Title:
LOAD CONTROL DEVICE FOR HIGH-EFFICIENCY LOADS
Document Type and Number:
WIPO Patent Application WO/2017/041011
Kind Code:
A3
Abstract:
A load control device for controlling power delivered from an AC power source to an electrical load may comprise a thyristor, a gate current path, and a control circuit. The control circuit may be configured to control the gate current path to conduct a pulse of gate current through a gate terminal of the thyristor to render the thyristor conductive at a firing time during a half-cycle of the AC power source. The control circuit may operate in a first gate drive mode in which the control circuit renders the gate current path non-conductive after a pulse time period from the firing time. The control circuit may operate in a second gate drive mode in which the control circuit maintains the gate current path conductive after the pulse time period during the half-cycle.
Inventors:
MACADAM RUSSELL L (US)
PARENT JOSEPH T (US)
WEIGHTMAN RUSSELL (US)
PARENT JOSEPH T (US)
WEIGHTMAN RUSSELL (US)
Application Number:
PCT/US2016/050227
Publication Date:
June 29, 2017
Filing Date:
September 02, 2016
Export Citation:
Assignee:
LUTRON ELECTRONICS CO (US)
International Classes:
H05B39/04; H02M5/293; H02M7/06; H02M7/155; H05B44/00; H05B45/50; H05B45/59
Foreign References:
| US20140126261A1 | 2014-05-08 | |||
| EP2443910B1 | 2013-10-09 | |||
| US20140077718A1 | 2014-03-20 | |||
| US20140239842A1 | 2014-08-28 |
Attorney, Agent or Firm:
CONDO, Joseph R. et al. (US)
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