Re: Do active filters even care about input/output impedances?



Active circuits design assumes that the driving impedance is zero and
that the terminating impedance is infinite.

It is up to follow-on circuit designers to include analysis of the
effects of the surrounding impedances in which a paricular circuit is
embedded.

If you are not capable of doing this then you are not qualified to do
the job anyway. Pass it on to somebody who knows what he is doing.
----
Reg


.



Relevant Pages

  • Re: Do active filters even care about input/output impedances?
    ... Reg Edwards wrote: ... > Active circuits design assumes that the driving impedance is zero and ... > that the terminating impedance is infinite. ...
    (sci.electronics.design)
  • Re: Androcles logic (was Bilges logic)
    ... The characteristic impedance is the same from ... |>across the resistor ranging from V at DC to 0 at infinite frequency, ... |>At the RESONANT frequency of the coil and capacitor, ... if you double the length of coax, ...
    (sci.physics.relativity)
  • Re: The truth about decibels
    ... >>Kevin Aylward wrote... ... >>> impedance is, essentially, infinite. ... >>Two straight pieces of wire have infinite Impedance at DC? ... > When a transmission line is connected to a DC voltage, ...
    (sci.electronics.design)
  • Re: The truth about decibels
    ... >> impedance is, essentially, infinite. ... >Two straight pieces of wire have infinite Impedance at DC? ... When a transmission line is connected to a DC voltage, ... characteristic impedance, but only for as long as it takes the pulse ...
    (sci.electronics.design)
  • Re: Androcles logic (was Bilges logic)
    ... >| Androcles writes ... >across the resistor ranging from V at DC to 0 at infinite frequency, ... >So for frequencies greater than resonant, the impedance falls to zero. ...
    (sci.physics.relativity)