System for measuring low current with contact making and breakin

Details System for measuring low current with contact making and breakin System for measuring low current with contact making and breakin

1997-11-03

1999-07-27

Karlsen, Ernest F.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With coupling means

324 725, 324132, G01R 120, G01R 1900

Patent

active

059296267

ABSTRACT:
A contact making and breaking device improves the dielectric absorption property of capacitance between one signal wire brought out from a reed switch and an conductive casing. A low current measurement system using the contact making breaking device greatly shortens the measurement waiting time when low current is measured. The contact making and breaking device includes a reed switch with first and second signal wires brought out from either end, a conductive casing, and an insulating material formed between at least the first signal wire and the conductive casing. A tubular conductor is emplaced in the region in which the insulating material is formed and at least partially encloses the reed switch. The tubular conductor is connected to the first signal wire.

REFERENCES:
patent: 2624847 (1953-01-01), Jesse et al.
patent: 2685673 (1954-08-01), Avins
patent: 2884597 (1959-04-01), Miller
patent: 5252936 (1993-10-01), Norimatsu
patent: 5512838 (1996-04-01), Roach

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