Re: Capacitance HELP

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Gerry  Reynolds" <gerryreynolds@xxxxxxxxxxxxx>

Hi Al,

You got most of it right.

f  = farads
uf = microfarads (10^-6)
nf = nanofarads  (10^-9)
pf = picofarads  (10^-12)
tf  = themptofarad (10^-15)  used in IC design  (hope spelled right)

MFD is also microfarads.  I dont remember ever hearing of capacitance 
expressed in millifarads so I suspect MF is also microfarads (just 
not sure on this one).

1000 tf = 1 pf
1000 pf = 1 nf
1000 nf = 1 uf

1000000 tf = 1 nf
1000000 pf = 1 uf
1000000 uf = 1 f

Hopes this helps,

Gerry R.



> Original poster: Allan & Sandra <allan_sandra@xxxxxxxxx>
>
> UF - what does the u stand for if the f stands for Farads
> i know there is nanofarads =NF
> Picofarads = PF
> When you use the capacitance formula for a plate type cap your 
> answer is in Picofarads,
> now if i wanted to make a cap with a value of 30NF my problem is i 
> would like to know what
> all of the different units are - UF,PF,NF,MF,F,MFD, ect.and in what 
> order and where they are
> before and after the decimal point.
> How many PF's are in a UF or NF
> which one of these is closest to the right of the decimal point and 
> what ones are the farthest
> and what ones are in between and in what order and what ones did i mis if any.
>
> Like a metric ruler you have MM  CM  ect. right up to Km or what 
> ever is before MM
> I have always hated metric
> Thanks in Advance