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In the Forum: Analog Playback
In the Thread: The last phonocorrector: “End of Life" Phonostage
Post Subject: Make sure that your LC filtration works properly.Posted by Romy the Cat on: 8/31/2011
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 N-set wrote:
I'll scope the PSU soon to check the opreation. Caps, ok, I cantry that. Adjusting the caps--this battle is stillin front of me. Actually my plan was to adjust them in the circuit,  rather than desolder-adjust-resolder.
 Adjusting caps in LC filtration is irrelevant. In LC filtration the subject of your concern shell be not capacitance but the inductance. You do not run frequency specific circuit on B+ side and to you it shell be near irrelevant what lowest frequency of AC your power caps will shunt to ground. In contrary you would like to make sure that your choked have critical inductance and that you drown enough current with your bleeders. I would say that the whole idea of using the LC for this corrector on B+ side a bit questionable as the tube drown 2-3mA and a regular caps will be just fine. Still my love to LC took over all my rational.  So, circulate or measure that your chokes, in filaments and in B+ side both operate properly. LC filtration is way advance ONLY if the chokes works properly. 
 
The Cat

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