desperadogear
New Member
hi every body, i am facing the following problems with digital logic gates (I.C'S)
CD 4072( a 4 I/P or gate) , CD 4030 (AN EXOR GATE).
The circuit in all uses around ten digital ICs,(CD4072,CD4030,CD4015,74ls04, 74ls08, 74ls154,DTMF transmitter,reciever IC). Im using a power supply rated 5V 500mA DC.
Instead of logic 1 (5v) and logic 0(0v) , i got some strange values(1.90V, 2.24V.,etc) as output of 'some' gates.Has anyone else experienced this fuzzy behaviour..if yes what could have been the problem.
Im using a constant DC voltage of 5V. But after connecting supply to the circuit, The voltage across is shown as 4.53 V. I wonder where the rest of voltage dropped.
help greatly appreciated...
CD 4072( a 4 I/P or gate) , CD 4030 (AN EXOR GATE).
The circuit in all uses around ten digital ICs,(CD4072,CD4030,CD4015,74ls04, 74ls08, 74ls154,DTMF transmitter,reciever IC). Im using a power supply rated 5V 500mA DC.
Instead of logic 1 (5v) and logic 0(0v) , i got some strange values(1.90V, 2.24V.,etc) as output of 'some' gates.Has anyone else experienced this fuzzy behaviour..if yes what could have been the problem.
Im using a constant DC voltage of 5V. But after connecting supply to the circuit, The voltage across is shown as 4.53 V. I wonder where the rest of voltage dropped.
help greatly appreciated...