It looks like that Application Note is AN1543

http://mot-sps.com/lit/html/an1543.html




Eduardo Lopes De Souza Junior wrote:
>
> Hi Hamish
>    You'll find a source of ferrite cores for many of your projects at
> www.acm.components.philips.com They have a lot of types, and I hope you
> find one that match with you necessity.
>  I suggest you the application note for Electronic Lamp Ballast, at
> Motorola. Search for the AN153 (Electronic Lamp Ballast Design). It
> explains most of design especifications, with electronic FPC also.
>   Good luck with your project.
> Eduardo.
>
> Favor responder a pic microcontroller discussion list
>       <PICLIST@MITVMA.MIT.EDU>
>
> Para: PICLIST@MITVMA.MIT.EDU
> cc:    (bcc: EDUARDO LOPES DE SOUZA JUNIOR ELOPES/Embratel)
> Assunto:  [OT] ource for Small Ferrite Transformers for light ballast
>
> Hi
>
> I need a source for small ferrite transformers - the kind that are used for
> electronic light ballasts.  Part of a PIC based project that I am making
> needs to power a 230V 4W fluorescent tube from 12Vdc.
>
> Need something like:
>
> Vin 12V
> Vout 300V
> Turns ratio ~25
> Frequency 10-30kHz
> Current 300mA low V side.
>
> Alternatively, if anyone knows of a source for relatively cheap ballast
> kits, that would be great.
>
> Thanks
>
> Hamish