Apparatus and method of interrupting current for reductions in arcing of the switch contacts
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 3, 1999
Grant Date -
N/A
app pub date -
Apr 28, 1998
filing date -
Apr 28, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A current interrupter circuit includes a primary current path and a secondary current path in parallel with one another and provided between input and output terminals. At least one solid state switch, preferably a power MOSFET, are interposed along the secondary current path. At least one electromagnetic relay has relay contacts for engaging and disengaging the primary path from a power source and from the secondary path. A sequencing circuit provides a first control signal to turn on or maintain on the solid state switches prior to sending a second control signal to open/close the relay contacts, and further provides a third control signal to turn off the solid state switches shortly after the relay contacts are opened, whereby arcing of the contacts is prevented.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully