Re: Please clarify European resistor value notation for me

Nico Coesel wrote:

Eeyore <rabbitsfriendsandrelations@xxxxxxxxxxx> wrote:



Joerg wrote:


Eeyore wrote:

Joerg wrote:

Jim Thompson wrote:

Joerg <notthisjoergsch@xxxxxxxxxxxxxxxxxxxxx> wrote:


Just imagine a missing dot on a 2.2ohm inrush limiter and someone puts a
22ohm in there. Click - POOF.

The way I work a missing dot would get caught at LVS (layout versus
schematic), the netlists wouldn't match.

Well, yes, same here. But that doesn't help the poor guy who reads a
faded schematic and thinks, wow, I've got that 22ohms right here.


This is where the 'European' scheme wins hands down.

So how do they write 2.2 Ohms?

2R2.

In the 70s the idea was floated to use 'E' as in 2E2 - and I've seen it used a
few times but R ended up being adopted .


Strange. They taught us to use the E in college (somewhere in the
early 90's). But I've never seen E being used on a diagram other than
in that college. Says something about the teachers not updating their
knowledge. On the other hand, volts and amps still work the same way
:-)


AFAIR they used "E" for voltage at our university. That always made my hair stand up.

--
Regards, Joerg

http://www.analogconsultants.com
.