Tuesday, 8 March 2011

Resistors

I am going to calculate the resistors
I toock 6 resistors with diferent values and calculated them manualy and then with a multimeter to confirm my result.the resistors have colour codes and every coulure has a value,the first two bands is the numbers you write down and the next band is the multiplier
the colour values are:
black:0
brown:1
red:2
orange:3
yellow:4                                                                      
green:5
blue:6
violet:7
grey:8
white:9
The picture on the top is a good example of how to work out the values of the coulors.I got this picture from www.reuk.co.uk
The first resistor i calculated was red,red,yellow,gold.I got a result of 220kohm because red is2 and the yellow is 4 wich is the amount of zeros and a 1000=1kohm and with the multimeter it was 212.9kohm and i have a 5%tolerance wich i stayd in.because I can go as low as 209ohm
the other results was as folowing
value(colour codes)                                                  value(multimeter)
brown,black,brown,gold               
100ohm,5%tolerance=95-105Ohm                                  98.4ohm
brown,black,green,gold
1mega ohm,5%tolerance=.950-1050MOhm                      .993mega ohm
brown,black,orange,gold
10kohm,5%tolerance=9.5-10.5KOhm                               9.98kohm
brown,black,red,gold                              
1kohm,5%tolerance=.950-1.05KOhm                               .992kohm
yellow,violet,black,black,brown
470ohm 1%tolerance=446.5-493.5Ohm                            470ohm

all my results were within tolerance givin so was done corectly
refrences:www.reuk.co.uk

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