Timeline for Discrepancy in increasing AC voltage gain of a Common Emitter Amplifier
Current License: CC BY-SA 4.0
14 events
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| Nov 13 at 16:06 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| Sep 8, 2021 at 22:45 | answer | added | user173271 | timeline score: 1 | |
| Sep 8, 2021 at 16:07 | comment | added | electrovolt | The internal emitter resistance should be the one causing the problems, but getting to bypass it should have caused minimal problems. That doesn't happen of course, when I simulate. | |
| Sep 8, 2021 at 16:05 | comment | added | electrovolt | No, the voltage gain. I've inserted the picture as well. | |
| Sep 8, 2021 at 15:44 | comment | added | G36 | Nonlinearity on the output waveform? | |
| Sep 8, 2021 at 15:39 | comment | added | electrovolt | That does increase the AC gain, right? But, how to explain this non-linearity and why should I change the potentiometer bias to manage this? | |
| Sep 8, 2021 at 15:34 | comment | added | G36 | By adding R9 and C5 you have decreased the amplifier input resistance. $$Z_{IN} \approx R_3||R_4||[ (\beta +1) (r_e + (R6||R9)) ]$$ | |
| Sep 8, 2021 at 15:29 | comment | added | electrovolt | It would be really helpful if someone would atleast respond. | |
| Sep 8, 2021 at 14:04 | history | edited | electrovolt | CC BY-SA 4.0 |
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| Sep 8, 2021 at 13:39 | history | edited | electrovolt | CC BY-SA 4.0 |
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| Sep 8, 2021 at 13:30 | history | edited | JRE | CC BY-SA 4.0 |
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| Sep 8, 2021 at 12:38 | history | edited | electrovolt | CC BY-SA 4.0 |
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| Sep 8, 2021 at 10:38 | comment | added | electrovolt | Tinkering around with R9 and C5, I switched their positions to create a high pass filter, and changed R9 to \$117\Omega\$ and C5 to \$510nF\$. This retained the 0.6V pk-pk input voltage, while maintaining the -50 AC gain. | |
| Sep 8, 2021 at 9:54 | history | asked | electrovolt | CC BY-SA 4.0 |