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Magnetic Path Components |
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Frames, Yokes, Housings, Cores and Flux
washers are used to manage the magnetic field created by
the coil.
 C
or D shaped frames
- C frames reduce the power curve by approximately
10% of a D Frame
- C frame offers benefits when overmolding and
coil contains electronics, e.g. Diodes, varistors,
full wave bridge, fuse, TVS (Transit Voltage
Suppressors), etc.
- D frame, when external to coil, provide indexing
avenues. Internal to coil provide a ground post
for a din version, Conduit or lead wire
- For wide temperature fluctuation or increased water resistance, put the frame on the outside of molded coil
- Flux washers- plated washers that go between the
frame and bobbin flange to guide the magnetic field
down the ID of the coil
- Stamped Steel housing- helps with conduit applications,
improves power (controls more of the magnet field
than the D frame), and provides a container
for small volume epoxy type coils
- Machined housing- low volume choice; allows for
smaller footprint of coil by using less copper but
higher quality magnetic steel. Common choice for
Aerospace solenoids, LVDT, and sensors
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Quality
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