Circuit Diagram. Circuit Diagram is a free software for Windows which allows you to exactly what its name implies — drawing circuit diagrams. Some of the components available are microcontroller, demultiplexer and inductor, however custom components can be added. Designs can be easily shared and edited with the community.

A breadboard is a device for testing temporary electronics projects. Components used to test a circuit can be reused for other projects. None of the components are damaged.

Almost all people start to learn electronics using breadboard because it is the simplest way of making circuit. The photograph shows a typical small breadboard which is suitable for beginners building simple circuits with one or two ICs (chips).

Free Circuit Diagram To Breadboard

Connections on Breadboard

Simple Breadboard Circuit

Breadboard has many tiny sockets or holes arranged on a 0.1’’ grid. The leads or terminals of most of the components like resistors, diodes, transistors, etc. can be pushed straight into the holes.

A breadboard has 4 rows of holes at the top and 4 rows at the bottom and there are several columns of holes in the middle.

There are two groups of vertical columns in the middle part, as you see in the picture below it has been separated by a blue rectangular block.

None of the rows and columns are linked to one another.

The holes in rows are linked horizontally and column holes are linked vertically.

Converting a circuit diagram to a breadboard layout is not straight forward because the arrangement of components on breadboard looks quite different from the circuit diagram. When putting parts on breadboard you must concentrate on their connections, not their positions on the circuit diagram.

Building a Circuit on Breadboard(Dark Detector using transistor)

Get following components:

NPN transistor- BC547 or BC147 or BC548

Resistor- 100K

Resistor-330Ohm

Light emitting diode(LED)

Light dependent resistor(LDR)

Connecting wires- Use single-core plastic-coated wire of 0.6mm diameter (the standard size)-You can use wire that is used for Computer Networking.

6V battery (4 -AA size battery)

It is great but why you use that 100k Ohm resistor? Everything can happen without it… pls somebody explain me.