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

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RE: Got line EMI noise reading, now what?

Posted by Uncle Mike on July 31, 2022 at 13:32:10

In Reply to: Got line EMI noise reading, now what? posted by Funky Bob on July 31, 2022 at 04:57:09:

Good for you! You actually measured to see if you have noise. I looked it up to see what documentation they might provide. The "hash" you are seeing (or hearing) can probably be addressed with a couple X and Y rated capacitors. There is a line filter tweak worked out by Jon Risch that works well to neutralize much of this and RFI. You can find it on his web site linked.
Another inmate, Al Sekela, had posted what he was doing using only X & Y rated capacitors. You'll have to dig as there are many posts to go through using the search.
If you want to understand what is going on and have some knowledge of electricity look up "capacitive reactance".

Added: I was looking and saw this in the "Trader".
https://www.audioasylumtrader.com/ca/listing/Power-Conditioner-Surge-Protector/EconoTweaks/D.I.Y./Parallel-AC-Filter-Board-CRYO-39-ED/118751

Added II: maybe something as simple as this? Have you looked to see your equipment is already equipped with something like this.....

• https://www.geocities.ws/jonrisch/surge.htm   (Open in New Window)

Edits: 07/31/22 07/31/22 07/31/22 07/31/22 07/31/22 07/31/22

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