Attenuation

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wst
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Joined: Sat Nov 24, 2007 10:06 am UTC

Attenuation

Postby wst » Wed Mar 15, 2017 9:40 pm UTC

So I'm ok using these formulae to come up with ideal values for attenuator components for T-pad attenuators Source

Given desired attenuation (K) and input (or output) impedance (Z), to find R1, R2 (R1 and R2 are equal) and (eventually - I'll skip this for brevity and for "figure it out yourself!"satisfaction) R3.

Image

Is there enough information here, if I know the values of R1 (or R2) and Z, to be able to find out what K is?
Anything I said pre-2014 that you want to quote me on, just run it past me to check I still agree with myself.

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Carmeister
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Re: Attenuation

Postby Carmeister » Thu Mar 16, 2017 12:19 am UTC

Image

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wst
Posts: 2608
Joined: Sat Nov 24, 2007 10:06 am UTC

Re: Attenuation

Postby wst » Fri Mar 17, 2017 1:08 pm UTC

Sweet. I might've got to that if I'd walked away and come back but I'd got my head well and truly mixed up. Cheers.
Anything I said pre-2014 that you want to quote me on, just run it past me to check I still agree with myself.


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