Circuit arrangement for testing the correct functioning of circuit(s)
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United States of America Patent
Stats
-
Feb 13, 1990
Grant Date -
N/A
app pub date -
Sep 29, 1988
filing date -
Oct 14, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
There is disclosed a circuit arrangement including a load (7) and a current source (1) for supplying current to the load via a current path with a winding (3). A core of magnetizable material (2) is coupled inductively with the winding and a Hall effect transducer (4) detects magnetic flux in the core for use in producing an output indication dependant on the magnitude of the load current. For testing the correct functioning of circuit(s), the circuit arrangement is further provided with an additional winding (6) on the magnetizable core, through which a further current source supply a further current, in which the core is also inductively coupled so that the transducer also detects flux in the core due to the further current.
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