VOLTAGE SWITCHING UNIT WITH PROTECTION AGAINST CURRENT OVERLOAD Russian patent published in 2010 - IPC H03K17/08 H02M3/156 

FIELD: radio engineering.

SUBSTANCE: voltage switching unit with protection against current overload includes electronic switch which supplies the power to load unit and to overload freezing unit. Overload freezing unit freezes the activation of electronic switch at initial supply of input voltage and provides the deactivation of electronic switch when the current is higher than the specified one. Additionally introduced shaper of delayed pulse unlocks the electronic switch, provides the specified delay relative to the supply of input voltage.

EFFECT: improving reliability of the device owing to excluding the current stabilisation mode at any kinds and modes of load, and enlarging functional capabilities owing to tuning of current commutation time relative to supply of input voltage.

2 cl, 4 dwg