Hi.. can someone answer me this question?

I have a question in my paper which ask me to calculate some resistor values for some circuit design. After calculating, u get some random answer and it ask you for easily available component( store component value). For e.g. "1.09k ohm" will be "1K ohm" etc...

How can i or is there a way to know/memorize what values of the resistors value are commercially and easily available?

I hope someone understand me and give me an answer soon. Thanks a lot!

 

Hello,

Here is a list with standard E - series values:
http://www.educypedia.be/electronics/weerstanden-normalisatie.htm

This list comes from the EDUCYPEDIA page on component codes.
http://www.educypedia.be/electronics/datacomponent.htm

Greetings,
Bertus

 

wow.. how do i memorise all of them?

 

Hello,

The E12 is the most used series.
10 12 15 18 22 27 33 39 47 56 68 82
And this times .1 1 10 100 ....
The next value ia each time about 1.2 times higher.

The higher series E24 E48 E96 and E192 are for more exact schematics that do not except any tolerance.

Greetings,
Bertus

 

One of the main things I liked about my schooling in EE/CmpE was the fact that you rarely have to memorize trivial data, like common resistor values. Stuff like that is always in readily available documentation, and if you use something frequently enough, you'll memorize it w/o any effort.

Why do you need to memorize these?

 

I also keep a copy of the list of standard values as part of the PaintCAD package, which you can download in my AAC blog.