Transformer capable of maintaining height

A transformer capable of maintaining its height formed on a circuit board having a receiving hole, comprising:

• a winding module comprising:
• a winding pillar where a winding structure is formed thereon, wherein the winding pillar is received in the receiving hole of the circuit board;
• and
• a winding baseboard connected to one end of the winding pillar and parallel to the circuit board;
• two magnetic core modules contacting and holding the winding module;
• a plurality of pins formed on an edge of the winding baseboard, wherein each of the pins comprises a first bent part separating the corresponding pin into a first portion connected to the winding baseboard and a second portion connected to the circuit board around the receiving hole;
• and
• at least one supporting means formed between two ends of at least one of the pins to contact the first portion and the circuit board to maintain the distance between the first portion and the circuit board.