Lets get quickly started into this. I will list below the basic things that are needed. Managed to get these stuff from a local electronics shop. We require the following basic things to get started
Power source:
This is the most primary requirement. I was looking for something handy and thought of this. It is a 3V CR 2032 cell. You can use any battery or a power adapter if you prefer. The holders are perfect and can be directly be inserted to a bread board.
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| 3V cell holder front and back views, a 3V cell |
This is where we are going to plug all our components and experiment things. The holes in a column are connected. The top and bottom areas can be used to connect to battery + and - or cases that require multiple connections.
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| Bread board |
LEDs:
Light Emitting Diodes are very useful since they can serve as indicator of the circuit behaviour. Note that LED allows current to flow in only one direction. This is a property of diode and LEDs are diodes that emit light.
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| LED |
Switch:
It is good to have a switch in the circuit as we can check once whether all connections are correct and then power the circuit using switch. There are many varieties of switches available. I am going to use a push switch for now.
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| a push switch |
Lets get started, with a basic circuit. Connect the battery, switch and LED as shown in the figure.
Keeping the circuit in mind, lets connect things onto the board one by one. Be ready for the show.
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| Basic circuit |
Placing the battery holder onto the board was a bit difficult and it takes up space. Probably I will solder wires onto the holder. The circuit is fairly simple. Time to turn it on. Make sure you have connected the LED in the correct manner. LED allows current only in one direction. chances are that you have connected it wrongly. If everything is okay you should see a glow when the switch is pushed.
Too much bright for a little LED !! Now lets starve him by feeding him lesser. Here comes the resistor!
Resistor:
Resistors are components that act as a barrier for current flow.
Lets introduce a resistor in the circuit and see the effect.
Key Understandings:
- Usage of few basic components (cell, bread board, LED, switch, resistor)
- Attribute of resistor - limits flow of current.
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