H - Electricity – 05 – B
Patent
H - Electricity
05
B
328/166, 315/44
H05B 41/38 (2006.01) H03K 17/292 (2006.01) H05B 41/392 (2006.01)
Patent
CA 1114887
ADJUSTABLE DC PULSE CIRCUIT FOR VARIATION OVER A PREDETERMINED RANGE USING TWO TIMER NETWORKS ABSTRACT OF THE DISCLOSURE A circuit for providing a dc pulse, such as to a gated semiconductor for at least partial bypass of a ballast element connected to an HID lamp, the pulse being developed within a time range of an associated ac voltage. A first timer operably connected to the ac voltage produces a first dc output pulse and a second timer connected to the output of the first timer produces the circuit dc pulse output. Reduction of a threshold control voltage of the first timer permits a time constant network connected thereto to advance the conclusion of the output of the first timer forward within its operational range. A time constant network connected to the second timer has charge current added to it from the first timer control voltage, the amount of such current decreasing with an advance positioning of the output of the first timer, thereby increasing the slope of the charge-up voltage of the second time constant network and shortening of the related square wave or dc pulse output from the second timer.
331872
Esquire Inc.
Meredith & Finlayson
LandOfFree
Adjustable dc pulse circuit for variation over a... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Adjustable dc pulse circuit for variation over a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adjustable dc pulse circuit for variation over a... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1014524