writes:
>Dan,
>
>
>I tried to find the parts for the converter locally but was
>unsuccessful so
>I accessed Digikey as you had suggested. I'M LOST! I'm not familiar
>enough
>with electronics to be able to tell which parts I need. For example,
>the R1
>50K Multi-Turn Trim-pot. There are many types to choose from and
>since I
>don't know enough about it, I can't decide which one to get. Same
>with the
>L1 250uH (coil,inductor?). The LT1070 I found and is part number
>LT1070CT-ND.
>
Just wanted to let you know that I'm still working on the schematic of
the 12 to 18 volt converter with help on winding your own inductors and
where to get the parts. A parts lay-out and a help as you go text for
the faint of heart. This will be assisted by John Downs who wound my
coils and the procedure we used to make the converters, Cookbook style.

ric
curator of the Willard Observatory
San Marcos, California
216 xt images at:
http://members.aol.com/rlecker/optas.html

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