FIELD: electricity.
SUBSTANCE: invention can be used for protection of secondary power supplies of electronic switches from current overloads. Present invention consists in that voltage switch with over-current protection comprises series-connected current sensor, electronic switch, load unit, as well as control transistor, a circuit for negative feedback by current switch and circuit for positive feedback by voltage drop on switch, circuit for positive feedback by voltage drop on switch further includes a delay element, preventing its operation during a preset time interval.
EFFECT: possibility of maintaining normal functioning of load.
7 cl, 1 dwg
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