Go Down

### Topic: Arduino circuit/breadboard not working at higher voltage? (Read 24633 times)previous topic - next topic

#### xl97 #30
##### Feb 24, 2011, 05:54 pm
hi..sorry I dont understand the equation?

this portion is just a regular 'chart'..right?

one =    1.0
tenths =         0.1 (1x10E-1)
hundredths = 0.01 (1x10E-2)
milli    =             .001 (1x10E-3) m
micro =             .000 001 (1x10E-6) u
nano =              .000 000 001 (1x10E-9) n
pico =               .000 000 000 001 (1x10E-12) p

(although i dont understand the stuff in parentheses)

ie:
(1x10E-1)
(1x10E-2)
(1x10E-3) m
(1x10E-6) u
(1x10E-9) n
(1x10E-12) p

although the letter extension at the end make sense..

but this:

100 nanoF = 100 x 10E-9 => 1x10E-7 => 0.1x10E-6 = 0.1uF

I am unclear on (sorry for being a bit thick here) #31
##### Feb 24, 2011, 06:35 pm
1x10E-6 is scientific notation for 1 micro-something .
1x10E-9 is scientific notation for 1 nano-something.

E means exponent - similalrly 10x10 = 1x10E2. 0.1x0.1 = .001, or 1x10E-2. A convenient way to show the portion of the number of interest without showing all the 0's.
When you multiply by 10, 100, 1000 you just move the decimal point around.
Move it to the right for 10, 100, 1000, E increases by 1 for each decimal place
56 = 5.6x10E1,
560 = 5.6x10E2,
5600 = 5.6x10E3

Move it to the left or 0.1, 0.01, 0.001. E decreases by 1 for each decimal place.
.56 = 5.6x10E-1
.056 = 5.6x10E-2
.0056 = 5.6x10E-3

so if you have 100 nano-somethings, that is written as 100.0 x10E-9
move the decimal point 2 place left to get rid of the 0s = 1.0 x10E-7
10E-7 is not in the list above, so move it one more place  = 0.1x10E-6
thus 100nF is the more commonly seen 0.1uF.

Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

Go Up