Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – With auxiliary means to condition stimulus/response signals
Reexamination Certificate
2006-03-21
2006-03-21
Deb, Anjan (Department: 2858)
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
With auxiliary means to condition stimulus/response signals
C324S609000, C324S522000
Reexamination Certificate
active
07015702
ABSTRACT:
In order to measure the current in a shunt, the voltage drop in the resistor of said shunt is evaluated as a measurement of the current. Normally, galvanic separation of the measuring device is required for high-potential shunts. A digital measuring signal provides the clock pulse for modulation of the supply current for the measuring device after an A/D conversion. The modulated supply current is also used as a carrier for the measuring information. In the associated evaluation device, an A/D converter and a modulation unit are arranged downstream from an amplifier for voltage signal which is picked off from the shunt. The modulated measuring signal is transmitted to an evaluation device.
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National Semiconductor; www.Power.National.Com, no date.
Deb Anjan
Harness & Dickey & Pierce P.L.C.
Natalini Jeff
Siemens Aktiengesellschaft
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