a solid state power control controls flow of current from a power bus to an inductive load . the sspc utilizes load sharing , in which a plurality of current supply paths are connected in parallel to control and share the flow of current between the power bus and the inductive load . each current supply path includes a main power switching field effect transistor ; a balance resistor , and a secondary fet . the balance resistor is connected between the main fet and the load . the secondary fet shunts the balance resistor when the main fet is turned on , and allows current flow through the balance resistor during a turn - off time of the main fet . the balance resistor modulates gate - source voltage of the main fet in order to compensate for gate - source threshold differences among the main fets that could lead to unequal current sharing during the turn - off period .