MAGNETICS

Dyco Electronics manufactures a wide range of military and commercial
magnetics. We make transformers, reactors, inductors, chokes,
coils...just about anything that involves copper foil or copper magnet
wire. We also do simple electrical and mechanical assemblies and have
extensive molding and potting capabilities.

We invite you to send us your mature magnetics requirements for bid or
challenge us with your problem parts or assemblies. Either way we are
committed to bringing increased value to you the customer because we do
believe that in your success lies our success!

Impedance, (Z) is a measure for the manner and degree a component
resists the flow of electrical current if a given voltage is applied.
It is denoted by the symbol Z and is measured in ohms. Impedance
differs from simple resistance in that it takes into possible phase
offset. For a magnetics component impedance is comprised of the copper
loses due to the resistance of the magnet wire and the inductive
reactance losses associated with the changing magnetics and electric
field losses. The summation of these resistive and reactive loss
components are performed with vector addition.

The permeability of a magnetic material about a specified operating
point and applied magnetics field strength, especially under DC bias
conditions. The incremental permeability is expressed as the slope of
the B-H characteristic about the given operating point (dB/dH).

A magnetics material derived from iron oxides. The material is
pulverized into extremely small particle size, then sintered to
insulate the individual particles prior to being mixed with binders and
pressed into magnetic shapes such as bobbins, toroids, axial leaded
coil forms, E-cores, etc. By adjusting the iron oxide mix different
grades of materials are achieved aimed at providing a magnetic material
useable for specific applications.

An Air Core Coil is an inductive component that is not wound on a
magnetics core. An air coil consists only of magnet wire wound in a
self supporting configuration, the term is also frequently used to
describe coils wound on any non- magnetics coil form such as a phenolic
or paper tube. The winding may be a single or multiple layer.

An Air Gap, (lg) is the distance of non-magnetic length introduced into
a magnetics circuit. The gap can be air or it can also be non-magnetic spacers. The gap is used to introduce a magnetics
resistance to flux lines reducing the saturation effect of high levels
of current imposed onto the magnetic coil. In the diagram below the
air gap is denoted by the letter “g”. An effect known as fringing can
reduce the magnetics size of the air gap.

Dyco is an asset to any company looking to out source or reduce the number of
suppliers in the magnetics commodity because of our extremely broad range
of capabilities and experience. Some of which are:

Toroids
All core materials, ferrite, MPP, iron powder, and tape wound.
1/8” ID with 45 gauge wire to 10” ID with multiple strands of 10 gauge.
Bank and modified bank windings.
Ringing requirements.
Corona requirements.
High dielectric breakdown requirements that mandate multiple layers/types of winding to winding insulation.
Bobbin windings.
Planar Transformers.
Core tube or multiple windings.
Air coil windings.
54 gauge copper magnet wire to 10” wide x .032 thick copper and aluminum sheet windings.
Stacking with c-cores, miniature up to 80 lb. cores, silicon steel and nickel.
Laminations, 094F, 6 mil nickel to 3ø EI 360, .025 mil silicon steel.
Termination of windings.
Leads
Bus bars
Pc mount bobbins.
Surface mount bobbins.
Custom pc & surface mount potted packages.
Terminals, faston and hermetically sealed ceramic and Teflon for mil spec enclosures.
Microscope soldering of fine wire windings to custom pc boards.
Potting and impregnations
Molded
Custom cased, potted.
Mil spec enclosure.
Vacuum and positive pressure pours and cures.
Varnishes, epoxies, silicones, and urethanes.
Testing
Corona testing capabilities up to 13,000 Vrms.
Two high speed computerized test systems, Optimized Devices Model MM-1
DWV testing up to 25 KVrms.