[sdiy] Odp: Re: Semi-OT: odd capacitor values

[Colin Hinz]

On Sun, 28 Aug 2016, mskala at ansuz.sooke.bc.ca wrote:

> On Sat, 27 Aug 2016, Roman wrote:
>> 0.105MFD or 0.225MFD is a couple of hundred nanofarads, so they have not
>> gone down much at all.
>
> I think that's the point.  If MFD meant "millifarad" then it would imply
> the caps had gone down by a factor of a thousand or more to get from a
> fraction of a MFD to a few hundred nanofarads, and that is not plausible
> because the device still works, so MFD must mean "microfarad."

I'm sorry, but how is this even a point of discussion? The "MFD"
designation was standard nomenclature for "microfarad" well into the
late 1960s or early 1970s. Just like "cycles" for what we now refer
to as "Hertz". Have a look at old electronics textbooks to see
other examples of obsolete terminology.

- Colin


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