Quick question!!

JioFunny · January 29

Connecting an AC multi socket that contains an emi-rfi noise filter to an AC single socket that contains an emi-rfi noise filter too.

It shouldn't cause any problem.. right?

Psittac · January 30

I'm not in the know to begin with, but shouldn't you be asking if it's even doing anything? I have yet to see a passive product that works. All I have seen is some capacitors and such. I know that something like a battery backup will clean power but am unsure of anything else.

I would imagine that filtered power going out into a power filter should be fine? I'd guess that any kind of backwards interference would be something you don't want in the first place.

But again I don't know the first thing on this topic other than it being debunked several times as snake oil.

Heats with Nvidia · January 30

It will only filter slightly more. Not that most of them do much in the first place.

JioFunny · February 5

On 1/30/2024 at 11:46 AM, Psittac said:

I'm not in the know to begin with, but shouldn't you be asking if it's even doing anything? I have yet to see a passive product that works. All I have seen is some capacitors and such. I know that something like a battery backup will clean power but am unsure of anything else.

I would imagine that filtered power going out into a power filter should be fine? I'd guess that any kind of backwards interference would be something you don't want in the first place.

But again I don't know the first thing on this topic other than it being debunked several times as snake oil.

On 1/30/2024 at 2:20 PM, Heats with Nvidia said:

It will only filter slightly more. Not that most of them do much in the first place.

So.. best way to filter noise is a line-interactive ups with battery? Shouldn't a servo power stabiliser do the same?

Heats with Nvidia · February 6

3 hours ago, JioFunny said:

So.. best way to filter noise is a line-interactive ups with battery? Shouldn't a servo power stabiliser do the same?

A servo stabiliser can only react really slow and stabilize the voltage against shifts that happen over the course of seconds and more. It can`t react to fast changes in the voltage like spikes that can happen, when for example a fridge starts its motor.

So if you need a constant voltage, for example for some older measurement equipment or you life in an area where the mains voltage is not very reliably stable, one of those is not a bad idea. But even in that scenario, a UPS is much better, since it can react to very fast spikes and blackouts.