DC Switching Regulated Power Supply for Driving an Inductive Load.
DEPARTMENT OF THE AIR FORCE WASHINGTON DC
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A power supply for driving an inductive load current from a dc power supply through a regulator circuit including a bridge arrangement of diodes and switching transistors controlled by a servo controller which regulates switching in response to the load current to maintain a selected load current. First and second opposite legs of the bridge are formed by first and second parallel-connected transistor arrays, respectively, while the third and fourth legs of the bridge are formed by appropriately connected first and second parallel connected diode arrays, respectively. The regulator may be operated in three stages or modes 1 For current runup in the load, both first and second transistor switch arrays are turned on and current is supplied to the load through both transistor arrays. 2 When load current reaches the desired level, the first switch is turned off, and load current fly wheels through the second switch array and the fourth leg diode array connecting the second switch array in series with the load.
- Electric Power Production and Distribution