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The circuit is shown below which requires simultaneous measurements of base current (IB), collector current (Ic) and collector to emitter voltage (VCE). Thus, you can from 2 groups to share multimeters during the measurements. Everybody is expected to prepare his own report individually. Make the necessary connections to build the circuit. Make sure that the multimeters to be used for the current measurements are functioning properly (I noticed that fuses of some of the multimeters are blown). You can use fixed (12 V) variable DC sources of the module mount. 1) Adjust the potentiometers to apply 0 V base voltage (VB) and collector voltage (Vc). Then slowly increase VB by turning the potentiometer to observe a base current of 10 μA. Keep this B constant for the rest of the measurements. Then slowly increase VCE by turning the other potentiometer. The change in VCE will change IB as well, thus adjust IB to 10 μA after every VCE change! Record Ic and VCE. Make sure that you take enough points to generate a smooth curve. Try to take fine steps for VCE when Ic is increasing significantly. 2) Repeat (1) for l₁=20 μA. 3) Show Ic vs. VCE curves for both IB values on the same plot. Calculate ẞ for each curve. Are the results as expected? Briefly explain why a change in VCE affects IB as well. 4) Fix VCE to 12 V. This ensures that the BJT is in the forward-active mode. Then, read Ic as you change IB from 10 to 50 μA with 10 μA steps. Calculate ẞ for each step and comment on the results. Include these data points on the same plot to be generated for (3). 12 V 0.7 V www + VCE Figure 1: BJT circuit for DC characterization.

The circuit is shown below which requires simultaneous measurements of base current (IB), collector current (Ic) and collector to emitter voltage (VCE). Thus, you can from 2 groups to share multimeters during the measurements. Everybody is expected to prepare his own report individually. Make the necessary connections to build the circuit. Make sure that the multimeters to be used for the current measurements are functioning properly (I noticed that fuses of some of the multimeters are blown). You can use fixed (12 V) variable DC sources of the module mount. 1) Adjust the potentiometers to apply 0 V base voltage (VB) and collector voltage (Vc). Then slowly increase VB by turning the potentiometer to observe a base current of 10 μA. Keep this B constant for the rest of the measurements. Then slowly increase VCE by turning the other potentiometer. The change in VCE will change IB as well, thus adjust IB to 10 μA after every VCE change! Record Ic and VCE. Make sure that you take enough points to generate a smooth curve. Try to take fine steps for VCE when Ic is increasing significantly. 2) Repeat (1) for l₁=20 μA. 3) Show Ic vs. VCE curves for both IB values on the same plot. Calculate ẞ for each curve. Are the results as expected? Briefly explain why a change in VCE affects IB as well. 4) Fix VCE to 12 V. This ensures that the BJT is in the forward-active mode. Then, read Ic as you change IB from 10 to 50 μA with 10 μA steps. Calculate ẞ for each step and comment on the results. Include these data points on the same plot to be generated for (3). 12 V 0.7 V www + VCE Figure 1: BJT circuit for DC characterization.

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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The circuit is shown below which requires simultaneous measurements of base current (IB), collector current (Ic) and collector to emitter voltage (VCE). Thus, you can from 2 groups to share multimeters during the measurements. Everybody is expected to prepare his own report individually. Make the necessary connections to build the circuit. Make sure that the multimeters to be used for the current measurements are functioning properly (I noticed that fuses of some of the multimeters are blown). You can use fixed (12 V) variable DC sources of the module mount. 1) Adjust the potentiometers to apply 0 V base voltage (VB) and collector voltage (Vc). Then slowly increase VB by turning the potentiometer to observe a base current of 10 μA. Keep this B constant for the rest of the measurements. Then slowly increase VCE by turning the other potentiometer. The change in VCE will change IB as well, thus adjust IB to 10 μA after every VCE change! Record Ic and VCE. Make sure that you take enough points to generate a smooth curve. Try to take fine steps for VCE when Ic is increasing significantly. 2) Repeat (1) for l₁=20 μA. 3) Show Ic vs. VCE curves for both IB values on the same plot. Calculate ẞ for each curve. Are the results as expected? Briefly explain why a change in VCE affects IB as well. 4) Fix VCE to 12 V. This ensures that the BJT is in the forward-active mode. Then, read Ic as you change IB from 10 to 50 μA with 10 μA steps. Calculate ẞ for each step and comment on the results. Include these data points on the same plot to be generated for (3). 12 V 0.7 V www + VCE Figure 1: BJT circuit for DC characterization.
Transcribed Image Text:The circuit is shown below which requires simultaneous measurements of base current (IB), collector current (Ic) and collector to emitter voltage (VCE). Thus, you can from 2 groups to share multimeters during the measurements. Everybody is expected to prepare his own report individually. Make the necessary connections to build the circuit. Make sure that the multimeters to be used for the current measurements are functioning properly (I noticed that fuses of some of the multimeters are blown). You can use fixed (12 V) variable DC sources of the module mount. 1) Adjust the potentiometers to apply 0 V base voltage (VB) and collector voltage (Vc). Then slowly increase VB by turning the potentiometer to observe a base current of 10 μA. Keep this B constant for the rest of the measurements. Then slowly increase VCE by turning the other potentiometer. The change in VCE will change IB as well, thus adjust IB to 10 μA after every VCE change! Record Ic and VCE. Make sure that you take enough points to generate a smooth curve. Try to take fine steps for VCE when Ic is increasing significantly. 2) Repeat (1) for l₁=20 μA. 3) Show Ic vs. VCE curves for both IB values on the same plot. Calculate ẞ for each curve. Are the results as expected? Briefly explain why a change in VCE affects IB as well. 4) Fix VCE to 12 V. This ensures that the BJT is in the forward-active mode. Then, read Ic as you change IB from 10 to 50 μA with 10 μA steps. Calculate ẞ for each step and comment on the results. Include these data points on the same plot to be generated for (3). 12 V 0.7 V www + VCE Figure 1: BJT circuit for DC characterization.
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