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9. Design a series-type ohmmeter, similar to the circuit of Fig. 4-22. The movement to be used requires 0.5 mA for full-scale deflection and has an internal resistance of 50 . The internal battery has a voltage of 3.0 V. CHAP. 4 PROBLEMS The desired value of half-scale resistance is 3,000 N. Calculate (a) the value of resistors R, and R,; (b) the range of values of R,, if the battery voltage may vary from 2.7 V to 3.1 V. Use the value of R₁ as calculated in (a).

9. Design a series-type ohmmeter, similar to the circuit of Fig. 4-22. The movement to be used requires 0.5 mA for full-scale deflection and has an internal resistance of 50 . The internal battery has a voltage of 3.0 V. CHAP. 4 PROBLEMS The desired value of half-scale resistance is 3,000 N. Calculate (a) the value of resistors R, and R,; (b) the range of values of R,, if the battery voltage may vary from 2.7 V to 3.1 V. Use the value of R₁ as calculated in (a).

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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9. Design a series-type ohmmeter, similar to the circuit of Fig. 4-22. The movement to be used requires 0.5 mA for full-scale deflection and has an internal resistance of 50. The internal battery has a voltage of 3.0 V. CHẠP. 4 PROBLEMS The desired value of half-scale resistance is 3,000 . Calculate (a) the value of resistors R, and R,; (b) the range of values of R,, if the battery voltage may vary from 2.7 V to 3.1 V. Use the value of R, as calculated in (a). 91
Transcribed Image Text:9. Design a series-type ohmmeter, similar to the circuit of Fig. 4-22. The movement to be used requires 0.5 mA for full-scale deflection and has an internal resistance of 50. The internal battery has a voltage of 3.0 V. CHẠP. 4 PROBLEMS The desired value of half-scale resistance is 3,000 . Calculate (a) the value of resistors R, and R,; (b) the range of values of R,, if the battery voltage may vary from 2.7 V to 3.1 V. Use the value of R, as calculated in (a). 91
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