Switching device internal diode detection circuit and method of

Details Switching device internal diode detection circuit and method of Switching device internal diode detection circuit and method of

1998-04-24

2000-02-01

Brown, Glenn W.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Nonquantitative

324767, 340644, G01R 1915, G01R 31327

Patent

active

060207353

ABSTRACT:
An internal diode detection circuit for a device under test (DUT), a method of operating and a test fixture employing the same. In one embodiment, the internal diode detection circuit includes a source of electrical power that applies a reverse bias voltage to the DUT. The internal diode detection circuit also includes a current indicator, series-coupled to the DUT, that generates a signal when a current flows through the DUT. The signal indicates a presence of an internal diode in the DUT.

REFERENCES:
patent: 3914690 (1975-10-01), Shelnutt
patent: 4027236 (1977-05-01), Stewart
patent: 5428294 (1995-06-01), Teel, Jr.
S. Clemente, A. Dubhashi and B. Pelly, "IGBT Characteristics," E-3-E-14. (date unavailable).

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