SAFETY LOOP VOLTAGE CONTROL DIAGRAM Russian patent published in 2023 - IPC B66B5/02 G05F1/46 

FIELD: electrical engineering.

SUBSTANCE: circuit for regulating the voltage of the safety loop in lifts. The present application proposes a safety loop voltage regulation circuit, which contains a power control chip (1), as well as a safety loop (2) and a contact switch (CS) connected to the power control chip (1). The safety loop (2) contains a plurality of safety switches (S1, S2, ..., S(n)). The initial end of the safety loop (2) is connected to the power supply terminal (SVCC) of the power control chip (1), and the end of the safety loop (2) is connected to the ground end (SGND) of the power control chip (1) through a contact switch (CS). The power control chip (1) also includes a feedback output (FB) connected to the end of the safety loop (2).

EFFECT: stabilizing the operation of the safety loop and the lift system by providing the operating voltage in the contact switch.

7 cl, 2 dwg