Slow acting photo lamp control

Electric lamp and discharge devices: systems – With radiant energy sensitive control means – Radiant energy controlled regulation of the current supply...

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

315151, 315156, 315DIG4, 315DIG7, H05B 3702

Patent

active

046971220

ABSTRACT:
A room lighting control system which controls the electrical power supplied to the artificial lighting in an area based on the ambient light available. A photocell controlled digital lamp dimming circuit with particularly high stability for time and temperature is combined with a slow response time to avoid short term adjustments. A digital counter is used to determine a large number of steps over the adjustment range and the driving clock operates at a very low frequency, so that changes in light level take a relatively long time, and it takes an exceptionally long time to span the entire adjustment range.

REFERENCES:
patent: 4097782 (1978-06-01), Chambliss
patent: 4135116 (1979-01-01), Smith
patent: 4273999 (1981-06-01), Pierpoint

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Slow acting photo lamp control does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Slow acting photo lamp control, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Slow acting photo lamp control will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1591012

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.