Industry Patents
Patent: 6831426
Electronic Device, Or Dimmer, For Regulating The Power Supply Applied To a Load
(Click image for PDF of full patent)
| Patent Number: |
6831426 |
| Title: |
Electronic Device, Or Dimmer, For Regulating The Power Supply Applied To a Load |
| Abstract: |
The invention concerns an electronic device, or dimmer, for regulating the
power supply applied to a load (4), the device comprising an insulated
gate bipolar transistor or IGBT (1), the IGBT (1) having a first operating
mode in which it is off and does not allow any current to pass, a second
operating mode in which it is on and the current passing therein is
substantially limited by characteristics of an external circuit connected
to it, and a third linear region operating mode, in which the current
passing therein is limited by a value proportional to the gate voltage,
the IGBT (1) being connected to a rectifier bridge (2), apt to be
connected to a load (4) and to a mains (5) connected in series to each
other, the device further comprising a processing and controlling unit,
the device being characterised in that said processing and controlling
unit includes digital processing means (6, 7) and in that the device
comprises ramp generating means (17, 18) driven by said processing and
controlling unit, apt to generate a ramp voltage signal at an output
terminal connected to the IGBT gate, so as to drive the IGBT (1) in linear
region.
The invention further concerns a system for controlling and regulating the
power supply applied to a plurality of loads (4), comprising one of such
dimmers for each one of the loads of said plurality.
|
| Country of Issue: |
US |
| First Named Inventor: |
Brevetti, De Sisti, Torni |
| Assignee: |
De Sisti Lighting |
| Continuation or Divisional of: |
|
| International Classification: |
G05F 1/00 |
| US Classification: |
315/291 |
| Issue Date: |
12-14-2004 |
| Filing Date: |
01-09-2003 |
| Application : |
10/338732 |
| Notes: |
|
| Link to Patent at freepatentsonline.com: |
6831426 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
6831426 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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