AC/DC monitor system

Details AC/DC monitor system AC/DC monitor system

2005-02-15

2005-02-15

Zarneke, David (Department: 2829)

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

C324S426000, C320S132000

Reexamination Certificate

active

06856162

ABSTRACT:
A combined AC/DC monitoring system simultaneously monitors an AC power supply and a DC power supply in a mobile unit. The monitoring system is electrically isolated from an AC input source through an AC isolation transformer. A microcontroller digitally provides various computed variables from various digitized input signals. The monitoring system simultaneously displays a plurality of the computed variables while the system monitors for various user-selected high/low conditions of the computed variables. The system monitors AC power surges and can alternately displays a high voltage level for a predetermined time and a low voltage level for a predetermined time. An algorithm determines whether the AC voltage is a true sine wave or otherwise. The system monitors DC current on the high side, or positive terminal, of a battery. User selectable DC shunts are provided to measure a range of DC currents.

REFERENCES:
patent: 5363039 (1994-11-01), Kumar et al.
patent: 5656919 (1997-08-01), Proctor et al.
patent: 5895440 (1999-04-01), Proctor et al.
patent: 6573745 (2003-06-01), Raftari et al.

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