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LabHighCurrentLoad_power_bb

At the top of the drawing, there is a DC power jack. Yellow and black wires from the jack connect to a 7805 5-volt voltage regulator mounted in the top right three rows of the breadboard with its tab facing to the right. The power supply's yellow wire is connected to the regulator's top pin row, the input pin. The power supply's black wire is connected to the regulator's middle pin, or ground. A yellow wire connects the regulator's top pin, the input pin, to the outer left side row of the board. This is an unregulated voltage bus on the left side. It will be used to control the motor. A red wire connects the regulator's output pin, the bottom pin, to the inner right side bus. This will be the regulated voltage bus. Another black wire connects the regulator's middle pin, ground, to the inner right side row of the board. This is the ground bus on the left side. Similarly, a black wire connects the left side ground bus to the outer row on the right side. This is the right side ground bus. There is no connection between the unregulated voltage bus on the left and the regulated voltage bus on the right, however.

DC voltage jack and 7805 voltage regulator on a breadboard. The regulator is supplying 5V and ground holes are supplying voltage to the rest of breadboard.

Posted on August 31, 2014August 23, 2018 Full size 298 × 577

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Published inLab: Using a Transistor to Control a High Current Load

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