Current feedback Mosfet Circlotron : it's alive !
Hi,
I present you the amp that I just realized.
This is a current feedback Mosfet Circlotron
Without Diyaudio forum and another French, this amp could never be created.
So thank you all the people who helped me and especially Joe Berry who gave me the Keystone of this amp, the current generator so particular that guarantee a thermal stability
A special thanks to gionag, my friend Rabbi Michele, who is the first to have made this amp and who made this great layout
YouTube : low cost phone record... but it's alive !
in real R15=500, R14=220, C3-C4= 47p
YouTube : low cost phone record... but it's alive !
Hi,
I present you the amp that I just realized.
This is a current feedback Mosfet Circlotron
Without Diyaudio forum and another French, this amp could never be created.


YouTube : low cost phone record... but it's alive !

in real R15=500, R14=220, C3-C4= 47p



YouTube : low cost phone record... but it's alive !
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Bom example
gionag made a simpler version, without stack, but not tested
gerber on request
gionag made a simpler version, without stack, but not tested
gerber on request
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This amp needs to be driven by a differential source . How do you supply it? an input transformer may be ?
it could work in asym but performance is worse, I use a symmetrical DAC on youtube video, but I can use a UGS preamp or a transformer (LL1690)
UGS adventures
UGS adventures
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UltimateX86, сongratulations on your new design! An interesting amplifier. Did you measure the parameters of this amplifier?
moschfet. Built your circlotron, so far only one channel. But I’ll do the second channel too. Good parameters and thermal stability.
moschfet. Built your circlotron, so far only one channel. But I’ll do the second channel too. Good parameters and thermal stability.
Wonderful! THD below -100dB. I hope to repeat your amplifier in the near future.
In my Patrick's amplifier, the parameters turned out a little worse. But in my version, the power of the pre-amplifier should be less so far.
In my Patrick's amplifier, the parameters turned out a little worse. But in my version, the power of the pre-amplifier should be less so far.
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UltimateX86, сongratulations on your new design! An interesting amplifier. Did you measure the parameters of this amplifier?
moschfet. Built your circlotron, so far only one channel. But I’ll do the second channel too. Good parameters and thermal stability.
Hi Yurik, nice to see, that my circuit work and have children 🙂
I have to admit that I'm a little jealous when I see Ulti's spects 😉
Wow, a great presentation! Is it possible to share the asc file?
here it is, but change the TTA model for 2SA1360 or 2SA1381
the model is completely smoked 🙂
So in real amp we could lower the compensation, and the amp could work with these transistors too
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UltimateX86, I have a question: capacitors C3, C4 are connected in different ways on the diagram and on the printed circuit board. Which option is correct?
you are totally right...
my bad... i have placed the component in the wrong position.
the one in the simulation is correct.
i will update the pcb very soon
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