| 摘要 |
1. Circuit protecting semi-conductor power elements against exceeding of the permitted voltage, consisting of two or more similarly constructed current lines, characterized in that the output potential differences between the current lines (A1, A2,...An) taken at the point of connection of the cathodes of the first diodes (D1) and the anodes of the second diodes (D2) are fed to a separator (S) and then to a threshold measuring circuit (UP) and a blocker (B), which causes the blocking of the gate pulse generator (GIB) and the regulator (RE).<IMAGE>
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