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6. A simple ohmmeter can be constructed from an ammeter as shown in Figure P5.6. In this design the measured resistance is given by the equation R = 10/1 1 kn. If this ohmmeter is used to measure the forward resistance of a signal diode, the measurement will typically be about 100 N when R, is really closer to 1 N. Explain with a current versus voltage diagram. Ohmmeter 10 V + I ~1 1 ΚΩ Figure P5.6 Unknown A B

6. A simple ohmmeter can be constructed from an ammeter as shown in Figure P5.6. In this design the measured resistance is given by the equation R = 10/1 1 kn. If this ohmmeter is used to measure the forward resistance of a signal diode, the measurement will typically be about 100 N when R, is really closer to 1 N. Explain with a current versus voltage diagram. Ohmmeter 10 V + I ~1 1 ΚΩ Figure P5.6 Unknown A B

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
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**Educational Content for Ohmmeter Design** **Text:** In this educational material, we'll explore how a simple ohmmeter can be constructed from an ammeter, as illustrated in Figure P5.6. The central equation governing the measured resistance in this design is \( R = \frac{10}{I} - 1 \text{ k}\Omega \). When this ohmmeter is employed to measure the forward resistance \( R_f \) of a signal diode, the typical measurement may read about 100 \(\Omega\), despite \( R_f \) being closer to 1 \(\Omega\). We'll provide an explanation using a current versus voltage diagram. **Diagram Details:** - **Figure P5.6:** The diagram shows a basic circuit configuration for an ohmmeter. Key components include: - A 10 V battery providing the necessary potential difference for operation. - A 1 k\(\Omega\) resistor connected in series, serving as a fixed resistance in the circuit. - An ammeter (labeled 'I') is integrated into the circuit to measure the current flowing through. - Two points, labeled 'A' and 'B', are connected to an unknown component—a diode in this scenario—which is the subject of the resistance measurement. The diagram effectively illustrates the series circuit configuration used in constructing the ohmmeter, providing a basis for further analysis and understanding of the resistance measurement process in relation to the diode.
Transcribed Image Text:**Educational Content for Ohmmeter Design** **Text:** In this educational material, we'll explore how a simple ohmmeter can be constructed from an ammeter, as illustrated in Figure P5.6. The central equation governing the measured resistance in this design is \( R = \frac{10}{I} - 1 \text{ k}\Omega \). When this ohmmeter is employed to measure the forward resistance \( R_f \) of a signal diode, the typical measurement may read about 100 \(\Omega\), despite \( R_f \) being closer to 1 \(\Omega\). We'll provide an explanation using a current versus voltage diagram. **Diagram Details:** - **Figure P5.6:** The diagram shows a basic circuit configuration for an ohmmeter. Key components include: - A 10 V battery providing the necessary potential difference for operation. - A 1 k\(\Omega\) resistor connected in series, serving as a fixed resistance in the circuit. - An ammeter (labeled 'I') is integrated into the circuit to measure the current flowing through. - Two points, labeled 'A' and 'B', are connected to an unknown component—a diode in this scenario—which is the subject of the resistance measurement. The diagram effectively illustrates the series circuit configuration used in constructing the ohmmeter, providing a basis for further analysis and understanding of the resistance measurement process in relation to the diode.
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