MPP

Holger Barske · 2012-01-04 12:32 am

Great. Lyra Kleos. Didn't use it for much too long.

Joachim Gerhard · 2012-01-04 12:41 am

Yes, that works. Needs a good arm though with very low friction. I had some trouble with low riding in some arms. The same cartridge send back to Japan worked just fine. I got it back without any change and it worked in a better arm.

Joachim Gerhard · 2012-01-04 12:52 am

Is it ok if Martina brings a turntable too ?

Holger Barske · 2012-01-04 1:28 am

Until now I didn't even know she's going to show up

.
But of course I am glad she will, and I am more than happy to step back and put the turntable part in her hands :cheers:

Joachim Gerhard · 2012-01-04 1:41 am

Cool, she will be happy. Sorry i did not ask you if she can come. Also Frans, our PSU designer is asking for permission.

gk7 · 2012-01-04 9:11 am

May I ask which transformer you use ? Lundahl ?

Joachim Gerhard · 2012-01-04 11:11 am

Sowter. The coils for EQ is also specially made for me by Sowter.
They are on Mu-Metall cores in Mu-Metall cases.
Lundahl is good too but Sowter was supplying more information for example how to terminate the transformers.

FdW · 2012-01-04 1:42 pm

For any one (like me

) that developed an interest into zeners, try this link. It will give you a very useful book (pdf) with datasheets and application notes.

http://images.vishay.com/books/VHN-DB1103-0406_Zener Diodes and ESD_INTERACTIVE.pdf

hesener · 2012-01-04 2:15 pm

here is the layout first version, dadaa!! hope you like it....
we will now go into verification phase, I will order a first set of boards for the team and once we know everything is working there will probably be a group buy - depending on interest of course ;-)

Joachim Gerhard · 2012-01-04 2:31 pm

Thanks Frans !
Hesener, this looks good. I will print it out and look at it.

Benedetto · 2012-01-04 2:58 pm

WOW !!!

Bksabath · 2012-01-04 3:18 pm

hesener said:
here is the layout first version, dadaa!! hope you like it....
we will now go into verification phase, I will order a first set of boards for the team and once we know everything is working there will probably be a group buy - depending on interest of course ;-)

I will be very interested in boards and if possible transistors.

Also if you need a novice to beta build the first ones and find possible snags I would be more than happy to help.

sq225917 · 2012-01-04 7:09 pm

Likewise, new deck coming any day, it'll need a new stage.

hesener · 2012-01-04 8:31 pm

Bksabath said:
I will be very interested in boards and if possible transistors.

Also if you need a novice to beta build the first ones and find possible snags I would be more than happy to help.

thanks bksabath,thats noted - may take you up on it ;-)

RCruz · 2012-01-04 8:38 pm

I would consider an honour to beta build if you need an extra pair of hands.

Bksabath · 2012-01-04 8:39 pm

Realy REALY chuffed (happy with big happy looking grin on me) looking forward to it.
PM ANY time for folow up.

Benedetto · 2012-01-04 9:04 pm

Hi there,
just took a deeper look into BOM.
The LT1001 ain't really a bargain.

LT1001CJ8 - Linear Technology
Earlyer in this thread the INA217 was mentioned.
TI had a quick response.
Now it's useless ?
Sorry if i missed the change,
but i can't recall.

hesener · 2012-01-04 9:05 pm

just use OPA134 or other opamps with low offset, most single opamps have the same pinout. I put LT1001 since it was in MiiB's simulation schematic....

Holger Barske · 2012-01-04 9:10 pm

LT1001 is a precision OP vor DC apps, INA217 an audio instrumentation amplifier. Don't have too much in common.

Benedetto · 2012-01-04 9:12 pm

Sure Holger this much i do understand.

MPP

Member

Member

Member

Member

Member

Member

Member

Member

Member

Attachments

Member

Member

Banned

Member

Member

Member

Banned

Member

Member

Member

Member