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Low buck filament chokes ac in saturation.

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Posted on September 14, 2020 at 05:10:17
amnesiac
Audiophile

Posts: 717
Joined: August 21, 2002
Hi I Am curious if I could use small 6.3 volt 2 amp ac ei transformers for filament chokes one on each side of a 1amp dc filament.. I was wondering what sort of filtering beneficial or benign would I get from a trans in saturation? Would the trans saturating and the capacitance filter diode noise or would it ring or create some other bad noise and what sort of heating could there be? I am guessing inductance may not be high and what of possible hum both external and on the line? I haven't bought the trans so I don't know if I could gap them or not. I remember once reading about saturating trans being used as line conditioners.

 

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RE: Low buck filament chokes ac in saturation. , posted on September 21, 2020 at 10:08:46
GeorgePope
Audiophile

Posts: 102
Location: Havant , UK
Joined: March 15, 2017
Ungapped so probably not of much use but, I suppose you could hacksaw a gap and measure to see what you've got . If it's crap , bin it and move on :)

The cheap Triad chokes available from Mouser may be a reasonably priced solution or do what I do when I need chokes : find a local winder to custom wind on M6 cores to whatever required spec

George

 

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