[Ronja] Progress report

[Silvije]

although I havent been buying such things, as I always find something
usefull in my electronic junk box :) this may be it

http://export.farnell.com/jsp/search/browse.jsp?N=500006+1000242&Ntk=gensearch_001&Ntt=transformer+core&Ntx=

from the main page at http://www.farnell.com/ it seems it should be easily 
available in large region

there are probably lot more electronic components distributors, like RS 
and others but this is first I could think of..

regards


On Tue, 3 Feb 2009, Karel Kulhavy wrote:

> ---- Silvije <discover at fly.srk.fer.hr> schrieb:
>>
>> That sounds great!
>> Very digital :)
>>
>> if I just may point out that "analog" solution could be as simple as
>> http://repairfaq.cis.upenn.edu/sam/teeny.gif
>>
>> so if you have 12V supply, I believe you could easily use 2n3904 and
>> would not need more than lets say 4,6 turns in primary and about 24-30
>> turns in secondary of one little transformer... check the part count :)
>> just one transistor :)
>>
>> btw. for making such little transformers I use to "modify" inductors
>> "transformer like" from PCBs of burned ccflamps, there you can also
>> find some realy fine high voltage capacitors (400V) and other stuff, if it
>> is problem for someone to get them :)
>
> Do you know a source of new (not removed from broken electronics) standardized transformer cores that are easily available everywhere?
>
> Karel
>