SWITCH CIRCUIT FOR CONTROLLING SUPPLY OF ELECTRICAL ENERGY TO A LOAD

摘要

A switch circuit comprises an unidirectional power source module, an unidirectional load module, an inductor and a switch module. By controlling a switching operation of the switch module, the inductor is enabled to store or discharge the electrical energy so as to modulate the operating current. When the inductor supplies the electrical energy to the unidirectional load module, the inductor and the unidirectional load module consist of a loop. When the input voltage is at a higher potential, the switch circuit may control the operating current by the inductor's properties so as to modulate the operating power of the unidirectional load module, and when the input voltage is at a lower potential, the switch circuit still may store or discharge the electrical energy by switching the inductor so as to provide the operating current to the unidirectional load module.

主权项

1. A switch circuit for controlling supply of electrical energy to a load, comprising:
an unidirectional power source module having a first node and a second node; an unidirectional load module having a first node and a second node; an inductor, one terminal of the inductor being connected to the first node of the unidirectional power source module and the second node of the unidirectional load module, the other terminal of the inductor being connected to the first node of the unidirectional load module; and a switch module comprising a first switch, a first terminal of the first switch being connected to the first node of the unidirectional load module, a control terminal of the first switch being configured to receive a first control signal, and a second terminal of the first switch being connected to the second node of the unidirectional power source module, wherein the first switch is turned ON or OFF according to the first control signal.