Strange resistor nomenclature

[Jon Danniken]

Hello,

I've seen in a few schematics lately a resistor nomenclature that is new to
me, such as "6K8" or "4K7". In such a designation, what do the "8" and "7"
refer to? If it weren't for the added eight and seven, I would assume six
kilo-ohms and four kilo-ohms, but the added designators are confusing.

Thanks,

Jon

 

[Sean O'Byrne]

6k8 = 6800 Ohms (6.8 kOhms)
4k7 = 4700 Ohms (4.7 kOhms)
3M3 = 3300000 Ohms (3.3 MOhms)

Hope that helps,

Sean

 

[Jon Danniken]

Aha, thanks, Sean. Makes perfect sense now.

Jon

 

[JeffM]

"6K8" or "4K7" ?

Jon Danniken

It started in Europe.
It caught on elsewhere for practical reasons.
http://groups.google.com/group/sci....ng-*-decimal-point+8th-generation-photocopies

 

[Don Stauffer]

Hello,

I've seen in a few schematics lately a resistor nomenclature that is new to
me, such as "6K8" or "4K7". In such a designation, what do the "8" and "7"
refer to? If it weren't for the added eight and seven, I would assume six
kilo-ohms and four kilo-ohms, but the added designators are confusing.

Thanks,

Jon

I have seen even stranger nomenclature on capacitors. These were in
Nuts and Volts schematics. I forget now the exact format, but I was
never sure what those meant.

 

[nospam]

I've seen in a few schematics lately a resistor nomenclature that is new to
me, such as "6K8" or "4K7". In such a designation, what do the "8" and "7"
refer to? If it weren't for the added eight and seven, I would assume six
kilo-ohms and four kilo-ohms, but the added designators are confusing.

The SI system decimal multiplier prefix symbol is used in place of a
decimal point. Very sensible as decimal points are easily lost (or gained)
in poor quality print.

Where a multipler of 1 is needed the symbol representing the unit of
measurement is used instead.

0R47 would represent a 0.47 ohm resistor for example.

You can find a list of SI prefix multipliers and symbols here

http://civil.engr.siu.edu/labs/General_Topics/units.htm

 

[James T. White]

The SI system decimal multiplier prefix symbol is used in place of a
decimal point. Very sensible as decimal points are easily lost (or gained)
in poor quality print.

Where a multipler of 1 is needed the symbol representing the unit of
measurement is used instead.

0R47 would represent a 0.47 ohm resistor for example.

You can find a list of SI prefix multipliers and symbols here

http://civil.engr.siu.edu/labs/General_Topics/units.htm

Careful with this list.

m used for both milli and micro.
n for nono? I know what a nano-second is, but what the heck is is a
nono-second?

 

[nospam]

Careful with this list.

m used for both milli and micro.
n for nono? I know what a nano-second is, but what the heck is is a
nono-second?

Accepted, I didn't check this page it was just the first web reference I
found.

This one looks better
http://www.sengpielaudio.com/ConvPrefe.htm

Now I know what a nonillionvigintillion is. There's a word that doesn't get
many Google hits and all point to copies of the same page.

 

[Tom MacIntyre]

Careful with this list.

m used for both milli and micro.
n for nono? I know what a nano-second is, but what the heck is is a
nono-second?

A very small part of 7 of games that Nolan Ryan pitched?

Tom

 

[3T39]

Hello, James!
You wrote on Wed, 9 Nov 2005 15:00:36 -0600:

JTW> Careful with this list.

JTW> m used for both milli and micro.
JTW> n for nono? I know what a nano-second is, but what the heck is is a
JTW> nono-second?

Obviously thats no time at all

With best regards, 3T39. E-mail: [email protected]

 

[CWatters]

Aha, thanks, Sean. Makes perfect sense now.

Jon

Its to make sure that the decimal point doesn't get lost when documents are
copied.

 

[Boris Mohar]

Its to make sure that the decimal point doesn't get lost when documents are
copied.

It also saves one character space. Comes handy in crowded schematics.