HW10-S10Soln

# HW10-S10Soln - Problem 1 Wheatstone Bridges are used with...

This preview shows pages 1–4. Sign up to view the full content.

Solution r 0.1 0.1 r 1.0 1.0 r 10 10.0 r 100 100.0 v 0.1 x ( ) x x r 0.1 1 1 r 0.1 x 0.1 0.11 2.0 v 1.0 x ( ) x x r 1.0 1 1 r 1.0 v 10 x ( ) x x r 10 1 1 r 10 v 100 x ( ) x x r 100 1 1 r 100 Problem 1 Wheatstone Bridges are used with many different types of resistive sensors. The values of the fixed resistors used in the bridge depend on the type of sensor used. If the sensor is located in position R 1 in the bridge and the bridge is balanced when R 1 is at its minimum value (R 1 = R 1min ), then the balanced condition is: 2 3 min 1 4 R R R R . If we let R 4 = (R 3 /R2)R 1min and substitute that in for R 4 into the basic bridge equation, using this relationship then we can eliminate R 4 from the bridge equation and we can rewrite the bridge equation as: r r x x v 1 1 , where v = E out /V supply , r = R 3 /R 2 , and x = R 1 /R 1min . Make a plot of v versus x, for x in the range 0.1 to 2.0, with r set to the following values: r = 0.1, 1.0, 10.0, and 100.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
0 0.5 1 1.5 2 0.5 0.4 0.3 0.2 0.1 0 0.1 r = 0.1 r = 1.0 r = 10.0 r = 100.0 Bridge Response R1/R1min Eth/Vs
Problem 2 The torque wrench shown in the figure below is claimed to produce an output voltage e o proportional to the torque applied by force f to the nut, irrespective of the point of force

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 10/24/2010 for the course MA 303 taught by Professor Staff during the Spring '08 term at Purdue.

### Page1 / 7

HW10-S10Soln - Problem 1 Wheatstone Bridges are used with...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online