HELP! Intercom

[whoshotben]

i'm making an intercom for my GCSE Electronics project, i'm completely stuck could someone please help me out, i'd be very grateful, email me at who_shot_gentleben@hotmail.com or just reply to this.

p.s. could you keep it as simple as possible

Cheers, Benji 8)

 

[Phasor]

Have a look at:
**broken link removed**

 

[wovk]

Phasor :

it's hard to get a circuit simpler of that one...
nice link!

 

[bogdanfirst]

that's right. the circuit is simple and works very fine. well you might replace the transistor and the components near it with a transformer, an increaser transformer, so you get a highter voltage for the input of the lm386, but it works better with a transitor.
another idea will be to replace the transitor and the speaker used as a microphone with an electret mic. but you will need 2 speakers and 2 mics and much more wire...........
so it is a good circuit as it is.