Patent ID: 7411317

Claim:
An electrical load status detection and control device for detecting a current passing from a power supply with a first power supply terminal and a second power supply terminal to an electrical load, comprising: a first power supply circuit loop provided with a first node connected to the first power supply terminal, a second node, a first power output terminal connected to the second node; a first switch connected between the first node and the second node of the first power supply circuit loop; a second power supply circuit loop provided with a third node connected to the second power supply terminal, a fourth node, a second power output terminal connected to the fourth node; a no-load status detection unit connected with the third node and the second power supply terminal for detecting the current passing through the second power supply circuit loop and thereby generating a current detection signal; a reference current value database provided with a reference current value range; and a micro-controller connected with the reference current value database, the no-load status detection unit, and the first switch, which receives the current detection signal from the no-load status detection unit; wherein the micro-controller generates a switching signal to actuate the first switch to thereby open the first power supply circuit loop when detecting the current passing through the second power supply circuit loop out of the reference current value range of the reference current value database.