On 13 Nov 2003 23:49:49 GMT, (JGBOYLES) wrote:

need to id an inductor..its marked up 220..


22 pico-henries?

Flippin' 'eck! 22pH is probably less than the stray inductance of the
device itself!
Actually, I can never rememeber these codings either. I believe it's
22uH but if someone more knowledgable can post the key to the inductor
multipliers here it would be very helpful!
--

"I expect history will be kind to me, since I intend to write it."
- Winston Churchill

On Fri, 14 Nov 2003 10:01:15 +0100, "Dieter Mayr"
wrote:

Hi all

But red/red/black should be 22 micro Henry's , shouldn't it ?

73
Dieter, OE2CDM

220 is red-red-brown, usually, but you never know which standard they
follow, or perhaps they have their own standard, so even when they
write figures 220 could mean 22 or 220 µH, and pF if it was a
capacitor....

see the comments from W6WRT, too

73, LA8AK
http://home.online.no/~la8ak/
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On Fri, 14 Nov 2003 10:01:15 +0100, "Dieter Mayr"
wrote:

Hi all

But red/red/black should be 22 micro Henry's , shouldn't it ?

73
Dieter, OE2CDM

220 is red-red-brown, usually, but you never know which standard they
follow, or perhaps they have their own standard, so even when they
write figures 220 could mean 22 or 220 µH, and pF if it was a
capacitor....

see the comments from W6WRT, too

73, LA8AK
http://home.online.no/~la8ak/
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i know there is a code (japanese) that most/all the manufactors use, but i
just dont remember it!!!its the multiplier i cant remember!!
its not colour coded as i know that and thats always the same ie 22uh would
be red red black..2.2uh red red gold.
220nh red red silver.....

so i reccon its 22uh... taking the 0 as black. 220uh would be 221? 2.2mh 222
????

g0zen
"Bill Turner" wrote in message
...
On Thu, 13 Nov 2003 23:34:50 -0000, "zindazenda"
wrote:

need to id an inductor..its marked up 220..

i should know this but my minds gone blank...how does the coding go??
obviously first 2 digits are the value and last multiplyer so to
speak..so
22 what..nh?uh? etc

thanks..


__________________________________________________ _______

Unless you know the manufacturer and know their system, you must
measure. There are too many differences between makers. "Standards"
have long since gone by the wayside. Sorry.

--
Bill, W6WRT

i know there is a code (japanese) that most/all the manufactors use, but i
just dont remember it!!!its the multiplier i cant remember!!
its not colour coded as i know that and thats always the same ie 22uh would
be red red black..2.2uh red red gold.
220nh red red silver.....

so i reccon its 22uh... taking the 0 as black. 220uh would be 221? 2.2mh 222
????

g0zen
"Bill Turner" wrote in message
...
On Thu, 13 Nov 2003 23:34:50 -0000, "zindazenda"
wrote:

need to id an inductor..its marked up 220..

i should know this but my minds gone blank...how does the coding go??
obviously first 2 digits are the value and last multiplyer so to
speak..so
22 what..nh?uh? etc

thanks..


__________________________________________________ _______

Unless you know the manufacturer and know their system, you must
measure. There are too many differences between makers. "Standards"
have long since gone by the wayside. Sorry.

--
Bill, W6WRT

On Thu, 13 Nov 2003 23:34:50 +0000, zindazenda wrote:

need to id an inductor..its marked up 220..

i should know this but my minds gone blank...how does the coding go??
obviously first 2 digits are the value and last multiplyer so to speak..so
22 what..nh?uh? etc

thanks..

Most likely 22 micro Henries or possibly 220 micro Henries.

73,

Ed. EI9GQ.


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On Thu, 13 Nov 2003 23:34:50 +0000, zindazenda wrote:

need to id an inductor..its marked up 220..

i should know this but my minds gone blank...how does the coding go??
obviously first 2 digits are the value and last multiplyer so to speak..so
22 what..nh?uh? etc

thanks..

Most likely 22 micro Henries or possibly 220 micro Henries.

73,

Ed. EI9GQ.


--

Remove 'X' to reply by e-mail
http://homepage.eircom.net/~ei9gq
Linux 2.4.22

"zindazenda" wrote in message ...
need to id an inductor..its marked up 220..

i should know this but my minds gone blank...how does the coding go??
obviously first 2 digits are the value and last multiplyer so to speak..so
22 what..nh?uh? etc

thanks..

It is 22uh

Look it as if it was a resistor but instead of ohms you express it in microhenrys

Red red black is 22ohms so your inductor is 22uh

The multipliers are
Brown 10
Black 1
Gold 0.1
Silver 0.01

So if the colors was red red gold then it would be 2.2uh and so on

It took me weeks to realize that I was reading an 22uh inductor as 220uh

Thanasis

"zindazenda" wrote in message ...
need to id an inductor..its marked up 220..

i should know this but my minds gone blank...how does the coding go??
obviously first 2 digits are the value and last multiplyer so to speak..so
22 what..nh?uh? etc

thanks..

It is 22uh

Look it as if it was a resistor but instead of ohms you express it in microhenrys

Red red black is 22ohms so your inductor is 22uh

The multipliers are
Brown 10
Black 1
Gold 0.1
Silver 0.01

So if the colors was red red gold then it would be 2.2uh and so on

It took me weeks to realize that I was reading an 22uh inductor as 220uh

Thanasis

On Fri, 14 Nov 2003 12:33:36 -0800, Bill Turner
wrote:

On Thu, 13 Nov 2003 23:34:50 -0000, "zindazenda"
wrote:

need to id an inductor..its marked up 220..

i should know this but my minds gone blank...how does the coding go??
obviously first 2 digits are the value and last multiplyer so to speak..so
22 what..nh?uh? etc

ISTR a simple LC oscillator that, when coupled to a frequency counter,
enabled unknown/dubious inductors to be classified when oscillating
with a known Capacitor. Where did I see it?.