Thanks for the lead... unfortunately, a search on T7031 at that site comes up blank. I've also searched on 'audio activated' but nothing came up - how did you find it? I'll have a good look through the site tonight when I get home.
Thanks,
Peter
I'm a novice, I don't know much about electronics, but I'm enthusiastic and looking to learn....
I'm trying to find an audio activated circuit like one of those whistle key chains where a loud noise activates the circuit. I've taken one a part, but there appears to be some sort of surface...