- 2 Connect The Common Emitter Configuration Illustrated In Figure 7 1 Start With Both Power Supplies Set To Ov The Pu 1 (14.66 KiB) Viewed 23 times
- 2 Connect The Common Emitter Configuration Illustrated In Figure 7 1 Start With Both Power Supplies Set To Ov The Pu 2 (41.25 KiB) Viewed 23 times
- 2 Connect The Common Emitter Configuration Illustrated In Figure 7 1 Start With Both Power Supplies Set To Ov The Pu 3 (63.63 KiB) Viewed 23 times
- 2 Connect The Common Emitter Configuration Illustrated In Figure 7 1 Start With Both Power Supplies Set To Ov The Pu 4 (63.63 KiB) Viewed 23 times
R3 100 Ω w Vec Base Collector R: 33 ΚΩ Vse Emitter Fig. 7-1 3. Without disturbing the sitting of Voe, slowly increase Voc until 2.0 Vis measured between the transistor's collector and emitter. This voltage is Vce Measure and record Vk2 for this sitting. Record Vrz in table 7-2 in the column labeled Baes Current =50 uA. Table 7-2 VCE Base Current =50 NA Base Current =100 NA Base Current=150MA Measured Vrz(Measured){ computed) Vez(Measured)..( computed) Vez(Measured)l( computed) 1.0V 2.0V 3.0V 4.0V 5.0V 6.0V 7.0V 8.0V
4- Compute the collector current, Lc, by applying Ohm's law to Re Use the measured voltage, VR2, and the measured resistance Rz, to determine the current. Note that the current in Rz is the same as Ic for the transistor. Enter the computed collector current in table 7-2 in the column labeled Base Current=50uA. 5. Without disturbing the setting of Vas, increase Voc until 4.0 Vis measured across the transistor's collector to emitter. Measure and record VR for this setting. Compute the collector current by applying Omh's law as in step 4. Continue in this manner for each of the value of Vce listed in Table 7-2. 6- Reset Vee for OV and adjust Vbg until Vra is 3.3V. The base current is now 100uA. 7. Without disturbing the setting of Vus, slowly increase Voc until Vce is 2.0 V. Measured and record VR2 for this sitting in Table 7-2 in the column labeled Base Current=100uA. Compute Ic for this setting by applying Ohm's law to R2. Enter the computed collector current in Table 7-2. 8- Increase Vec until VCE is 4.0 V. Measured and record VR2 for this setting. Compute I as before. Continue in this manner for each value of Voc listed in Table 7-2. 9. Reset Voc for OV and adjust Vua Until Ve is 4.95V. The base current is now 150uA. 10-Complete Table 7-2 by repeating steps 7 and 8 for 150uA of base current. 11- Plot three collector characteristic curves using the data tabulated in Table 7-2. The collector characteristic curve is graph of Vce versus le for a constant base current. Choose a scale for Lc that allows the largest current 12-Use the characteristic curve you plotted to determine the Bpc for the transistor at a Vce of 3.0V and a base current of 50A, and 150 „A. Then repeat the procedure for a Boc at a VCE of 5.0. Tabulate your result in Table 7-3. Table 7-3 Current Gain Boc VCE 1s=50uA 1s=100A 1s=1500A 3.0V 5.0V