fitted
in a cabinet, exposing the only needed controls to user. Though PCBs provide good platform to assemble circuit, they are not a good testing
platform. There are problems working with PCB that you cant take out assemble components easily for replacements apart from this long
contact with Soldering iron may damage sensitve components. Breadborad provides a perfect platform for testing circuits so we recommend
using breadboard . For cabinet enclosure www.hobbyelectronics.com - MY Kit provdes a good option but you can also go for any other box
if you not using MY Kit.
For more free circuits and projects please connect to www.hobbyelectronics.in and click on blog section.
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