[SEL] Magnet meter

[Ed stoller]

Hello Don,

I don't have any more of the printed circuit boards, but I ordered 10 of 
the less sensitive Hall-Effect sensors about a year ago. It took 4 months to 
get them.I think the sensor we originally used was too sensitive to use 
directly on the magnet as it saturated. So all I can help you with at this 
time is the sensor which will cost about as much as the envelope and postage 
to send it to you. I made about 15 of the magnet meters  a few years ago and 
maybe there are some out there that are not being used that some one could 
part with. I use mine mostly on small air cooled engine flywheel magnets.

The project was a little poorly conceived in that the good magneto guys just 
hold a magnet up to there favorite I beam and pull it off and know whether 
it is good or not. I have always wanted to make a measurement of the magnet 
while still installed in the magneto to get a good idea of its condition 
before removing it. All I have to work with is the Type R on my FMZ 2 HP.

Ed Stoller
New Fairfield, CT
http://home.earthlink.net/~edstoller/

----- Original Message ----- 
From: "don." <don.h at wcoil.com>
To: "The SEL email discussion list" <sel at lists.stationary-engine.com>
Sent: Saturday, March 17, 2007 12:36 PM
Subject: Re: [SEL] Magnet meter


> hey Eldon I want one of those
> Don in Ohio where the sun is shineing!!!!!!
> ----- Original Message ----- 
> From: "Elden DuRand" <edurand at mchsi.com>
> To: "The SEL email discussion list" <sel at lists.stationary-engine.com>
> Sent: Saturday, March 17, 2007 11:55 AM
> Subject: [SEL] Magnet meter
>
>
>> Hello, Ed:
>>
>> If anyone wants to see more about the meter, they can go to:
>>
>> http://www.oldengine.org/members/durand/Gaussmeter/gaussmtr.html
>>
>> Take care - Elden
>> edurand at mchsi.com
>> http://www.oldengine.org/members/durand
>>
>> -----Original Message-----
>> From: owner-stationary-engine at newidea.atis.net
>> [mailto:owner-stationary-engine at newidea.atis.net]On Behalf Of Ed & Bev
>> Sent: Tuesday, July 01, 2003 07:37 PM
>> To: stationary-engine at atis.net
>> Cc: stationary-engine at oldengine.org
>> Subject: Magnet Meter
>>
>>
>> Did you ever wish you could use your digital volt meter to measure the
>> strength and polarity of a magnetic field? Or actually measure the
>> strength of a magnet before  and after remagnetizing? If so, you might be
>> interested in this relatively simple voltmeter accessory . It is a Gauss
>> Meter.
>>
>> With a lot of help from Elden, we have put together  a little circuit
>> board ( 1/2 X 2 inches ) which has the  Linear Hall-Effect sensor and
>> supporting electronics on it. To use the Gauss Meter you have to provide 
>> a
>> 9 to 12 battery for power and a volt meter to measure the output voltage
>> or package it as a standalone instrument like Elden is doing. The main
>> ingredients of this project is a  battery , a small circuit board and 
>> five
>> electronic components.
>>
>> If anyone wants to try this project, we might consolidate the parts order
>> and , if warranted, have a vender make the PC boards. A WAG at the cost 
>> is
>> $10 to $15. I have more in shipping and handling than parts so it is hard
>> to estimate. I need to keep this short and can send pictures  / electric
>> cartoons off list. So let me know if you might be interested.
>>
>> Ed Stoller
>> New Fairfield, CT
>> Drop the spaces.
>> edstoller @ earthlink . net
>>
>>
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