> There still has been no response from any inductor
> gurus here about building a good analogue inductance
> meter?

I don't 'buy' when I can buy the best (HP, etc) for only
pennies on the dollar (eBay and other sources like
hamfets) or use a network analyzer and get *exact*,
reliable results - often at the very frequency of
interest versus some other 'test' frequency that
simple meters use ...

Besides, these cheaper designs won't give you "Q"
which is an important parameter to me ...


How about this:

o .001 uHy (1 nHy) to 100 mHy (most units measure to 150 mHy)
o .010 pf to 1 uF (most units measure to 1.5 uF)
o AUTOMATIC RANGING
o 1% of reading typical -

- Typical means the average error of  83 different components compared to
an:

 o HP4275A digital L/C meter (test frequency 1MHz) for
    components ranging from .1uHy to 1mHy and 2.7pf to .068uF,
 o B&K 878 digital LCR meter (test frequency 1KHz) for
    components ranging from 1mHy to 100mHy and .1uF to 1.6uF.

http://www.aade.com/lcmeter.htm



>
> Surely all it needs is an oscillator using the
> inductor under test, and an analogue meter showing
> freq which is then calibrated in uH??

You have just described the Boonton 260A - except for the
additinal circuitry that allows measurement of the
"Q" of the tuned circuit!


RF Jim



> -Roman
>

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