Sujet : Re: those coupled drum core inductors
De : bill.sloman (at) *nospam* ieee.org (Bill Sloman)
Groupes : sci.electronics.designDate : 16. Mar 2025, 15:30:45
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <vr6nam$1uiad$1@dont-email.me>
References : 1
User-Agent : Mozilla Thunderbird
On 17/03/2025 1:15 am, john larkin wrote:
https://www.dropbox.com/scl/fi/cd8gxmlrar3kvv3iz36xe/Mu_twin.jpg?rlkey=dvl8e7fbtjnzz3l9q9urkyyfn&raw=1
https://www.dropbox.com/scl/fi/nm1ksdn7eufm90ol0b0ec/Murata_Coupled_1.jpg?rlkey=e7yvk464xupz4axy7lt6zj3zk&raw=1
I was surprised to get K=0.6 by just putting them along side.
Why? And your second url doesn't exactly make the point in a way that is easy to follow.
The ferrite in the drums has permeability that is about a thousand times higher than that of free space, so the adjacent drum is going to suck in a whole lot of flux lines.
The transformer equations are
V1=L1.dI1/dt+M.dI2/dt
V2=M.dI1/dt+L2.dI2/dt
where M=K.sqrt(L1.L2)
-- Bill Sloman, Sydney
those coupled drum core inductors
Re: those coupled drum core inductors
