Timeline for Maximum Symmetrical Swing for BJT Amplifier
Current License: CC BY-SA 4.0
7 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 23, 2019 at 15:28 | vote | accept | Edmund Blackadder | ||
| Oct 23, 2019 at 3:22 | comment | added | Bruce Abbott | Is this to be an AC amplifier? Will it have an Emitter resistor for bias stability, and will it be bypassed to AC? | |
| Oct 22, 2019 at 15:06 | comment | added | sstobbe | It is more of a thinking question than one with a specific answer. Ignoring saturation say your CE amp pulls the output from Vcc/2 to ground (0V); namely doubling its collector current. What happens on the other half cycle of the input signal? The collector current drops to 1/2 of its quiescent point, so the output only rises to 3/4 Vcc. Ignoring distortion, solving for the largest output swing is some what complicated. | |
| Oct 22, 2019 at 13:30 | comment | added | jonk | Using the term "symmetrical" suggests low distortion and flat gain. By definition, this means minimal swing at the output, not maximal. The reason is that large swings imply large changes in collector current, implying large changes in dynamic emitter resistance. Compensating that means low gain. Etc. Maximum and symmetrical are opposing terms. You'll need to specify a compromise. | |
| Oct 22, 2019 at 13:17 | answer | added | user173271 | timeline score: 0 | |
| Oct 22, 2019 at 13:08 | answer | added | Dave Tweed | timeline score: 1 | |
| Oct 22, 2019 at 12:51 | history | asked | Edmund Blackadder | CC BY-SA 4.0 |