Various diagram

This is a very useful schema because we can use this schema to generate different music sounds by using UM66 .This schema operates with 3V power supply.We have given you UM66 schema diagrams before.In this schema we have used different parts.Because we got to know some electronic parts are not available in some counties






Note

 # Dont supply over 3V 
 # Build this schema on a PCB

This is so useful schema for us Because If our caller is in hold on position we can allow them to listen a music.When you want to operate this schema you can hold on your phone and switch on the S1. The RED wire from the phone jack is typically positive and the GREEN wire is negative or ground.