- Thread Starter
- #161
Yes, expected, just bits that were to hand.
So as you can see above just a very small resistance in series with a 30uF cap and the amp is stable.
Your test, putting a high value cap straight across the output is not correct. This will never happen. There will always be some series resistance and inductance.
If you have been testing amps this way Im afraid you have been misleading yourself and drawing false conclusions about stability.
Look - I know all of that. You know that in post #1 there is a small resistor. However, I have been in analog design since 1980 as a professional, graduated in electroacoustics in 1979, and having amp design as a hobby since about 1970. And I want for my amps to be stable even under such conditions that I have shown. Why? Because you never know. You may expect that 20 speakers will never get you into the trouble and then the 21st will, because you just didn't know. I understand your point, but you do not need to protect your business so. There is no problem, no danger. We are talking different things, different language. I am interested in worst case conditions, even if they are improbable, but they are not impossible. My approach is not a business approach. If you fulfil worst case conditions, you have it all. If not, then just maybe.