tag:blogger.com,1999:blog-2878031054271009109.post7211999091976604975..comments2024-03-22T15:15:47.060+08:00Comments on Lu Le Laboratory: How to make the simplest magnetometer ?Le Luhttp://www.blogger.com/profile/02630054521054204359noreply@blogger.comBlogger24125tag:blogger.com,1999:blog-2878031054271009109.post-23277743319962939812017-03-22T00:48:38.245+08:002017-03-22T00:48:38.245+08:00could you explain how you got the 0.45 ohms resist...could you explain how you got the 0.45 ohms resistance and the length of the wire as 23.8 mm?applied electronics engineeringhttp://appliedelectronicsengineering.blogspot.comnoreply@blogger.comtag:blogger.com,1999:blog-2878031054271009109.post-17816260074753279982016-09-11T00:51:19.347+08:002016-09-11T00:51:19.347+08:00i want to make a magneto meter , that can detect ...i want to make a magneto meter , that can detect and measure the magnetism of a fero material object burried under ground , like rifle , iron pipe drum etc, and this video is not helping me, please email me , i will be much obliged , owaistoru@live.comman on firehttps://www.blogger.com/profile/00096195987128493868noreply@blogger.comtag:blogger.com,1999:blog-2878031054271009109.post-5265500728685840472015-08-27T02:01:03.525+08:002015-08-27T02:01:03.525+08:00Thank you for the diagram! For this setup to be mo...Thank you for the diagram! For this setup to be more efficient it will need a better ground and shielding. What would you suggest? Perhaps an aluminum case or Faraday cage for shielding?Anonymoushttps://www.blogger.com/profile/13074798135287544049noreply@blogger.comtag:blogger.com,1999:blog-2878031054271009109.post-87441283383070418672014-11-20T11:17:35.300+08:002014-11-20T11:17:35.300+08:00You can change the amplifier to obtain a higher se...You can change the amplifier to obtain a higher sensitivity then the earth's magnetic field could be detected. But there is a problem of this apparatus, due to it's an integrating circuit, the magnitude of the change of magnetic field is store as a "voltage" inside the capacitor. Therefore, a spontaneously voltage decay of a capacitor can influence your measurements. So, get a good quality capacitor is important for the experiment. Good luck~ :DLe Luhttps://www.blogger.com/profile/02630054521054204359noreply@blogger.comtag:blogger.com,1999:blog-2878031054271009109.post-13126965026313382942014-11-20T11:00:59.504+08:002014-11-20T11:00:59.504+08:00If the frequency of your magnetic field source is ...If the frequency of your magnetic field source is strong enought and not higher than 10 Hz, you can see a sine wave on your ScopeMeter.Le Luhttps://www.blogger.com/profile/02630054521054204359noreply@blogger.comtag:blogger.com,1999:blog-2878031054271009109.post-43450732687422075252014-11-20T11:00:13.157+08:002014-11-20T11:00:13.157+08:00This comment has been removed by the author.Le Luhttps://www.blogger.com/profile/02630054521054204359noreply@blogger.comtag:blogger.com,1999:blog-2878031054271009109.post-18504680167747295362014-11-20T10:55:36.939+08:002014-11-20T10:55:36.939+08:00I use a film capacitor and a carbon film resistor....I use a film capacitor and a carbon film resistor.Le Luhttps://www.blogger.com/profile/02630054521054204359noreply@blogger.comtag:blogger.com,1999:blog-2878031054271009109.post-41712341747026694452014-11-20T10:53:08.968+08:002014-11-20T10:53:08.968+08:00A power substation emits radio wave(electromagneti...A power substation emits radio wave(electromagnetic wave) which is an alternative magnetic field and electric field. The net magnetic field is zero because + phase destruct - phase when a radio wave path through the coil of this apparatus. So this apparatus is not suitable detecting a radio wave. Le Luhttps://www.blogger.com/profile/02630054521054204359noreply@blogger.comtag:blogger.com,1999:blog-2878031054271009109.post-46756269809626463882014-11-19T04:49:15.932+08:002014-11-19T04:49:15.932+08:00can i use it to determine the earth's magnetic...can i use it to determine the earth's magnetic field ?<br />i want to know it's efficiency <br />thanks :Dyukahttps://www.blogger.com/profile/01667135894973830450noreply@blogger.comtag:blogger.com,1999:blog-2878031054271009109.post-14040546446630042862014-11-15T23:40:01.264+08:002014-11-15T23:40:01.264+08:00does this setup work for dynamic sin() like magnet...does this setup work for dynamic sin() like magnetic fieldAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-2878031054271009109.post-15216678540824607402014-11-15T23:36:59.398+08:002014-11-15T23:36:59.398+08:00Hi buddy!
what kind of resistor and capacitor do w...Hi buddy!<br />what kind of resistor and capacitor do we use for this magnetometer?<br />thanksAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-2878031054271009109.post-24753758751577233782014-02-06T14:41:17.000+08:002014-02-06T14:41:17.000+08:00Hi: THX for sharing. If Iwant to detect if I am fa...Hi: THX for sharing. If Iwant to detect if I am far enough from a power substation/power lines, how should this be modified. THX in advance.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-2878031054271009109.post-37320169563295987302013-12-02T19:39:29.552+08:002013-12-02T19:39:29.552+08:00Yes. But you need a bigger coil and you have to fi...Yes. But you need a bigger coil and you have to find out the direction of the magnetic field to adjust zero because the earth's magnetic field is always exist. So it would not be a good ideal. While the "Fluxgate magnetometers" is a good option to test the earth's magnetic field.Le Luhttps://www.blogger.com/profile/02630054521054204359noreply@blogger.comtag:blogger.com,1999:blog-2878031054271009109.post-53077539175373514002013-12-02T13:13:26.291+08:002013-12-02T13:13:26.291+08:00can we use this to measure the earth's magneti...can we use this to measure the earth's magnetic field?<br />Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-2878031054271009109.post-20283080711974797972013-11-04T03:41:54.372+08:002013-11-04T03:41:54.372+08:00I not sure about the magnetic field but I am want ...I not sure about the magnetic field but I am want to build a meter that can be used with a radius of approx 3 to 4 metres.Athttps://www.blogger.com/profile/00192482596065162235noreply@blogger.comtag:blogger.com,1999:blog-2878031054271009109.post-25422927184602908692013-11-03T10:02:47.920+08:002013-11-03T10:02:47.920+08:00How strong is your magnetic field ? But by the way...How strong is your magnetic field ? But by the way, I'm abroad now so I cannot do experiment for you.Le Luhttps://www.blogger.com/profile/02630054521054204359noreply@blogger.comtag:blogger.com,1999:blog-2878031054271009109.post-62587976396312813312013-11-03T10:01:31.465+08:002013-11-03T10:01:31.465+08:00Hi Pablo,
I used 12.0V as a power supply but I'...Hi Pablo,<br />I used 12.0V as a power supply but I'm not sure about the miliamper now(I'm abroad).Le Luhttps://www.blogger.com/profile/02630054521054204359noreply@blogger.comtag:blogger.com,1999:blog-2878031054271009109.post-42505385869638914352013-11-03T05:12:12.225+08:002013-11-03T05:12:12.225+08:00Is it possible to give us specs for a stronger mag...Is it possible to give us specs for a stronger magnetometer. ThanksAthttps://www.blogger.com/profile/00192482596065162235noreply@blogger.comtag:blogger.com,1999:blog-2878031054271009109.post-10094205903664217592013-05-17T11:09:34.483+08:002013-05-17T11:09:34.483+08:00Hi, Thanks for your effort. I have a little quest...Hi, Thanks for your effort. I have a little question: What volts and miliamper have the voltage source? Very thanks<br />PabloAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-2878031054271009109.post-73608860138211397232013-04-05T17:10:28.506+08:002013-04-05T17:10:28.506+08:00Hello Paco!
Yes, you are right. A tesla is a big u...Hello Paco!<br />Yes, you are right. A tesla is a big unit, but a strong magnet could produce about 0.8T. So I think it is suitable for detecting the magnetic field which is caused by a magnet. Le Luhttps://www.blogger.com/profile/02630054521054204359noreply@blogger.comtag:blogger.com,1999:blog-2878031054271009109.post-28301723496903425212013-04-03T10:29:50.073+08:002013-04-03T10:29:50.073+08:00A tesla is a big unit. So is hard to detect by exa...A tesla is a big unit. So is hard to detect by example the earth magnetic field. So is better use microteslapaco_espinolahttps://www.blogger.com/profile/06324823713984266704noreply@blogger.comtag:blogger.com,1999:blog-2878031054271009109.post-42933723204898986002013-04-03T09:41:52.895+08:002013-04-03T09:41:52.895+08:00The total wire length is 3.73 mts.
with a p=0.0171...The total wire length is 3.73 mts.<br />with a p=0.0171 ohm mm^2/m <br />the coil resistance give me <br /><br />R=l*p/transversal_area<br />R=1.53 ohms but you has 0.45 ohms<br /><br />Also I found 0.45 ohms in some table wire awg But I lost the place. So I am no sure if 0.45 is ok.paco_espinolahttps://www.blogger.com/profile/06324823713984266704noreply@blogger.comtag:blogger.com,1999:blog-2878031054271009109.post-43644108818068027622013-04-03T07:30:05.805+08:002013-04-03T07:30:05.805+08:000.23mm x 85 turns give me 19.55 mm long.
So maybe ...0.23mm x 85 turns give me 19.55 mm long.<br />So maybe you left some space to obtain 23.8 mmpaco_espinolahttps://www.blogger.com/profile/06324823713984266704noreply@blogger.comtag:blogger.com,1999:blog-2878031054271009109.post-49193749184659814312013-03-29T13:27:43.998+08:002013-03-29T13:27:43.998+08:00This comment has been removed by the author.paco_espinolahttps://www.blogger.com/profile/06324823713984266704noreply@blogger.com