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Technical Discussion => Misc. Technical Discussion => Topic started by: montmil on November 13, 2009, 06:15:23 PM

Title: Resistors-which end is +
Post by: montmil on November 13, 2009, 06:15:23 PM: For the electronic mavens, wizards and enthusiasts among us...

Which end of a resistor is the positive (+) end? Thanks for any help.

Monte
Title: Re: Resistors-which end is +
Post by: Bob_Roller on November 13, 2009, 06:20:14 PM: To the best of my knowledge, there is no polarity with a resistor .
Title: Re: Resistors-which end is +
Post by: nhmaf on November 13, 2009, 06:42:09 PM: There is no polarity with a resistor, but if you happen to have "special" type of resistor used in super- precision sensing applications, some are designed to have a current flow direction in a particular way. IF you're not building something for NASA's next telescope, then no worries, either way 'round is fine.

If you are READING the color code on the resistor, THEN there is a difference which end you start from.
Title: Re: Resistors-which end is +
Post by: Rob Valdez 79 R65 on November 13, 2009, 11:40:17 PM: When reading the colored bands, don't you start at the end closest to the end of the resistor?

Boy, that was a long time ago!

Correct - no polarity (for us common folk).
Title: Re: Resistors-which end is +
Post by: montmil on November 14, 2009, 04:32:28 AM: Thanks, gents. No worries now. Monte
Title: Re: Resistors-which end is +
Post by: Barry on November 14, 2009, 04:37:25 AM: I was taught this little ditty as an aid to remembering the resistor colour bands as an apprentice nearly 35 years ago.

Ok this is a bit rude but thats how remembered it!

Billy Brown R.... Only Young Girls But Virgins Go Without

Black Brown Red Orange Yellow Green Blue Violet Grey White
= 0 1 2 3 4 5 6 7 8 9

(http://)
Title: Re: Resistors-which end is +
Post by: montmil on November 14, 2009, 04:45:18 AM: Barry, I was waiting for someone to deliver the line. ::)

Here's another. Gotta be hundreds out there... Mnemonic, right?

Bad Boys Ravish Only Young Girls But Violet Gives Willingly
Title: Re: Resistors-which end is +
Post by: Barry on November 14, 2009, 04:58:31 AM: Quote
Mnemonic, right?

Monte Your a Scholar I'd have a hard time pronouncing that never mind spelling it.

Quote
For the electronic mavens, wizards and enthusiasts among us...

A maven is a trusted expert in a particular field, who seeks to pass knowledge on to others.

I learn't a new word today. We are all Mavens on this forum !
Title: Re: Resistors-which end is +
Post by: montmil on November 14, 2009, 06:08:20 AM: I'm married to a 33-year veteran teacher. SWWBO makes me do it again and again until I get it right... if you get my drift. ;)

Monte
Title: Re: Resistors-which end is +
Post by: nhmaf on November 14, 2009, 07:50:59 PM: Seems Monte and I went to the same school of ditties....
Title: Re: Resistors-which end is +
Post by: Lucky_Lou on November 15, 2009, 02:29:35 PM: Quote
When reading the colored bands, don't you start at the end closest to the end of the resistor?

Boy, that was a long time ago!

Correct - no polarity (for us common folk).

A very long time ago in a galaxy far far away....
We were taught to put the ring end to positive but theres no reason other than a tidy board unless your going to Mars with it !! its diodes that have to be in the right way if you want them to work.
Lou
Title: Re: Resistors-which end is +
Post by: montmil on November 15, 2009, 03:19:58 PM: Quote
Quote
... its diodes that have to be in the right way if you want them to work. Lou

THAT'S what I was thinking of! Thanks, Lou. I owe you a brew. [smiley=beerchug.gif] Check your fax machine. Monte