(1) The maximum motor current occurs when the motor wheel is locked. By selecting resistor values R...
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Question:
(1) The maximum motor current occurs when the motor wheel is locked. By selecting resistor values R b1 and R b2 in the motor driver circuit seen in Figure, it is possible to limit this maximum current. Using the equivalent circuit models for PNP and NPN transistors, solve for R b1 = R b2 =R b such that the maximum motor current is 1A. Use the value found in Experiment for R Motor . Assume the following parameters:
(a) V BEI = V EB4 = 0.8V
(b) ? 1 = ? 4 =200
Figure-Motor driver circuit when the wheel is locked and the maximum voltage is applied by grounding one control signal (B2) and supplying 10V to the other control signal (B1)
(2) What actual resistance value will be used in your circuit? What maximum current does using this resistor result in?
Related Book For
Fundamentals of Electric Circuits
ISBN: 9780073301150
3rd edition
Authors: Matthew Sadiku, Charles Alexander
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