[time-nuts] Noise and non-linear behaviour of ferrite transformers

Tom Van Baak tvb at LeapSecond.com
Sat Jul 19 21:52:37 EDT 2014

Watch out for the tempco of transformers.
I ran into this with the TADD-1.
Removing the inductors/transformers improved the tempco by 15x.



----- Original Message ----- 
From: "Attila Kinali" <attila at kinali.ch>
To: <time-nuts at febo.com>
Sent: Saturday, July 19, 2014 3:09 PM
Subject: [time-nuts] Noise and non-linear behaviour of ferrite transformers

> Hi,
> I'm currently looking at some way of breaking the ground loop between
> several systems. The obvious idea would be to use transformers. I would
> like to have some kind of rule of thumb to guess how much noise such
> a transformer would add. But unfortunately i cannot find any theory
> or measurements of this. Does anyone have some pointers to documents
> on what kind of noise i could expect (type, and strength) and
> what/how strong the non-linear behaviour of transformers would be?
> Thanks in advance
> Attila Kinali
> PS: although this started as something with a real application in mind,
> i'm now interested in this as an endavour of its own. So all and any data,
> theory or rule of thumb would be appreciated

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