Electrical resistors – Shunt type
Patent
1993-01-15
1994-04-05
Lateef, Marvin M.
Electrical resistors
Shunt type
361648, 338226, 338232, H01C 700, H02B 120
Patent
active
053009177
ABSTRACT:
A junction box incorporating an integrally formed shunt busbar. The shunt busbar incorporates a first pair of terminals to act as leads to couple the shunt busbar in a current loop of a circuit, and a second pair of terminals to couple a voltage sensing device across a portion of the shunt busbar. The voltage sensing device is preferably a high input impedance voltage comparator. The input impedance of the voltage comparator is great enough to negate the affect of the internal resistance of the mating terminals of the busbar. Furthermore, the second pair of terminals is located on the shunt busbar such that the terminal resistances thereof are outside of the current loop. The electrical busbar is preferably mounted in a suitable insulating housing. When the shunt busbar of the present invention is connected to the high input impedance voltage comparator, a circuit path that allows for easily and accurately measuring the voltage drop across the busbar is made possible. This is accomplished while maintaining adequate current flow to the load for testing purposes.
REFERENCES:
patent: 4096541 (1978-06-01), Bohin et al.
patent: 4689718 (1987-08-01), Maue et al.
"A Comprehensive Guide To Resistive Shunts And Current Sensors", Vishay Electronic Components, Catalog CO191, 1991.
Hotra Zenon
Maue H. Winston
Yamai Tomoyuki
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