Patent ID: 8242363

Claim:
A power supply comprising: a main body comprising a base and a cover, the base defining a cavity and a through hole communicating the cavity with the exterior, the cover covering the cavity; a circuit board received in the base; a connector comprising a connector body, a conductive pad, and a conductive fastener, the connector body disposed within the cavity, the conductive pad fixed to the connector body, connected to the circuit board and defining a threaded hole, and the conductive fastener received in the threaded hole; a cable passing through the through hole and connected to the conductive fastener; and a cable fixing element comprising: a hollow barrel comprising a first end, the first end defining at least one slot in a sidewall of the hollow barrel along an axial direction of the hollow barrel, the hollow barrel passing through the through hole with the first end exposed to the exterior, the cable passing through the hollow barrel; and a compressing threaded retainer comprising a large end and a small end, the inner diameter of the compressing threaded retainer at the large end substantially equal to the outer diameter of the hollow barrel and tapering towards the small end; the large end of the compressing threaded retainer receiving and compressing the first end of the hollow barrel such that the first end deforms and the inner diameter of the first end gradually decreases due to the compression of the compressing threaded retainer to fix the cable therein.