TRANSISTOR KEY WITH SHORT-CIRCUIT PROTECTION Russian patent published in 2015 - IPC H03K17/08 

FIELD: electricity.

SUBSTANCE: transistor key with short-circuit protection comprises a load, a semiconductor switch, a switch-off circuit for the semiconductor switch, a NOR element, an OR element, the first, second, third, fourth, fifth and sixth resistors, n-p-n- and p-n-p-transistors, a relay element, a relay element operation level setter, a diode, the first and second power supply bus, a common bus. The switch-off circuit for the semiconductor switch comprises the p-n-p- and n-p-n-transistors, the first, second, third and fourth resistors and an inverter.

EFFECT: improving operation reliability of the transistor key.

2 cl, 1 dwg