Load control device having a gate current sensing circuit

Details Load control device having a gate current sensing circuit Load control device having a gate current sensing circuit

H - Electricity

05

B

H05B 39/04 (2006.01)

Patent

CA 2695744

A gate drive circuit for a controllably conductive device, such as a triac, includes a trigger circuit for conducting a gate current through a control input of the controllably conductive device, and a sense circuit operable to generate a control signal representative of the magnitude of the gate current. The controllably conductive device is adapted to be coupled in series between an AC power source and an electrical load for controlling the amount of power delivered to the electrical load. The controllably conductive device is operable to change from a non-conductive state to a conductive state in response to the gate current being conducted through the control input. A controller is operable to control the controllably conductive device via the gate drive circuit and to determine, in response to the magnitude of the gate current through the control input of the controllably conductive device, whether the controllably conductive device is presently conducting current to the load.

Un circuit de commande de grille destiné à un dispositif à conductivité contrôlée, tel un triac, comprend un circuit à déclenchement permettant de conduire un courant de grille à travers une entrée de commande du dispositif à conductivité contrôlée, ainsi qu'un circuit de détection capable de générer un signal de commande représentatif de l'intensité du courant de grille. Le dispositif à conductivité contrôlée est adapté pour être couplé en série entre une source de courant en CA et une charge électrique permettant de commander la quantité de courant délivrée à la charge électrique. Le dispositif à conductivité contrôlée est capable de passer d'un état non conducteur à un état conducteur en réponse au courant de grille conduit à travers l'entrée de commande. Un contrôleur a pour fonction de commander le dispositif à conductivité contrôlée via le circuit de commande de grille et de déterminer, en réponse à l'intensité du courant de grille à travers l'entrée de commande du dispositif à conductivité contrôlée, si le dispositif à conductivité contrôlée conduit actuellement du courant vers la charge.

Affiliated with

Also associated with

Rating

Load control device having a gate current sensing circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Load control device having a gate current sensing circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Load control device having a gate current sensing circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1454470