gauss...

[the guy who invented fire]

how can it be measured, and what are some typical numbers on some Duncan pups??? Let's see who really does their homewrk

[Benjy_26]

Re: gauss...

Homework?

my dog ate it.

[big_black]

Re: gauss...

Yeah, I come here to run away from that!

[Jester700]

Re: gauss...

It's called a GAUSSMETER

There is a device called a "hall effect device" that can be put in a cheap circuit to measure this. Radio Shack USED to have one for a couple bucks, but stopped carrying it. Arrow has it, but IIRC there's a minimum order amount for them.

I wanted to build a gaussmeter, since retail ones are expensive, but this project uses the discontinued piece:

http://my.execpc.com/~rhoadley/magmeter.htm

[Chaos]

Re: gauss...

Besides a good gauss meter, it would be very difficult to get accurate gauss measurements without having a precise holding fixture to replicate your testing (due to the fact that magnetic field strength follows the ‘inverse cube law’).

This means that if you double the distance from a reference point, the field strength will decrease by a cube factor
Or another way to put it, if your gauss meter read ‘1000’ at 1mm from a magnetic source, it would read ‘10’ at 2mm from the source.

Think about that next time you adjust your pickup height...

[Kent S.]

Re: gauss...

Interestingly though, the output voltage tends to follow the inverse square law ... double the distance of pup to strings, get a halving of the voltage.
Off topic, but I've got an old BOSS rocker distortion that uses a hall element instead of a pot to vary the level of distortion ... kinda cool actually, wish they'd bring that back, no pot to wear out, and no pot noise.

[Imp]

Re: gauss...

this sounds pretty interesting... its nice when you can use maths to look at stuff like this..