Choke

A choke, comprising:

• a magnetic core comprising:
• a winding portion having a first end and a second end;
• a first magnetic portion connected with the first end of the winding portion for forming two first angles disposed opposite to each other with the winding portion, wherein the first magnetic portion includes a first side surface disposed opposite to the first end and a first trench and a second trench formed on the first side surface;
• and
• a second magnetic portion connected with the second end of the magnetic portion for forming two second angles disposed opposite to each other with the winding portion, wherein a winding space is defined by the first magnetic portion, the winding portion and the second magnetic portion, and the two second angles are disposed opposite to the two first angles in the winding space, and wherein the second magnetic portion includes a second side surface disposed opposite to the second end and a third trench and a fourth trench formed on the second side surface;
• and
• an insulated wire formed as a first electrode in the third trench, formed as a second electrode in the first trench, wound on the winding portion from the first angle in the winding space to form a plurality of coil turns, formed as a third electrode in the fourth trench, and formed as a fourth electrode in the second trench,
• wherein the coil turns contacted with the winding portion are disposed at a first degree to the coil turns contacted with the first magnetic portion, and the coil turns contacted with the winding portion are disposed at a second degree to the coil turns contacted with the second magnetic portion, and wherein the degree of the first angle is greater than 90 degrees, and the degree of the second angle is greater than 90 degrees.

A choke, comprising:

• a magnetic core comprising:
• a winding portion having a first end and a second end;
• a first magnetic portion connected with the first end of the winding portion for forming two first angles disposed opposite to each other with the winding portion, wherein the first magnetic portion includes a first side surface disposed opposite to the first end and a first trench and a second trench formed on the first side surface;
• and
• a second magnetic portion connected with the second end of the magnetic portion for forming two second angles disposed opposite to each other with the winding portion, wherein a winding space is defined by the first magnetic portion, the winding portion and the second magnetic portion, and the two second angles are disposed opposite to the two first angles in the winding space, and wherein the second magnetic portion includes a second side surface disposed opposite to the second end and a third trench and a fourth trench formed on the second side surface;
• and
• an insulated wire formed as a first electrode in the first trench, wound on the winding portion from the first angle in the winding space to form a plurality of coil turns, formed as a second electrode in the fourth trench, and formed as a third electrode in the second trench, wherein the first electrode is connected with a fourth electrode formed in the third trench by the insulated wire or another wire.