Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific voltage responsive fault sensor
Reexamination Certificate
2006-06-13
2006-06-13
Leja, Ronald (Department: 2836)
Electricity: electrical systems and devices
Safety and protection of systems and devices
With specific voltage responsive fault sensor
Reexamination Certificate
active
07061738
ABSTRACT:
A protective circuit for limiting the voltage for a device to be protected, particularly a load with an upstream-connected voltage and current limiting device. The device to be protected is provided in an output circuit of the protective circuit and is separable by means of a switching element, a voltage detector being provided with an electronic switch on the one hand and a voltage sensor on the other. The control terminal of the electronic switch is in electrical operative connection with the voltage sensor. A microdevice with a control circuit is provided, the microdevice having the switching element and being designed with a high input resistance of the control circuit. The control circuit is galvanically separated from the output circuit and switchable by the control circuit. The output circuit in the opened state has a galvanic separation of its output terminals.
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Über- und Unterspannungsschutz, Bosma, Philip E., Elektro Zeitschrift für Electronik & Computertechnik, Jul.-Aug. 1995.
Electronische Universalsicherung, Elektor Zeitschrift für Elecotronik & Computertechnik, Mar. 1997.
Fey Wilhelm
Krause Ernst
Leja Ronald
Pepperl & Fuchs GmbH
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