Electronic Devices - Diode Applications - Discussion
Discussion Forum : Diode Applications - General Questions (Q.No. 50)
50.
What is the logic function of this circuit?
Discussion:
3 comments Page 1 of 1.
P.gurnath said:
1 decade ago
Above circuit which satisfy the or condition how decided Positive logic OR gate why not choose Negative logic OR gate please tell me.
(1)
Sumanta said:
1 decade ago
With E1=0, E2=0 both the diodes are closed. So V0=0.
With E1=1, E2=0, E1 is open. V0=max(E1,E2)=1.
For both 1, both are on. so o/p=max. So, logical or gate.
With E1=1, E2=0, E1 is open. V0=max(E1,E2)=1.
For both 1, both are on. so o/p=max. So, logical or gate.
Millize said:
4 years ago
If negative logic then an output high level represents 0 and input high represents 1. If positive logic, output high level is 1 output low is 0.
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