Spin Semiconductor

Hi, I´m from Germany,

If you get an account, you can have some informations, but this info´s are not very significant. If you want the full information, you have to by the magazin. I get the magazin in next days, then I will report from it.

greetings Saxosun

Hello Don, thanks for answere and your good ideas. 1) I do always 2) I take Flux-OFF to clean the board, but it`s the same 3) sorry, but I don`t understand this point 4) It`s an importand point: If I ground the input signal by the jack plug, it`s the same noise like everytime. If I ground the input ...

I test 3 miscellaneous power supply`s, but it is sadly always the same.

Saxosun

Hi Frank, I can´t discover any troublemakers in my room, I test an other room too. Yesterday I get a new V-Reg, a AS1117, and the noise is a little bit better. Next week I get my new SMD decives, and I will test a new layout. If I finished my new design, I will post it. Thanks a lot for your fast a...

Hi Frank, I detect the power rail, I think nearly the V-Reg it is OK, here a pic: http://s812.photobucket.com/albums/zz48/Saxosun/?action=view&current=nearlyV-Reg.jpg But nearly the FV-1 the noise was bigger, here a pic too: http://s812.photobucket.com/albums/zz48/Saxosun/?action=view&curren...

Yes, it is.
I have copy it from the spin semi webside, but I don`t understand why it must be. Is this the problem ???

Here the layout and the schematic. It`s the new one.
http://s812.photobucket.com/albums/zz48 ... ematic.png
http://s812.photobucket.com/albums/zz48 ... bBoard.png
At the pics you see a 7805, but really it`s a LF 33 CV.

OK,
today I design a new Layout. It looks like the Layout from the spin semi webside. I test the circuit, and the noise is much better, but not perfect.
Which devices are much importand from the circuit ? Must I take specific devices for it ??? Low ESR Caps ??? Or an other V-reg ???

greetings Saxosun

Hello, thanks for answer. The power supply is a laboratory power supply ( trafo ), then follows a LF 33 CV. For a test I try the laboratory power supply directly, and in a other test I try the laboratory power supply -> 7805 -> LF 33 CV, but it`s always the same noise at the output. The schematic is...

Hello, I´m a newbie from germany, please sorry for my english... I buy the Spin-1001 DEVB and some FV-1 Reverb IC`s. I want to design some stompboxes for E-guitar. I design my own PCB but the problem is, that I have much noises at the output. I think, it`s a noise about 8-10 kHz and it exist at the...