F6 product announcement and owner's manual

[buzzforb]

each peak has two sub-peaks

 

[flg]

Who is "choky"?

Com'on, your not that much of a NooB! Search!
But, I'll give you a hint: He was formaly known as...

 

[Zen Mod]

....... Pub's Furniture

 

[buzzforb]

Not worth knowin. He is a relic. Anybody who likes transformers needs to be ignored.

 

[Tape Echo]

if you want to make mosfet iteration - use exact schm from article

"second harmonic version"

increase number of LEDs to 3x green , plain ones , 3mm

good to go

 

[generg]

To look at the open loop distortion spectrum was for me the ectrifying part in Nelson's owner manual....!

Up to now I did it only in the closed loop status...anybody informed enough to explain possible advantages to do it in Nelson's way, Mr. Pass?

😀😀😀

 

[aoc]

Had anyone using sounds card with appropriate sw been able to show the residual signal like what Nelson did using his distortion analyzer. I haven't found any suitable sw that will do it.

Alex

Sent from my C6903 using Tapatalk

 

[generg]

Interesting question!

I am also very interested in this direction, anybody knowing more?

🙂

 

[6L6]

Most soundcards will perform an FFT on the signal and that gives the display of the fundamental peak and the lesser harmonic peaks shown over the entire frequency spectrum. To show the distortion residual it's necessary to have either an audio precision, audio prisim, or some type of older distortion analyzer. I'm not sure if any soundcard software has a display of the residual.

 

[Loudthud]

You can look at the distortion with a simple (passive) twin T notch filter. It needs to be tunable to null the fundamental. Usually there is some attenuation of H2 at the output. Analyzers correct for this.

 

[Antoinel]

Who is "choky"?

Your search turned out to be Zen Mod

 

[flg]

... He was formaly known as...

 

[Antoinel]

Hello flg. The suspense was making me nervous!

 

[Vix]

I always liked Choky, still wonder why he changed his username to...khm....(choking)..khmmm...
Sorry for off-topic, this belongs to Pass pub 🙂

 

[bcmbob]

Had anyone using sounds card with appropriate sw been able to show the residual signal like what Nelson did using his distortion analyzer. I haven't found any suitable sw that will do it.

Alex

Sent from my C6903 using Tapatalk

Might be worth investigating the latest version.

Exploring Visual Analyser (VA)

 

[aoc]

Thanks will definitely check it out this weekend

 

[dimkasta]

In your scope, Channel 1 is input side, and channel 2 should go like after an L pad to attenuate ~30db from the output (or whatever the gain of the amp is), and then use the scope's ability to show the difference between the two channels.