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Hoffman Amps Forum image Author Topic: Lo pass (treble Bleed) w/shunt R  (Read 3354 times)

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Offline jjasilli

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Lo pass (treble Bleed) w/shunt R
« on: November 22, 2019, 04:01:17 pm »
I have read that phase is altered in the case of a lo pass filter with an R in series with C in the shunt leg: if the positions of the R & C are reversed.  But the sim below shows phase -- dashed lines -- to be the same.


Any comments?

Offline shooter

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Re: Lo pass (treble Bleed) w/shunt R
« Reply #1 on: November 22, 2019, 04:11:38 pm »
my understanding of phase;
L and C do shift, think ELI the ICE man, but R doesn't effect the phase, just frequency
but that came from 40yr old data in my brain so buyer beware  :icon_biggrin:
Went Class C for efficiency

Offline PRR

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Re: Lo pass (treble Bleed) w/shunt R
« Reply #2 on: November 22, 2019, 04:53:49 pm »
> I have read that phase is altered in the case of a lo pass filter with an R in series with C in the shunt leg: if the positions of the R & C are reversed.

Mis-written or mis-read.

Parts in series, nothing connected to the center, it does not matter what "order" they are in.

 


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