Invention Grant
- Patent Title: Low current electric motor starter
- Patent Title (中): 低电流电动机起动器
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Application No.: US12611198Application Date: 2009-11-03
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Publication No.: US08258738B2Publication Date: 2012-09-04
- Inventor: Robert J. Andrews, Jr. , Russell P. Brodeur , Kevin J. Dropps
- Applicant: Robert J. Andrews, Jr. , Russell P. Brodeur , Kevin J. Dropps
- Applicant Address: US MA Attleboro
- Assignee: Sensata Technologies Massachusetts, Inc.
- Current Assignee: Sensata Technologies Massachusetts, Inc.
- Current Assignee Address: US MA Attleboro
- Agency: Chapin IP Law, LLC
- Main IPC: H02P1/44
- IPC: H02P1/44

Abstract:
A low cost motor starter is shown having a PTC resistor 12 serially connected to a triac 14 and a bias resistor in turn adapted to be connected to the start winding of a single phase motor. A reed relay 16 having a sense coil 16a serially connected to the main winding in one preferred embodiment and in parallel with the main and start windings in a second preferred embodiment, is magnetically coupled to reed contacts 16b, 16c. Reed contact 16b is connected to a location intermediate the PTC resistor 12 and the triac 14 while reed contact 16c is connected to the gate of the triac. A gate signal phase shifting network comprising capacitor C1-R2 is also connected to reed contact 16c and the gate.
Public/Granted literature
- US20100134063A1 LOW CURRENT ELECTRIC MOTOR STARTER Public/Granted day:2010-06-03
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