Industry Patents
Patent: 5237244
Electric Lighting and Power Controllers Therefor
(Click image for PDF of full patent)
| Patent Number: |
5237244 |
| Title: |
Electric Lighting and Power Controllers Therefor |
| Abstract: |
In a lighting power controller having a controllable switch (such as a
thyristor), in order to compensate for perturbations in the mains supply
waveform, the waveform is analysed and a table is set up of thyristor
firing angle against output RMS voltage. To obtain a desired output RMS
voltage, the thyristor is fired at the angle indicated by the table.
|
| Country of Issue: |
US |
| First Named Inventor: |
Bertenshaw, Williamson, Wright |
| Assignee: |
Strand Lighting |
| Continuation or Divisional of: |
5066896 |
| International Classification: |
H05B 37/02 |
| US Classification: |
315/291 |
| Issue Date: |
08-17-1993 |
| Filing Date: |
07-15-1991 |
| Application : |
745610 |
| Notes: |
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| Link to Patent at freepatentsonline.com: |
5237244 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
5237244 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.
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