Hi,

I have searched the forum list, and found a 3 khz tone detector, but
I could'nt make it work,

is there any other simple way to make a tone detector but not with the lm567.

Please some one comment on this, thank you very much in advance
Kurnia Brahmana

 

Just whip up a twin-t filter - http://www-k.ext.ti.com/SRVS/Data/ti/KnowledgeBases/analog/document/faqs/ssttbphq.htm.

 

Hello,

Why don't you want to use the ne567?
There are lot of good examples with this IC.
Take a look at this page of the EDUCYPEDIA.
http://www.educypedia.be/electronics/pll.htm

An other way is make a sharp filter and detect the signal that is seen after the filter.

Greetings,
Bertus