100nF vs. 0.1uF

Some NNTP servers include 'NNTP posting Host:' when the headers are downloaded, and can be dropped by Nfilter. Then, you don't have to keep up with the pathetic screen names and his obcessions.

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I block his IP because it's simpler than a filter for each pseudonym.

...Jim Thompson

Well, you know, in general one should use the method that "removes all confusion" even when dealing with "professionals" who shouldn't "need" to be told the "proper rules" -- statistically you'll still be better off.

Of course, this does need to be balanced against efficiency as well -- this is why "professional shorthand" develops in the first place: It'd be ridiculous to write out "100 nanofarads" everywhere when "100nF" or even "100n" (or "0.1u", if you like) is sufficient.

Not making things as clear/foolproof as possible is bad engineering; I've given the example before here where it took a lot of arguing with some techs laying out a PCB to not place two identical connectors side by side, even though plugging the wrong cable into the wrong connector would destroy the board; they came back with the "oh, but only trained techs will be assembling these boards, they'd know better than to plug the cables in incorrectly!" ... despite their already having destroy a similar board due to this very problem.

Far too many people seem to think that *not* requiring them to be 100% perfect

You're entitled to your opinion...

So long as you approve of it, of course... right?

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Huh. I thought your filters would have trapped this conversation by=20 now. ;-)

--=20 Keith

Nah - he's got a secret troll fetish, which is understandable in a rabid neocon.

Cheers! Rich

Not one of you goddamned total retards has ever gotten a single call right.

Your mother was a neocon, you retarded f*ck.

Apparently you do not understand a goddamned thing about them, or you would know that my IP address is NOT under my control, therefore, I cannot "get a new address", as your retarded ass seems to think I can.

So... yeah, your grasp of the English language hovers slightly above nil, f*****ad. That's all an idiot like you is about.

Are you sure those are 1 microohm resistor? Nah, that would use a u ...

Many typewriters do not have a '1' (digit one) key, only the digits

I don't think so. The type of capacitor is not imbedded in its value.

Usually the schematic will state "All capacitors in uF unless otherwise stated" so 0.1uF could be written as 0.1.

Regards,

Boris Mohar

Got Knock? - see: Viatrack Printed Circuit Designs (among other things)

void _-void-_ in the obvious place

I use 1hnF (hecto nF), just to spoof the chinese copycsts

JKOC (Just Kidding Of Course)

it did seem an odd thing to say. I suppose one could mark the diagram saying that's what it means, but it would be likely to mislead and result in screwups, so not good practice.

NT

nF isn't in my employer's lexicon. The standardized nomenclature is

I've never seen that convention. How would you label a 100uF polarized cap, "100000nf"? BTW the 'f' should be capitalized in any case.

I think most of us use a '+' to denote a polarized capacitor. ;)

Cheers

Phil Hobbs

It helps show which end is which, too.

Ah, good point.

Strange, just a normal SI suffix. The mess is only in the case of kg, since kkg is not a valid designation of 1e3 of kilograms. Is the employer used to the ancient habit of expressing capacity in centimeters? :-)

That's exactly what they do with batteries, I see only 3600mAh instead of just 3.6Ah. On the market the more zeros the better...

Best regards, Piotr

Many years ago, I designed a product which used several non-polarized radial electrolytics. The markings on the case did not have any polarity markings, but did have the outer foil marked with the tradition arrow down one side. Back then, the PCB's were all hand stuffed. Production couldn't figure out which way to insert the capacitor because they couldn't find the "+" mark and didn't see anything on the silk screen to correspond to an outer foil arrow. Their method of de terming the orientation was to insert the lead with the outer foil arrow into the hole OPPOSITE the "+" mark. I was told that this was unlikely to ever change without firing every assembler on the assembly line.

I "solved" the problem by changing the silk screen to include a "+" near both leads. They wanted a "+" sign, so I gave them two. This later drove QA, management, techs and dealers insane, but at least I got the product out the door.