DELAY OFF TIMER ( 3vdc to 5vdc )

Some time timer circuits  required for some sort of delay while designing a project  but on a low  voltages we have to design such a special circuits which can even work by taking power from even mobile battery ,the IC 4001 is the best choice for it , even up to 4 timer can be made from one IC package  ( 4 Gates), a very stable & reliable time circuit , using of different values of Capacitor & resistor a different timer  interval can be possible to be made ,  this timer which can work on low voltages like 3vdc to 5 vdc ,this circuit can be used from 12 to 3V dc.