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how to build dc electromagnet which produce 5mT of flux density?
which type of core should be used.it is used in electronic circuit just to wake up data logger
which type of core should be used.it is used in electronic circuit just to wake up data logger
Discussions
3 years ago
If the cylinder is not made of iron then you have the beginning of a solenoid.
If it is iron then you may have a lifting magnet or inductor.
I found this formula on the web.
Force exerted = (NI)^2 x 2Pi x 10^7 x Area/g^2
(NI)^2 = number of Turns * Current Squared.
Pi = 3.14159
Area = area of Coil
g^2 = distance to object Squared
Answer 3 years ago
You need to click the pics to see the whole image.
Answer 3 years ago
electromagnet is used to wake up logger .it uses 3.6v step input.
Answer 3 years ago
is logger a person ??
Answer 3 years ago
it is data logger.device used to read data like temperature and humidity etc.we just need to initiate the logger by giving a step input of 3.6v dc .field generated by the electromagnet will be sensed by the some electronic switch and it will turn on the data logger
3 years ago
Over what area ? To what precision ? 5mT over a soccer field is very hard. 5mT in a tube like a pencil is not. 0.01% variation is hard, 10% is not.
Answer 3 years ago
over an iron core solenoid of 2 inch height and 0.5 inch dia.