The difference is between how the windings relate to magnetic material around which they are wound. If this magnetic material surrounds the windings then the device is said to be a shell type transformer. If the windings cover the exterior of the magnetic material then the transformer is said to be of the core type. Please see the link.
A 'core type' transformer core is one in which the primary windings and secondary windings are placed around each of the limbs, as opposed to a 'shell type' core, in which the two windings are placed across the centre core. A core-type core is a magnetic circuit equivalent to an electric series circuit, whereas a shell-type core is equivalent to an electric parallel circuit. This is better answered with a diagram, so I suggest that you do a search on the internet.
shell type core can be used
Core transformer and shell transformer - it has a one window. - it has a two windows. - less mechanical protection - better mechanical protection to the coils. to the coils. -windings encircles the core. - core encircles the winding. - cylindrical windings are used. - sandwich type windings are used. - it is easy to repair. - it is not easy to repair.
Actually it depends on the air gap between the core and the windings of the transformer. This is the reason why stepped core is used in medium and large transformers as it decreases the air gap between the windings and the core of the transformer.
i think Transformer operates AC and ferrite core operates in DC
Transformers can have a shell type or core type core. If the core surrounds the windings, it is probably a shell type. If it does not, it is a core type. If you update this answer with an email address, or leave a message on my message board I can send you some drawings that explain this better than words can.
A 'core type' transformer core is one in which the primary windings and secondary windings are placed around each of the limbs, as opposed to a 'shell type' core, in which the two windings are placed across the centre core. A core-type core is a magnetic circuit equivalent to an electric series circuit, whereas a shell-type core is equivalent to an electric parallel circuit.
Closed-core and shell-core transformer (1885) The development of the electrical industry was hindered by the fact that the dynamo could only supply electricity trouble-free to short distances; to longer distances a large portion of electric energy got "lost" through overheated cables. The electrical engineers of that period were well aware that cheap electrical transmission could only be achieved by increasing the voltage. However, the experiments with DC (direct current) constantly ended in failure. Between 1884 and 1885 three engineers at the Ganz factory, Ottó Titusz Bláthy, Miksa Déri and Károly Zipernowsky developed a new current distribution system based on the use of the induction apparatus called transformer. Their joint patent described a transformer with no poles and comprised two versions of it, the "closed-core transformer" and the "shell-core transformer." In the closed-core transformer the iron core is a closed ring around which the two coils are arranged uniformly. In the shell type transformer, the copper induction cables are passed through the core. The core consists of iron cables or plates. Based on this invention, it became possible to provide economical and cheap lighting for industry and households.
Transformers can have a shell type or core type core. If the core surrounds the windings, it is probably a shell type. If it does not, it is a core type. If you update this answer with an email address, or leave a message on my message board I can send you some drawings that explain this better than words can.
The core design has nothing to do with whether a transformer is used to step down, or step up, a voltage. Most transformers have core-type cores. Very large capacity (MV.A) transformers sometimes have shell-type cores, because they can be manufactured with less height. WebRep currentVote noRating noWeight
500w iron core transformer .that kind of size