Protective circuit and method for operating said protective...

Details Protective circuit and method for operating said protective... Protective circuit and method for operating said protective...

2007-05-29

2007-05-29

Jackson, Stephen W. (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific voltage responsive fault sensor

C361S115000

Reexamination Certificate

active

10633757

ABSTRACT:
Protective circuit and a method for operating said protective circuit in particular for overvoltage protection for an electronic control system for a motor vehicle protective circuit, comprising a control unit (1) and a switch unit, with the switch unit monitoring an input voltage of a voltage regulator (2), which is directly or indirectly associated with the supply voltage (VCC) of the control unit (1). If this input voltage (UBAT) exceeds a predetermined threshold voltage (USCHWELLE), the control unit (1) switches in one or more loads. If the control unit has an idle mode and an operating mode, it is switched from idle mode to operating mode and if necessary a further load (RL) is switched in.

REFERENCES:
patent: 4093900 (1978-06-01), Plunkett
patent: 6232754 (2001-05-01), Liebler et al.
patent: 6473284 (2002-10-01), Ilic et al.
patent: 197 42 391 (1998-11-01), None
patent: 197 55 259 (1999-06-01), None

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