Basic Electronics Engineering Lab-09

Jul 11th, 2016
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Objective: Object of this lab is to understand the working of H-Bridges, there need and as well as application specific designs.

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International Islamic University,IslamabadDepartment of Mechanical EngineeringBasic Electronics LABEXPERIMENT # 09: H-Bridges and Motor ControlName of Student: ..Roll No.: Date of Experiment: ..Report submitted on: ..Marks obtained: Remarks: Instructors Signature: ...Basic Electronics Lab (EE-301L)H-Bridges and Motor ControlObjective: Object of this lab is to understand the working of H-Bridges, there need and as well as applicationspecific designs.Theory:Four States of a DC Motor with Terminals A and B:o Four States of a DC Motor Output with Terminals A and B (Figure 1):Forward: Terminal A to GND, Terminal B to +VCC. Current flows through the motor tomake it rotate in the forward direction. (the terms "forward" and "reverse" only serve toindicate opposite relative directions)Reverse: Terminal A to +VCC, Terminal B to GND. Current flows through the motor,making it spin in the reverse direction.Coast: No connections to Terminals A and B. The motor is completely free tospin.Brake: Terminal A to Terminal BWhen a force acts on a motor, the motor operates as a generator, resisting theapplied force. So as the motor tries to coast to a stop, the motor a

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