REVERSING INDUCTIVE-LOAD SELECTOR SWITCH Russian patent published in 1999 - IPC

FIELD: magnetic control systems of space vehicles. SUBSTANCE: switch has bridge circuit of four different- conductance power transistors, inductive load, two diodes, two discharge transistors, two control transistors, two additional and two switching transistors, group of AND gates, and several resistors; newly introduced four additional resistors make it possible to generate blocking signals by output current of discharge transistors which are directly controlled by inductive- load discharge current and which cancel blocking signals at the same time as power transistors of first pair are cut off at end of discharge. EFFECT: provision for preventing short circuits caused by throughput currents. 1 dwg