JG´s Nobrainer and Nobrainer Discrete

[smms73]

send to your mail address, good night.

 

[Joachim Gerhard]

https://www.youtube.com/watch?v=fN1WBgS9u_E

 

[RCruz]

Sim.... Not bad but it can surely be trimmed

 

[Joachim Gerhard]

Have you tried to lower the new resistors ?

 

[RCruz]

now we are talking..... new resistors at 33ohm.

 

[RCruz]

And now at 22 ohm.... do not know if it can go lower 🙂

 

[Joachim Gerhard]

Cool, it helps.

 

[RCruz]

The wing looks slightly better than the "stock" CFP

 

[FdW]

All,

Please have a look at http://www.diyaudio.com/forums/part...r-resistors-small-capacitors.html#post4149279

Frans.

 

[Joachim Gerhard]

http://hafler.com/pdf/the-transnova-topology.pdf

 

[FdW]

http://hafler.com/pdf/the-transnova-topology.pdf

This is a really 'strange' paper, and full of 'half'-truth's. The mosfet gates are not (as stated) current driven (that is not possible) the gain of the amplifier is set by I(drive)/(Vout/Rfeedback) this is not 100% feedback.

The absolute last sentence of the paper is totally right, simpler is better 🙂

Beside the fact that the view taken to electronics (in those days) is so totally different from the view we take today, and maybe even just because of that difference in view, this was a good and interesting read.

P.s. 'half'-truth is not menthe to degenerate the paper, I'm sure it has been written by people way smarter then I am 🙂 it is just my way of telling that we (at the least I) do have a totally different view to these things then once was the standard.

 

[Joachim Gerhard]

Back to phono. Our friend from Portugal, Sergio, astounds me. He had an idea for a DC coupled version of the Nobrainer Pre-Pre. I worked it out a little but have not build it yet.