Timeline for Single NPN Emitter-Follower in amplifier's input stage
Current License: CC BY-SA 4.0
7 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Dec 1, 2020 at 9:22 | comment | added | Dawid W | @MathKeepsMeBusy - Exactly, it was - most likely - about cheaper caps. | |
| Dec 1, 2020 at 9:21 | vote | accept | Dawid W | ||
| Nov 30, 2020 at 20:02 | comment | added | user16324 | PNP transistors tend to be slightly lower noise. This may be part of Doug Self's thinking; he was interested in audio quality. | |
| Nov 30, 2020 at 19:17 | answer | added | Frog | timeline score: 1 | |
| Nov 30, 2020 at 18:59 | comment | added | Math Keeps Me Busy | Just had a thought. What is \$V_{cc}\$? Could they get away with lower voltage capacitors by implementing the way they did? | |
| Nov 30, 2020 at 18:57 | comment | added | Math Keeps Me Busy | Given that both the input and output of Q1 are capacitatively coupled, I can't think of a good reason why you couldn't implement this amplifier stage with reversed polarity. I will watch this question to see if anyone else can think of a reason why it should be implemented in pnp rather than npn. | |
| Nov 30, 2020 at 18:32 | history | asked | Dawid W | CC BY-SA 4.0 |