Patent ID: 7760063

Claim:
A transformer comprising: a bobbin comprising a winding member, a first channel, and multiple ground pins, wherein said first channel runs through said winding member, and said ground pins are penetrated through said bobbin and have first terminal parts protruded from a surface of said bobbin; a primary winding coil and a secondary winding coil wound around said winding member; a case comprising a receiving portion for partially accommodating said winding member therein, a second channel communicated with said receiving portion, and multiple perforations corresponding to said ground pins, wherein said first terminal parts of said ground pins are penetrated through said perforations and protruded from a surface of said case when said winding member is accommodated in said receiving portion; and a magnetic core assembly partially embedded into said first channel of said bobbin and said second channel of said case, so that said magnetic core assembly is contacted with said first terminal parts of said ground pins, wherein said case further comprises at least one raised block, which is arranged on a base plate of said case and sustained against said magnetic core assembly so as to facilitate fixing said magnetic core assembly on said case.