A field coil is an electromagnet used to generate a magnetic field
in an electro-magnetic machine, typically a rotating electrical
machine such as a motor or generator. It consists of a coil of wire
through which a current flows.
In a rotating machine, the field coils are wound on an iron
magnetic core which guides the magnetic field lines. The magnetic
core is in two parts; a stator which is stationary, and a rotor,
which rotates within it. The magnetic field lines pass in a
continuous loop ormagnetic circuit from the stator through the
rotor and back through the stator again. The field coils may be on
the stator or on the rotor.
The magnetic path is characterized by poles, locations at equal
angles around the rotor at which the magnetic field lines pass from
stator to rotor or vice versa. The stator (and rotor) are
classified by the number of poles they have. Most arrangements use
one field coil per pole. Some older or simpler arrangements use a
single field coil with a pole at each end.
Although field coils are most commonly found in rotating machines,
they are also used, although not always with the same terminology,
in many other electromagnetic machines. These include simple
electromagnets through to complex lab instruments such as mass
spectrometers and NMR machines. Field coils were once widely used
in loudspeakers before the general availability of lightweight
1.Q: Can I order sample?
A: Yes, we accept sample order.
2. Q: What's the delivery time?
A: Color is customized.
4. Q: Can I use my logo on the product?
A: Yes, we can meet your logo requirement.
Changzhou Yufeng Vehicle Co., Ltd is a is established in 1995. It
is a rapid growing enterprise who integrate the production and
marketing of eletric vehicles. After more than ten years' effort
and development, Yufeng now have become one of the leading electric
vehicles' manufacturers and supplies in China. We always keep good
relationship with many other related industries.
Our factory focuses on developing different kinds of electric
vehicles such as passenger electric vehicles, cargo electric
vehicles, electric cars, spare parts and so on. In addition, we can
do some adjusting of the electric vehicles according to customers'
requirements. The electric vehicles we are producing are almost
covering most of the electric vehicles which can be manufatured in
China. We are very professional and have full experience in
producing different kinds of elecrtric vehicle. This year, we now
develop a new model YF-lubao. This model YF-lubao becomes more and
more simple and emphasizes on the combination of usability and
aesthetic nature. Based on fashion, leisure and function, YF-lubao
converges personality and humanistic concern. Yufeng Vehicle
Co.,Ltd covers more than 580000 square meters area with nore than
50 technologists. We mainly produce ellectro-leisure vehicle for
senior citizens, tricycle for sightseeing, small size
electro-tricycle, cargo electro-tricycle, transfermer, motor,
high-intensity synthesized car body, metal car body, glass fiber
reinforced plastic car body and plastic parts of whole car
depending on excellent equipment, advanced technique, strict
quality management and a complete set of checkout methods.
Yufeng Vehicle Co.,Ltd has a special team for foreigh trade. We can
make some change according to customers' requiremnt. We have good
relation with other famous electric vehicles' company. We provide
full set of service, including data and sample, which are available
Our aim is innovation and service for customer, competitive price
with high quality.
Yufeng brand electro-tricycle have been elected as name brand of
China and excellent enterprise in China winning many national
Depending on top-grade products and excellent service, we welcome
dealers, wholesalers of fittings and people in industry of
electro-tricycle for visits and negotiation to win successful
future of electro-tricycle future!