Intercom station design calculation with LM386

[Hilario1]

Hie

May anyone help me with design calculations for a two station intercom using LM396.

Regards

Hilario

 

[audioguru2]

Hi Hilario,
Welcome to our forum. ;D
The LM386 is a low power audio amp with enough gain to be an intercom station. If you use two stations connected together then they will make acoustical feedback howling, unless you use a manual push-to-talk switch or an automatic circuit to detect a voice and switch it through.

What design calculations do you need? ???

 

[hotwaterwizard2]

Datasheet LM386
http://www2.national.com/ads-cgi/viewer.pl/ds/LM/LM386.pdf

Intercom LM386
http://electronickits.com/kit/complete/surv/ck204.pdf