Industry Patents
Patent: 5672941
Inductorless Controlled Transition Light Dimmers Optimizing Output Waveforms
(Click image for PDF of full patent)
| Patent Number: |
5672941 |
| Title: |
Inductorless Controlled Transition Light Dimmers Optimizing Output Waveforms |
| Abstract: |
Lamp dimmers are disclosed in which, in the course of varying average power
supplied to the lamp load, the semiconductor power control devices
transition between one and the other of substantially conductive and
non-conductive power conditions, the duration of the transition by the
power control devices themselves is increased beyond the minimum possible
duration to reduce generated EMI. The dimmers disclosed provide for
varying the direction, duration, shape, and phase angle of transitions.
|
| Country of Issue: |
US |
| First Named Inventor: |
Callahan, Chester, Goddard |
| Assignee: |
|
| Continuation or Divisional of: |
5455490 |
| International Classification: |
G05F 1/00 |
| US Classification: |
315/194 |
| Issue Date: |
09-30-1997 |
| Filing Date: |
06-07-1995 |
| Application : |
473637 |
| Notes: |
|
| Link to Patent at freepatentsonline.com: |
5672941 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
5672941 at Google Patents |
1. The Google Patents and World Patent Family links will likely not work until a few weeks
after the patent has issued - they take a while to get new patents in their systems.
Disclaimer: This web site is not intended to offer comprehensive or sufficient
information to enable a full legal analysis of a patent or potential
infringement. The information provided on this web site is intended
as general information only, and is not intended to serve as legal
opinion, legal advice or as a substitute for legal counsel. If you
have a question about a specific factual situation, you should
contact an attorney directly
|
