DTMF INFRARED TRANSMITTER

  
Inside:
Repository
This transmitter uses a 5089 DTMF generator chip and a keypad to generate DTMF signals and modulate them on an IR light beam from an IR LED. Xtal is a 3.579-MHz TV burst crystal..
DTMF INFRARED TRANSMITTER - schematic




Leave Comment

characters left:

New Circuits

.