Post your Solid State pics here

[coolewater]

Hi Thimios,
looks good, fine work.

 

[thimios]

Hi Thimios,
looks good, fine work.

Thanks my friend.
Thanks for all🙂

 

[kct]

Hi Thimios,

good job, looks very professional and clean build.

 

[thimios]

Hi Thimios,

good job, looks very professional and clean build.

Thanks🙂

 

[tr1ppo]

Finally I finished my amplifier
Based on LME49830 and 2sk1058 & 2sj162

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

 

[minek123]

Finally I finished my amplifier
Based on LME49830 and 2sk1058 & 2sj162

Can't see images

 

[tr1ppo]

I made an album on google
I hope is ok this time
https://goo.gl/photos/QD78Bmfa5nmP5U3D6

 

[minek123]

I made an album on google
I hope is ok this time
https://goo.gl/photos/QD78Bmfa5nmP5U3D6

Looks great! Can you post a schematic for this amp?

 

[xrk971]

CFH7 Amp

Amp description here:
http://www.diyaudio.com/forums/solid-state/294834-cfh7-amp.html

Sound clips here:
http://www.diyaudio.com/forums/soli...y-simple-quasi-mosfet-amp-14.html#post4811896

Running several days straight now, No fan needed, bias is stable at 160mA, offset stable within 5mV.

 

[sthcoaster]

Valery & Jeff zero distortion modular system

My first visit to this thread. I'm converted to this idea of PCB porn. Nice work and great photo.

 

[tr1ppo]

Looks great! Can you post a schematic for this amp?

Here is the schematic

 

[xrk971]

Pass M2

 

[borys]

My last education project (I will use it for speaker measurements).
Single supply, BD681/682 darlington outputs, NE5532/current dumping.
It throws massive 3W RMS from Dell laptop charger 😀

 

[Bigun]

cute Borys ! (you gotta get some cheesehead screws instead of countersinks)

 

[esgigt]

I've read the paper several times - it is very well written. My copy (pdf) exceeds the forum file size limit or I'd post it here.

You could store it in "the cloud" (perhaps googledrive or onedrive) and publish the link...

Edwin

 

[mhouston]

Borys, looks very compact.

 

[Mooly]

xrk971's questions and answers on 'Current Dumping' are now located here:

http://www.diyaudio.com/forums/solid-state/296530-wishing-learn-about-current-dumping.html

 

[sajti]

My next amplifier under development. It's named V4, as it has 2 pairs of output devices.

Sajti

 

[sajti]

V6, with 3 pairs...

Sajti

 

[borys]

I think I will use CFP output stage next time, try to get 4W out of it 😀
But to be fair, the 3,5W is plenty for all day listening, let me say 10W will do the job for sure.

sajti
The boards look very nice !!

The 3 pair one looks fully symetric 2x LTP + current mirror on top of it VFA ??


From my experiance it is very good to putt 47-100uF just by the drens/collectors to avoid ringing. Bellow my bad example how I have burned 20 pairs of mosfets while testing 😀 The fix was very easy, just a small cap by the each transistor. The last pic (Newfile 5) is the fixed one with 100uF by the drain + bootstrap.