(*steve*) submitted a new resource:
Resistors, Capacitors, Zener diodes... Why the funny values? - An explanation of the E-series and why those funny values are used.
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Resistors, Capacitors, Zener diodes... Why the funny values? - An explanation of the E-series and why those funny values are used.
You might wonder why you can't always get the value of resistor you want. 6Ω sounds easy, right? What about capacitors. Why 470uF and not 500uF? Are these chosen at random? Why, why, why do they seem to want to make it hard for me? And why aren't there more resistor values between 1kΩ and 10kΩ than there are between 1Ω and 10Ω. Does that mean the higher value resistors are less accurate or something?
The numbers are not chosen arbitrarily at all. There is some (not a lot) of maths...
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