Magnetomotive force converter
Convert the magnetic push of a coil between ampere-turns and gilberts.
That's 1.67× as strong as a small relay coil, while a solenoid valve is 5× stronger. That is 1 A flowing through 100 turns of wire, or 10 A through a tenth as many.
What it means
How strong is that coil?
Reference values are rough, typical figures. Real coils vary widely with their design.
Every unit
Your magnetomotive force in every unit
Learn
Three things worth knowing
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Turns and amps trade freely
1 A through 100 turns is 100 ampere-turns, and so is 10 A through 10 turns. That is how a coil designer balances wire thickness against current.
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Named after William Gilbert
The gilbert honours the author of De Magnete (1600), the first serious book on magnetism. One gilbert is 0.7958 ampere-turns.
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Not the same as field strength
Field strength H is magnetomotive force per meter of magnetic path. The same ampere-turns give a weaker field in a longer circuit.
Shortcuts
Popular magnetomotive force conversions
Background
About magnetomotive force
Magnetomotive force is what drives magnetic flux round a circuit, the way voltage drives current. For a coil it is simply current × number of turns.
Its SI unit is the ampere, usually written ampere-turn to keep the turns in mind. The gilbert is the older CGS unit.