Why is the potential difference across a conducting diode zero?
The PD is small and approximately constant over a range of forward currents. In comparison with other voltages around the circuit, it is often convenient to think of it as 0 volts. (We may approximate 0.6V to 0 volts, especially when discussing applications where the difference does not matter. Alternatively, you can picture the discussion as involving idealized diodes.)Why is the potential difference across a conducting diode zero?
but then in explaining the working of the signal circuits of the OR and AND gates , i found the book assuming that there can be no potential difference across a diode
Pls refer to this youtube video from one of the best EEC professors in india(He says the same)
I shall wait for your reply.
This is the world of Real Engineering, in which insignificant quantities can be validly regarded as zero. ... In digital circuitry, we use 0 and 1 quite happily when neither of those voltage levels is actually 0 or 1.
I'm thinking that since this is a "Lecture Series on Electronics For Analog Signal Processing", the OP will need to understand the diode curve sooner or later.
Yea. I wish he/she would have given a link to the lecture on his/her first post. Just trying to justify my response to it.Oh yes, I agree but the link he gives in which the zero voltage drop statement is made is a lecture on diodes being used in logic circuits. He is taking what the teacher said, out of context.