Bare Knuckle Pickups Forum

Forum Ringside => Tech => Topic started by: gwEm on May 26, 2008, 01:37:07 PM

Title: can I tell visually if a p'up magnet is alnico or ceramic?
Post by: gwEm on May 26, 2008, 01:37:07 PM

Just like the topic says ;) thanks!

Title: can I tell visually if a p'up magnet is alnico or ceramic?
Post by: FELINEGUITARS on May 26, 2008, 01:44:06 PM

Ceramic magnets are usually black whilst alnico ones are steel coloured if polished - not sure about unpolished though

Title: can I tell visually if a p'up magnet is alnico or ceramic?
Post by: gwEm on May 26, 2008, 02:27:41 PM

thanks feline, maybe this is a polished alnico magnet in the V90...

Title: can I tell visually if a p'up magnet is alnico or ceramic?
Post by: WezV on May 26, 2008, 02:45:47 PM

you can test with a multimeter - alnico is conductive wheras ceramic isnt

Title: can I tell visually if a p'up magnet is alnico or ceramic?
Post by: FELINEGUITARS on May 26, 2008, 03:20:09 PM

Quote from: WezV

you can test with a multimeter - alnico is conductive wheras ceramic isnt

Good call!

Title: can I tell visually if a p'up magnet is alnico or ceramic?
Post by: gwEm on May 26, 2008, 03:34:37 PM

definately alnico, unless what i think is the magnet is actually some sort of metal spacer. nice tip with the multimeter wez!! :)

Title: can I tell visually if a p'up magnet is alnico or ceramic?
Post by: WezV on May 26, 2008, 03:37:09 PM

thanks to some trading with ToneMonkey i happened to be reading through a copy of Jason Lollars pickup winding book yesterday

it has some handy hints on identifying magnets

Title: can I tell visually if a p'up magnet is alnico or ceramic?
Post by: WezV on May 26, 2008, 03:37:46 PM

Quote from: gwEm

definately alnico, unless what i think is the magnet is actually some sort of metal spacer.

er - obviously the other test - is it magnetic :P

Title: can I tell visually if a p'up magnet is alnico or ceramic?
Post by: gwEm on May 26, 2008, 03:40:56 PM

Quote from: WezV

Quote from: gwEm

definately alnico, unless what i think is the magnet is actually some sort of metal spacer.

er - obviously the other test - is it magnetic :P

:) :) cheers wez

well, its not the strongest magent thats for sure... however it is the thing lablelled "alnico V magnet" in this diagram... so i'm sure its the magnet... and i'm sure (now) its some sort of alnico. i don't know what strength.

the winding is 14k-ish - symmetric - its probably AV then.