At 03:04 PM 2/26/2003 -0500, you wrote:
> > Here's the story ... I contacted a company about building me
> > a custom inductor for a dc-dc converter.  I gave them the
> > freq, primary inductance and resistance, and secondary ratios
> > with resistances.  I got 2 pieces in the mail, but with no
> > spec/data sheet.
>
>Then contact them again and insist on spec sheet.  At the very least they
>owe you the pinout.

If they are a typical Asian company there should be a form with
test results for the numbered samples included. Including such
things as DCR, inductance and so on. No specs, just measurements.

Best regards,

Spehro Pefhany --"it's the network..."            "The Journey is the reward"
speff@interlog.com             Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog  Info for designers:  http://www.speff.com

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