Apparatus for compensating wattless power component of inductive power consumers

Claim 1

APPARATUS FOR COMPENSATING THE WATTLESS POWER COMPONENT OF AN INDUCTIVE POWER CONSUMER CONNECTED TO A POWER SUPPLY LINE AND WHEREIN SAID POWER CONSUMER IS OF THE TYPE WHEREIN THE INDUCTANCE VALUE IS SUBJECT TO SUDDEN AND SUBSTANTIAL CHANGES, SAID APPARATUS COMPRISING MEANS FOR MEASURING THE DEVIATION IN PHASE AS BETWEEN THE VOLTAGE AND CURRENT IN SAID POWER SUPPLY LINE ATTRIBUTABLE TO SAID INDUCTIVE POWER CONSUMER, SAID PHASE VOLTAGE TION MEASURING MEANS ALSO PRODUCING AND OUTPUT VOLTAGE WHOSE MAGNITUDE AND POLARITY DEPEND RESPECTIVELY UPON THE EXTENT OF SAID PHASE DEVIATION AND THE SENSE THEREOF, A FIRST BANK OF FINE GRADED CONDENSERS, A SECOND BANK OF COARSE GRADED CONDENSERS, FINE AND COARSE CONDENSER SELECTOR MEANS CONTROLLED RESPECTIVELY IN ACCORDANCE WITH SAID OUTPUT VOLTAGE FOR SELECTABLY CONNECTING THE FINE AND COARSE GRADED CONDENSERS IN SAID FIRST AND SECOND CONDENSER BANKS IN PARALLEL WITH SAID INDUCTIVE POWER CONSUMER, THE INSENSITIVITY FACTOR OF SAID COARSE CONDENSER SELECTOR MEANS BEING GREATER THAN THAT OF SAID FINE CONDENSER SELECTOR MEANS, AND MEANS FOR RENDERING SAID FINE CONDENSER SELECTOR MEANS TEMPORARILY INOPERABLE FOR CHANGING THE CONNECTIONS OF THE CONDENSERS IN SAID FIRST CONDENSER BANK WHILE SAID COARSE SELECTOR MEANS IS BEING OPERATED TO CHANGE THE CONNECTIONS OF THE CONDENSERS IN SAID SECOND CONDENSER BANK.