Important to inductors, transformers, generators, motors, magnetic fields, inductive heating, magnetic storage, permanent magnets

learn more… | top users | synonyms

1
vote
0answers
34 views

Why compass module is affected by its x,y position, if my phone's compass work in the same environment?

I am using hmc5883L on an autonomus robot. It shall remain in a 1 meter squared area. I have recently discovered that its reading changes up to 20 degrees on different positions even when it is facing ...
1
vote
0answers
22 views

Closed loop shapes with zero mutual inductance?

I have done numerous searches trying to find any mention of theory or experimentation done on determining closed current loop shapes that have zero mutual inductance and...no dice! Of course you can ...
1
vote
0answers
53 views

Is there a way to shield the fluidics of a solenoid valve from its magnetic field?

Are there any solenoid valves on the market that specifically shield the fluidics from the magnetic field of the solenoid actuation? Either by physically redirecting the fluidics around the coils or ...
1
vote
0answers
280 views

Building an electromagnet to work over an air gap

I am currently working on a project where I am building an electromagnet that works over an air gap. Specifically a gap of about 0.3 inches. The electromagnet type was selected because I need to be ...
1
vote
0answers
119 views

Ground plane and magnets

I am making a wheel encoder out of a Hall Effect sensor with magnets in a concentric circle on the wheel. The Hall effect sensor is on a 2-layer 9x5mm pcb. I usually fill in the layers by drawing a ...
1
vote
0answers
3k views

What sensors are commonly used for vehicle detection?

I want to make a vehicle detection prototype. I find there are multiple choices of sensors that can be used to detect a vehicle, such as acoustic, ultrasonic, infrared, magnetic inductive sensor. I ...
0
votes
0answers
9 views

3-phase, 2-circuit transmission line calculations

I am trying to assess different positions for 6 conductors of a 3-phase, 2-circuit transmission line. The aim is to minimise the intensity of the magnetic field (H) at the edge of the ROW, 1m above ...
0
votes
0answers
43 views

Putting together a flyback converter development platform

At this stage of my independent study of off-line flyback topology switching converters, I'd like to start building some working converters to get a hands-on feel for things and to perform ...
0
votes
0answers
83 views

Overcoming rotor magnetic field when magnetizing stator in a Halbach motor

I am currently building a high static torque motor using electropermanent magnets arranged in a circular Halbach array as so: I've coiled magnet wire around the 12 alnico magnets making up the ...
0
votes
0answers
118 views

Ferrite core characterization

I need to make a dc dc converter and have some ferrite toroids but I don't have the datasheet of the cores so I need to know how much energy are capable do store the core and what current can they ...