H - Electricity – 03 – K
Patent
H - Electricity
03
K
H03K 17/082 (2006.01)
Patent
CA 2619387
A system provides overload protection in power-switching circuitry, whereby current through a switch is controlled by adaptive circuitry. The switch, configured to deliver a current and a voltage, is connected to two current- limiting feedback circuits. The first current-limiting feedback circuit is coupled to the switch and limits the current through the switch based on current measured through the switch. The second current-limiting feedback circuit is configured to shunt current around the first current-limiting feedback circuit as a function of the voltage delivered to the load, which changes the amount of current the switch can deliver to the load.
L'invention porte sur un système de protection contre les surcharges de circuits de commutation de puissance dans lequel le courant traversant un commutateur est commandé par un circuit adaptatif. Le commutateur, qui fournit un courant et une tension, est relié à deux circuits limiteurs rétroactifs. Le premier est connecté au commutateur et limite le courant le traversant en fonction de l'intensité mesurée; le deuxième dévie le courant autour du premier circuit limiteur en fonction de la tension appliquée à la charge, ce qui modifie l'intensité du courant que le commutateur peut appliquer à la charge.
Borden Ladner Gervais Llp
Tellabs Operations Inc.
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