Method and apparatus for measurement of AC voltages in an...

Details Method and apparatus for measurement of AC voltages in an... Method and apparatus for measurement of AC voltages in an...

2006-12-27

2010-10-12

Barbee, Manuel L (Department: 2857)

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Electrical signal parameter measurement system

C702S104000, C324S076120

Reexamination Certificate

active

07813885

ABSTRACT:
A control system to measure a sinusoidal AC voltage in a heating, ventilation includes a controller and a circuit connected to the controller. The circuit generates a pulse voltage based upon the AC voltage. The pulse voltage has a pulse duration. The controller measures a measured pulse duration based on the pulse duration and determines the AC voltage based upon the measured pulse duration.

REFERENCES:
patent: 3720813 (1973-03-01), Badessa
patent: 4558226 (1985-12-01), Takada et al.
patent: 6826454 (2004-11-01), Sulfstede

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