Patent ID: 9712099
Date: 2017-07-18
CPC Classifications: H02P

Claim:
1. A circuit comprising: at least two phase windings forming one half of motor phase windings of the circuit and at least two other phase windings forming another half of the motor phase windings of the circuit; a direct current (DC) power supply at least approximately at a midpoint of the motor phase windings to receive alternating current (AC) power transferred from one or more of the phase windings and convert the AC power to DC power; a first stage power switch circuit comprising at least one power switch outside of the DC power supply and electrically connected at least approximately at a midpoint between phase windings on each half of the circuit; a second stage power switch circuit comprising at least one other power switch outside of the DC power supply and electrically connected at least approximately at the midpoint of the divided phase windings to receive AC power from the motor divided phase windings; and a non-collapsing DC power supply component to prevent the DC power supply from collapsing when the at least one power switch is on and conducting.