MPP

[FdW]

Will be even more fun if it plays. I plan a gathering...

Not IF but WHEN

 

[Joachim Gerhard]

It will. No chance to fail.

 

[Benedetto]

 

[Joachim Gerhard]

This is interesting. Resistance before the bridge flattens the ripple. We have a common mode choke there with some 1.5Ohm so that will be good.

 

[RCruz]

Good choice !

 

[brianco]

Happy Christmas to Joachim, his team and everyone else.!

 

[Joachim Gerhard]

Thanks, Brian. We had a wonderful Sukiyaki yesterday. Only my son, my wife and me.
Had to clean the living room from a lot of my stuff.

 

[hesener]

Yes, it is for Mikes Symasym. I would like to make the Paradise PCB that way. Red with tinned tracks.

hi, who is your favorite PCB supplier? I offer to buy the first run of PCBs and heatsinks and distribute to whoever is interested....

routing 40% done....

 

[Joachim Gerhard]

I use MultiPCB. Fischer and PCPool are also good as far as i heard.
Looking forward for your design.

 

[Joachim Gerhard]

I would take 4 boards plus heatsinks.

 

[Holger Barske]

The red SymAsym boards came from PCBCART, Prototype to Production PCB supplier from China.
Quality is reasonable.

 

[Joachim Gerhard]

Thanks, Holger. I am fine with China too but i do not know how long lead time is. Payment may be in issue.

 

[brianco]

Thanks, Brian. We had a wonderful Sukiyaki yesterday. Only my son, my wife and me.
Had to clean the living room from a lot of my stuff.

Great! I'll bet your living room was not so full of electronic components as that of a certain Japanese designer we both know! WE have two friends with us and their young son...fishing friends. Unfortunately the husband had a stroke two years ago nad is badly handicapped - but very courageous.

 

[Joachim Gerhard]

No big horn speakers, sure. But a lot of parts and tools. I may need some days to setup again. This time in my small lab in the cellar. I am not much of a christmas guy. I enjoy new years more. Tonight i am going out to see some old friends in a pub. Can not drink though because i have to drive. All the best, joachim

 

[RCruz]

Beware the chinese good looking red boards.

Some of them use very bad quality copper so it is really difficult to solder.

Maybe you should consider handing this job to a local proven provider.

Please count me in for four boards and (depending on the costs) the heatsinks.
Maybe a GB for the resistors, opamps and regulators would be a good idea also.

Merry christmas to all

 

[Joachim Gerhard]

Thanks for the advice. I prefer local providers too.

 

[Joachim Gerhard]

I think Hesener should do the choice. He may have some experience.

 

[RCruz]

Regarding the Riaa caps, I see 2 x 20.4nF and 2 x 6.8nF

The 6.8 value (6800pf) is easy to find and my 1st choice would be Relcaps RTE - Polystyrene Film & Tin Foil, but 20.4 .... Can not find it anywhere.

 

[Holger Barske]

Beware the chinese good looking red boards.

Some of them use very bad quality copper so it is really difficult to solder

Basically, I am with you, and I don't want to hijack this thread for that matter, but that's not true in this case. We have done quite a ot of group buys with pcbcart, and there are hundreds to thousands of boards from them floating around. Be assured: No problems with quality. And of course no problems with soldering, as boards are tinned (as is every professional made pcb unlesse you don't want it).

 

[RCruz]

Perfect... I have nothing against it than.

Returning to the layout works, here you have the final p2p design. I am not sure about where to place the star gnd, but considering the lenght required for each wire, I believe this should be ok.