Circuit for simulating an electrical load
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United States of America Patent
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Jun 17, 2014
Grant Date -
Jun 9, 2011
app pub date -
Jul 15, 2009
filing date -
Jul 21, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
A circuit for simulating an electrical load at a terminal of a test circuit having at least one first switch and at least one second switch includes a third switch connected to the first switch of the test circuit via a first external connection point. A fourth switch is connected to the second switch of the test circuit via a second external connection point. The first switch and the second switch are connected via a shared, first internal connection point to the terminal of the test circuit and the third switch and the fourth switch are connected via a shared, second internal connection point such that that the first switch, the second switch, the third switch and the fourth switch form an H-bridge circuit. A voltage source is configured to provide the first and second external connection points with a supply voltage. A controllable voltage source is connected in a transverse bridge branch between the terminal and the second internal connection point. An inductance is active in the transverse bridge branch. A current-control unit is operable on the controllable voltage source so as to adjust, to a predetermined setpoint current, an actual current flowing over the terminal of the test circuit and over the transverse bridge branch.
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