Patent ID: 7560948

Claim:
A human body model electrostatic discharge test device for testing the response of a device under test (DUT) to a high voltage test pulse, said DUT having a first terminal to be tested and a second terminal connected to a ground return path, said test device comprising: a voltage source for generating a predetermined high voltage at an output terminal with respect to said ground return path; a first switch coupled to said output terminal; a series combination of a capacitor and a resistor having a first terminal coupled to said switch and a second terminal coupled to said first terminal of said DUT; a second switch coupled between said first terminal of said DUT and said second terminal of said DUT; a third switch having a first switch contact coupled to said first terminal of said series combination of a capacitor and a resistor and a second switch contact coupled to said first terminal of said DUT; and a control circuit for selectively closing said first switch to cause the high voltage on said output terminal to be coupled to said series combination of a capacitor and a resistor, to cause said capacitor to charge and to cause the charging current to pass through the DUT, for causing said second switch to be closed after said HBM pulse has been generated but before said first switch is opened, and for causing said third switch to be closed after said HBM pulse has been generated and during the time that said second switch is closed.