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Solderless Breadboard Tutorial

Solderless breadboards are used for designing and testing circuits using discrete electronics components. Discrete electronics components have two or more wires coming out of them, called "component leads." The solderless breadboard has rows and columns of small holes into which the wires of the components slide into and by which circuits are completed. Power must be applied to the board in a way that facilitates ease in laying out the components while forming a complete circuit.

Things You'll Need

  • Electronics components (resistors, transistors, diodes, integrated circuits, and others)
  • 12-Volt power source (power supply)
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Instructions

    • 1

      Connect two wires to a 12-Volt power supply. Power supplies used for testing circuits on a breadboard. Allow stripped wire ends to be wrapped around two posts: a red positive (+) and a black negative post (-). Once wires have been connected, plug the 12-Volt power supply into a standard wall outlet.

    • 2

      Lay the breadboard on a flat surface near the power supply, orienting the board lengthwise from left to right.

    • 3

      Insert the stripped end of the red positive wire into the small hole in the far bottom hole on the left of the breadboard, and then insert the stripped end of the black negative wire into the small hole in the far top hole on the left of the breadboard. Don't turn on the power supply yet at this stage.

    • 4
      Resistor with wire leads.

      Bend the leads of the first component to be placed onto the breadboard, making 90-degree elbows as close to the component as possible. Both leads should be facing downward so they may be inserted into holes on the breadboard.

    • 5

      Place one of the leads of the first component into the same row in which the positive power supply wire is connected. The hole immediately to the right of where the positive power supply wire is inserted would work, or any of the other holes in that row would work as well.

    • 6

      Insert the other wire lead of the component into a hole on another row and column which doesn't have power applied to it. This second lead will end up on a separate row on which the first wire lead of a second component will also be inserted.

    • 7

      Bend the wire leads downward on the second component, making 90-degree bends near the main part of the component (in the center of the two wire leads). Insert one wire lead of the component into the same row in which the second wire lead of the previous component was inserted, then insert the second wire lead of the second component into a separate row in which nothing else is connected.

    • 8

      Insert the leads of all other components necessary to form the desired circuit. At the very last component of the circuit, the second wire lead of that final component must be inserted into the same row in which the black negative wire, coming from the power supply, is inserted. This will form a complete circuit from the positive powered row to the negative powered row.

    • 9

      Turn on the power switch of the power supply and make all necessary tests to be sure your circuit design will work in the application in which it will be applied, most likely with the components soldered to a permanent circuit board.


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