I was hoping someone could point me in the right direction. Attached is a basic digital to analogue converter and my task is to calculate the values for every possible sequence of inputs. I am entirely fine when it comes to calculating the output when there's a single input on the circuit but I'm having trouble with when there is multiple inputs.
For example, in the attached image inputs A and B are on. I am attempting to simplify the circuit to a purely series or parallel circuit and from there calculating the rest of the values but I am having trouble getting my head around what R2 is doing. I mean, it's not really in parallel or series with anything. It seems to form some sort of triangle with R6 and R5 and I can't figure out the best way to approach it.
Any advise?
For example, in the attached image inputs A and B are on. I am attempting to simplify the circuit to a purely series or parallel circuit and from there calculating the rest of the values but I am having trouble getting my head around what R2 is doing. I mean, it's not really in parallel or series with anything. It seems to form some sort of triangle with R6 and R5 and I can't figure out the best way to approach it.
Any advise?
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