Self-contained, self-snubbed, hid dimming module that...

Details Self-contained, self-snubbed, hid dimming module that... Self-contained, self-snubbed, hid dimming module that...

H - Electricity

02

H

H02H 7/20 (2006.01) H05B 41/39 (2006.01)

Patent

CA 2518021

A protection circuit for an HID dimming circuit is provided. A resistive component limits the initial current after a relay closes and current flows from a charged capacitor to a second capacitor. An inductive component limits the rate of change of current through the circuit. A voltage limited device limits voltage across the contacts of a solid state relay. The circuit is preferably formed in a small module that is adapted to be plugged into an HID lighting device.

La présente invention concerne un circuit de protection pour un circuit d'atténuation de décharges à haute intensité (HID). Une résistance limite le courant initial après la fermeture d'un relai et la circulation du courant à partir d'un condensateur chargé vers un second condensateur. Un élément inducteur limite ll'intensité du courant qui parcourt le circuit. Un dispositif de limite de tension restreint la tension à travers les contacts d'un relais à semi-conducteurs. Le circuit est, de préférence, formé dans un petit module qui est adapté pour être branché à un dispositif d'éclairage par décharges à haute intensité (HID).

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