# Z transform, Integrator.

Discussion in 'Electronic Design' started by boki, Oct 8, 2003.

1. ### bokiGuest

Hi, All:

Could you please explain these integrators differece?

1. 1/(1-z^(-1))
2. z^(-1)/(1-z^(-1))
3. Tz^(-1)/(1-z^(-1))

Thanks a lot!

Boki.

2. ### Jeroen VriesmanGuest

it that a homework question?

They are all the same, as 1, exept 2 has one sample period delay, and 3 has
one sample period delay and a T times the output.

3. ### Tom BruhnsGuest

Seems like homework...or if you're just learning on your own, I think
you'll be better served by thinking it through yourself anyway. But
here are a couple things to ponder:

Think about where the poles and zeros are. What's the difference
between 1 and 2--and what does that difference represent? (That is,
in a block diagram representation, can you see a common block and a
block that one has and the other does not? And what does that
different block represent?)

Cheers,
Tom

4. ### Robert MonsenGuest

^^^^^^^^

So, is 'boki' a bot? An 'automatic' TA? An autotroll?

Whats the deal? The questions seem varied in level and, well, oddly worded.

Regards,
Bob Monsen

5. ### Walter HarleyGuest

worded.

Oddly spelled, too.