Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ.

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RE: The choke as parallel reactor draws a small amount of AC current.

Posted by shermanr@prw.net on May 7, 2009 at 21:34:42

In Reply to: The choke as parallel reactor draws a small amount of AC current. posted by Al Sekela on May 7, 2009 at 16:13:24:

At 60 Hz, a 193L just sits there in parallel with a reactance of 3015.33 Ohms.

We are talking steady state behavior, not transient.

It's probably the 'shock absorber' properties that make the difference you are noticing to line transients ?

The 193L will make the power factor ever so slightly more inductive, for whatever this may do to the loads in parallel. Maybe irrelevant.

Whether this makes an improvement, is probably another audioasylum subjective tweak.

Think of it's analogue as a capacitor charging up to a steady state DC value. Then what ?

My only question remains, why 193L ? Why not a smaller or larger value inductor ? Is that exact value of L important, and why so?

I fail to connect this tweak with the behaviour of an inductor at 60 Hz, to me it seems like the an "emperors clothes" tweak.

Inductance is almost always applied in series to choke out HF noise in power conditioners. Not much happens electrically in this scenario, apart from a very small increase of an almost un-measurable power factor degradation.

When you factor in the rest of the active residential AC loads, it get's lost in translation so to speak.

The fuse is for safety.

You can use a 1/4 amp or less, simply to protect the rest of the equipment in parallel.

The AC branch circuit breaker on the outlet may not trip in time if the 193L happens to short, unlikely, but then we have fire extinguishers handy when we least expect to need them.

This post is made possible by the generous support of people like you and our sponsors:

Herbie's Audio Lab

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