Dial tone generator (DTMF)

[Guest sealevel]

1.Are cineva vreo schema simpla a unui generator de tonuri DTMF? eventual cu piese care se gasesc pe la noi??2.Ar putea cineva sa-mi faca un generator ... conta cost bineinteles??Multam'

[one]

http://hem.passagen.se/communication/dtmfrec.html

http://hem.passagen.se/communication/pic/dtmf_rec.gif

http://www.electronic-circuits-diagrams ... ages/5.gif

 

Mitel 8870 DTMF <--- asta se gaseste sigur pe la noi. (=TC3500BP)

encoder-decoder.

[cristianp]

Generator DTMF cu microcontroler Atmel http://www.circuitcellar.com/avr2004/DA3713.html