PCB-based motor starter
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United States of America Patent
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Aug 27, 2019
Grant Date -
Feb 7, 2019
app pub date -
Aug 31, 2017
filing date -
Aug 4, 2017
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A PCB motor controller comprises relays mounted on a PCB and interconnected to power traces in or on the PCB to receive incoming three-phase power and to output three-phase power to a motor. Control power traces in or on the PCB connect the relays to control circuitry, also mounted on the PCB. A power supply is mounted on the PCB and connected to the control circuitry to provide power for its operation and for switching of the relays. The relays are switched in accordance with a point-on-wave (POW) switching scheme, allowing for the use or relays and the PCB, which may not otherwise be suitable for motor control applications.
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