Multisim and Ultiboard

cancel
Showing results for 
Search instead for 
Did you mean: 

Circuit help!

Highlighted

so i have and and or operation, I believe that circuits are connected properly but the LED will not light. Can someone please explain?

0 Kudos
Message 1 of 2
(129 Views)
Highlighted

 

Hi 01AndyK,

 

 

The LED is supposed to be ON in these conditions:

 

  • x and y are both at 5 V regardless of the state of z
  • z is at 5 V regardless of the states of x and y

To test if the LED is functional, set all switches to 5 V. If the LED remains off then you may need to check your simulation settings such as Digital simulation mode. For example the default mode is 3.3 V logic level. You may also want to lower the resistance in series with the LED (e.g., 200 Ω, 300 Ω).

 

 

Best regards,

G. Goodwin

 

0 Kudos
Message 2 of 2
(66 Views)