[VOX is not working - any help?]

Hi audioguru,
I did as you said and I tried every possible way.
With that configuration, the circuit is not responding at all.
That was it; we have spend too much time for nothing;
I will try to find other circuit unless if you or someone else have to sagest something else.
Anyway , Thank you for your time;

[VOX is not working - any help?]

Hi again Audioguru,
Yes i am using a 9v battery and the LM358 is installed at the right way, If an electret mic connected Instead of dynamic mic the circuit is not responding and also there is no high temperature at the LM358.
Anyway, can you show me how to modify the circuit in order to use an electret mic?

[VOX is not working - any help?]

Well here it is, unfortunately, there was no schematic diagram with the KIT so I tried to make it of my own and I hope to be right.

I tried to use a dynamic microphone as you told me to do and also a small speaker (0,4w 8ohm) but the circuit it seems to be

[VOX is not working - any help?]

Oh audioguru, I guess you are right. Tank you.
I am going to test it and then post it back here for the public.
By the way, do you know any similar circuit using electret microphone to sagest?

[VOX is not working - any help?]

As I can understand, there is not enough input sensitivity from the mic in order to trigger the circuit. When I tried to connect, the input pins A & B (mic input) with a piece of wire then it was working good.
What is wrong?

[Controlling Sony CDX-601 cd changer at home]

Thank you Ante for your suggestion. ;)

[Controlling Sony CDX-601 cd changer at home]

Need Circuit to Control the Sony cdx-601 car 10cd changer at home
Recently someone has stolen my car system but not the cd changer.
Without the Sony car stereo there is no way to operate the cd changer!
Can anyone help me build a controlling circuit to operate the cdx-601 at home?

[Electronic Stethoscope 2]

the pic of E.S. - 2

[Electronic Stethoscope 2]

Ones I tried to build an Electronic Stethoscope from Elector electronics magazine with no luck. ???
Now, it is about time to build the E.S.-2 from Audioguru and see what happens.

For those how would like to build the Electronic Stethoscope