Patent ID: 7053570
Filing Date: 2006-05-30
Classification: H01H,H02P

Abstract:
1. A control circuit for operating a dual directional direct current motor from an alternating current power source, said motor being operatively associated with a first position indication and a second position indication, said control circuit comprising: a first circuit structured to receive an alternating current voltage from said alternating current power source, said first circuit including a first output, a first direction input and said first position indication, said first output having a first alternating current voltage responsive to said first direction input and said first position indication; a second circuit structured to receive the alternating current voltage from said alternating current power source, said second circuit including a second output, a second direction input and said second position indication, said second output having a second alternating current voltage responsive to said second direction input and said second position indication; a first rectifier receiving the first output of said first circuit and a ground or neutral of said alternating current power source, said first rectifier providing an output having a direct current voltage with a first polarity responsive to the first alternating current voltage of the first output of said first circuit; a second rectifier receiving the second output of said second circuit and the common or the neutral of said alternating current power source, said second rectifier providing an output having a direct current voltage with a second polarity responsive to the second alternating current voltage of the second output of said second circuit; and a third circuit having an input energized by the second alternating current voltage of the second output of said second circuit, said third circuit having a first output when the input thereof is not energized and having a second output when the input thereof is energized, the first output of said third circuit enabling said first rectifier to apply the direct current voltage with the first polarity of the output of said first rectifier to said motor, the second output of said third circuit enabling said second rectifier to apply the direct current voltage with the second polarity of the output of said second rectifier to said motor, the first output of said third circuit and said first rectifier providing a braking action to said motor responsive to removal of the second alternating current voltage of said second circuit.