analogue signal analyzer by dalmo lima (PC Based very nice)

[yassine]

hey all this is my first post i hope its on the correct section

anyway i was search for some stuff on internet and i found a project by a Brazilian electronic repair tech it is a very nice project

he posted a list of video on youtube plus the source code of his software and an exe a pdf with a simple schematic but (there is always a BUT)

i think he used an old busy noisy op amp it is a very simple schematic using a quad op amp LM348  couple trimmers and thats a voltage follower
u feed the gen signal from the output of ur computer and then the output of LM348 are feed back to the computer input !

well it is nice but the LM348 ghhh noise noise aleeeeert !!!!

if you dont have a good insulation a good sound card it will give you  a harsh time to get a correct curve

the software is very nice you can save curve for later comparison  u can put a picture of ur board so u can save ur curve plus every component pin curves and everything !

anyway hope some of u guys can make a schematic better mod it a little

here is link to videos and his website i take no credit for nothing !
http://youtu.be/HLOqK0jjSMg
http://youtu.be/BYtfKwh124s
http://youtu.be/6i4i90PFDbE

http://analogsignature2.wixsite.com/analog/
thank you guys

go easy on me

[yassine]

No body wanna help changing the schematic come on guys help !