Transformer including high voltage pole and electrical connection to load

A transformer for on a circuit board, the circuit board comprising a high-voltage line and a load, the transformer comprising:

• a bobbin configured for winding a coil thereon and comprising a first secondary area, wherein the bobbin is made of an insulator, the coil comprising a high voltage end and a low voltage end;
• a first secondary high voltage pole extending from the first secondary area and made of a conductor;
• a first secondary high voltage pin fixed on an end of the first secondary high voltage pole away from the first secondary area;
• wherein the high voltage end of the coil is disposed on a top surface of the first secondary high voltage pole and electrically connected to the first secondary high voltage pin and positioned such that the first secondary high voltage pole is capable of jumping across the high-voltage line to make the first secondary high voltage pin electrically connect to the load.