Fixed frequency, variable duty cycle, square wave dimmer for...

Details Fixed frequency, variable duty cycle, square wave dimmer for... Fixed frequency, variable duty cycle, square wave dimmer for...

H - Electricity

05

B

315/44

H05B 41/38 (2006.01) H05B 41/288 (2006.01) H05B 41/392 (2006.01)

Patent

CA 1087242

FIXED FREQUENCY, VARIABLE DUTY CYCLE, SQUARE WAVE DIMMER FOR HIGH INTENSITY GASEOUS DISCHARGE LAMP ABSTRACT OF THE DISCLOSURE A dimmer circuit for an HID lamp is provided for supplying a square wave current therethrough at a constant frequency, but whose duty cycle is variable dependent on a sensed current level. The circuit employs a first pair of transistor switches for reversing polarity through the lamp at a low frequency rate. Associated with each of those transistors is a circuit having a transistor switch connected to a drive circuit employing a timer network. The timer network produces an output that is a square wave, the leading edge of which occurs at regular intervals at a high frequency rate. The trailing edge occurs dependent on a dim/bright voltage setting and upon the amount of current through a sensing resistor in series with the lamp.

331115

Affiliated with

Also associated with

Rating

Fixed frequency, variable duty cycle, square wave dimmer for... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fixed frequency, variable duty cycle, square wave dimmer for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fixed frequency, variable duty cycle, square wave dimmer for... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-30408