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Air core transformer design - RF Cafe Forums

Because of the high maintenance needed to monitor and filter spammers from the RF Cafe Forums, I decided that it would be best to just archive the pages to make all the good information posted in the past available for review. It is unfortunate that the scumbags of the world ruin an otherwise useful venue for people wanting to exchanged useful ideas and views. It seems that the more formal social media like Facebook pretty much dominate this kind of venue anymore anyway, so if you would like to post something on RF Cafe's Facebook page, please do.

Below are all of the forum threads, including all the responses to the original posts.


Eli Hait
Post subject: Air core transformer design Posted: Mon May 23, 2005 9:29 am
Hi,

I need to design a high-frequency, low power air core transformer implemented by conductors printed on PCB.

Does anyone know about an application notes, free software or java applet which cam assist me in this case

Thanx in advance
despair_eli


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Guest
Post subject: Air-core transformersPosted: Mon May 23, 2005 7:18 pm
What sort of frequency range and powers are you talking about?
Thanks!


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Guest
Post subject: Re: Air-core transformersPosted: Wed May 25, 2005 5:19 am
Guest wrote:
What sort of frequency range and powers are you talking about?
Thanks!


Less than 20mW....
About the frequency - since i'm dealing with miniature air core transformer it has to be several hundreds of MHz or even GHz...


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Guest
Post subject: Re: Air core transformer designPosted: Tue Jul 26, 2005 2:58 am
Eli Hait wrote:
Hi,

I need to design a high-frequency, low power air core transformer implemented by conductors printed on PCB.

Does anyone know about an application notes, free software or java applet which cam assist me in this case

Thanx in advance
despair_eli
[url][/url]


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Guest
Post subject: Posted: Tue Jul 26, 2005 11:46 am
So many people go to the trouble to ask questions on this website, but don't give any details for there requirments.

Are you designing a transformer? What's the impedance ratio? Is it balanced to unbalanced? What's the bandwidth? Center frequency?


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sshshah40@yahoo.com
Post subject: find out transformer capacity such that voltage drop acrossPosted: Mon Aug 22, 2005 11:03 am
find out transformer capacity such that voltage drop across this transformer is not more than 20% when 500kW motor is started.
(.8 power factor)




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