Title:
RELAY WITH INTEGRAL PHASE CONTROLLED SWITCHING
Document Type and Number:
WIPO Patent Application WO/2015/089126
Kind Code:
A3
Abstract:
A relay circuit (100) includes a power supply (14) to apply an AC input line voltage to the relay circuit, a relay coil (22) and at least one pair of contacts (24) actuated by the relay coil. A zero cross detection circuit (12) and a control logic circuit (16) for the relay circuit are also disclosed. The control logic circuit determines a zero crossover point in response to an output signal from the zero crossover detection circuit, and controls a relay coil to actuate the relay contacts to switch a load at the zero crossover point of a load current when the load is connected to the at least one pair of relay contacts, such that the voltage and current across the relay contacts is zero.
Inventors:
AHMED MOHAMMAD S (US)
KOHLER RAYMOND HOWARD (US)
BHATT GANESH (US)
KOHLER RAYMOND HOWARD (US)
BHATT GANESH (US)
Application Number:
PCT/US2014/069437
Publication Date:
October 01, 2015
Filing Date:
December 10, 2014
Export Citation:
Assignee:
TYCO ELECTRONICS CORP (US)
International Classes:
H01H9/54; H02H3/08; H02H9/00; H03K17/18; H02H3/02
Domestic Patent References:
| WO1990010942A1 | 1990-09-20 |
Foreign References:
| US20030071522A1 | 2003-04-17 | |||
| DE4412640A1 | 1995-10-19 | |||
| CN103389407A | 2013-11-13 |
Attorney, Agent or Firm:
STROUD, Adam L. et al. (4550 New Linden Hill RoadSuite 14, Wilmington Delaware, US)
Download PDF: