Inventor
KARRAKER DOUGLAS
US3 patents
Patents
3 patentsUS7948721B2May 24, 2011
AC motor bypass with fault annunciation, serial communication and fault tolerant coil control
ABB INC15 citations78
US7154277B2Dec 26, 2006
Method and apparatus for detecting faults in AC to AC, or DC to AC power conversion equipments when the equipment is in a high impedance mode
ABB INC17 citations75
US9419529B2Aug 16, 2016
DC bus voltage measurement circuit
ABB INC0 citations39