In article , Theo Markettos
scribeth thus
Terry Casey wrote:
Anybody who thinks that the ranges of resistor values follow some weird
random sequence might like to look at this drawing I produced which shows
how neatly the values in the various ranges neatly dovetail together:

https://dl.dropboxusercontent.com/u/24301298/Res_Tolerance.png

That's a very nice plot!

The other thing I find myself doing is thinking 'it's a 430 ohm resistor so
I have to replace it with one' rather than wondering 'so what is it actually
doing?'. If it sets the current for an LED, say, it doesn't really matter
if it's 390 or 470. If it's in some precision measuring circuit then maybe
it does.

On the other hand, if a resistor is marked 10.0 K (eg 4 value bands or 4
printed numbers - 1002) then that means it is a high precision resistor and
you might want to pay more attention.

Theo

I've been fixing an Orban broadcast processor and if they want a
particular ressy .. then they just get them made;!..


R128a,b Resistor Set, MF; 2.00K 28520-002 ORB 3
R136a,b Resistor Set, MF; 13.3K/10.2K 28522-003 ORB 3
R139a,b Resistor Set, MF; 4.64K/4.53K 28522-005 ORB 3
R146a,b Resistor Set, MF; 13.3K/10.2K 28522-003 ORB 3
R148a,b Resistor Set, MF; 4.53K/3.01K 28522-004 ORB 3


20130.162.01 RESISTOR, 1/8W, 1%, 1.62K R69 R70
20130.200.01 RESISTOR, 2.00K R124
20130.221.01 RESISTOR, 2.21K R19
20130.332.01 RESISTOR, 1% 3.32K R76 R140
20130.365.01 RESISTOR, 1/8W, 1%, 3.65K R90
20130.475.01 RESISTOR, 4.75K R31 R32 R33 R34
20130.562.01 RESISTOR, 1/8W, 1%, 5.62K R75
20131.140.01 RESISTOR, 14.0K R126 R87
20131.200.01 RESISTOR, 20.0K 1% R88
20131.301.01 RESISTOR, 30.1K R141
20131.499.01 RESISTOR, 1/8W, 1%, 49.9K R23
--
Tony Sayer