The equation for the current I is: a) What is the minimum value (in mA) that the

Question

The equation for the current I is:

a)      What is the minimum value (in mA) that the current I can be?

b)      What is the maximum value (in mA) that the current I can be?

c)      Discuss how variations in manufacturing tolerances can affect the design and cost of a circuit.

d)     Write a MATLAB script that asks for the values of R1, R2, R3, R4, and VDC, along with their individual tolerances, and then calculates the minimum and maximum current I (in mA). Make your script display I to one decimal place.

The schematic shows a simple combination of resistors that is connected to a DC voltage source to form a complete circuit. I is the current flowing through the voltage source. The resistor and voltage numbers in the table are only the center values as specified by the manufacturer. For this problem, you may assume the tolerance range defines the maximum and minimum values. Schematic The equivalent resistance of the circuit is given by this equation: Req equation The equation for the current I is: I current equation What is the minimum value (in mA) that the current I can be? What is the maximum value (in mA) that the current I can be? Discuss how variations in manufacturing tolerances can affect the design and cost of a circuit. Write a MATLAB script that asks for the values of R1, R2, R3, R4, and VDC, along with their individual tolerances, and then calculates the minimum and maximum current I (in mA). Make your script display I to one decimal place.

Explanation / Answer

Tolerance:

(in machine building), the interval within which a numerical characteristic of a parameter is permitted to deviate from its nominal (rated) value. Tolerances are set for the geometric parameters of machine elements and machinery parts (linear and angular dimensions and the shape and positioning of surfaces) and for mechanical, physical, chemical, and other parameters (for example, electric resistance, hardness, and percentage of chemical elements in materials).

Tolerances are indicated in the standards and technical specifications or on the drawings for manufactured objects in the form of two limit sizes (maximum and minimum), between which lies the actual size

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