Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific current responsive fault sensor
Reexamination Certificate
2005-12-13
2005-12-13
Sircus, Brian (Department: 2836)
Electricity: electrical systems and devices
Safety and protection of systems and devices
With specific current responsive fault sensor
Reexamination Certificate
active
06975495
ABSTRACT:
A circuit configuration and a method for determining a current drawn from a mains by a converter through a dc voltage intermediate circuit, replaces a required pulse-resistant input current measuring resistor with a conductor track of the circuit configuration itself. Since the input current drawn from the mains by the dc voltage intermediate circuit is on average equal to the output current delivered to the converter, the present resistance of the conductor track is given by the resistance of the measuring resistor downstream of the dc voltage intermediate circuit, weighted with the quotient of the input and output voltage drops. In that way, the mains current and therewith the power factor can be influenced by way of a current limiter without requiring an expensive pulse-resistant special resistor for mains current measurement.
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Benenson Boris
Diehl AKO Stiftung & Co. KG
Greenberg Laurence A.
Locher Ralph E.
Sircus Brian
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