Utility ground detection
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 13, 2018
Issued Date -
N/A
app pub date -
Nov 30, 2012
filing date -
Jun 1, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
In an embodiment, a missing utility ground detection circuit includes a pair of balanced resistors each connected to receive utility voltage from a different one of a pair of utility power lines, the balanced resistors being connected together at a summing node to be capable of summing the voltages from the pair of utility power lines. It includes an unbalance resistor connected to shunt voltage from one of the utility power lines. It has a summing amplifier with an input coupled to the summing node and to a reference voltage, and an input coupled to a second reference voltage. It has an averaging circuit connected at the output of the summing amplifier. A comparator is provided having an input connected to the averaging circuit an input connected to a threshold voltage.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2012 Application Filing Year
- G01R Class
- 4082 Applications Filed
- 3482 Patents Issued To-Date
- 85.31 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- G01R Class
- 0 % this patent is cited more than
- 7 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Sep 13, 2025 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Sep 13, 2029 |
