Hello,
i am breadboarding a TDA7052A power amp for instrumentation use. When the guitar jack isn't connected on the input socket i get a buzz sound, which is not too annoying, but i would like to know if this is normal or if its something wrong.
the schematic i'm building is in this site:
http://www.diystompboxes.com/smfforum/index.php?topic=99271.0
I know that this occurs from the fact that there is no ground connected in the input stage because when i touch the gnd pin of the socket (unconnected with the jack) the buzz stops.
i am breadboarding a TDA7052A power amp for instrumentation use. When the guitar jack isn't connected on the input socket i get a buzz sound, which is not too annoying, but i would like to know if this is normal or if its something wrong.
the schematic i'm building is in this site:
http://www.diystompboxes.com/smfforum/index.php?topic=99271.0
I know that this occurs from the fact that there is no ground connected in the input stage because when i touch the gnd pin of the socket (unconnected with the jack) the buzz stops.