Patent ID: 8253432
Filing Date: 2012-08-28
Classification: G01R

Abstract:
1. A test system, comprising: a device under test (DUT) comprising an enclosure and one or more tested circuits received in the enclosure, wherein the enclosure defines a socket for grounding; a power transformer box to transform direct current (DC) power into suitable electrical signals to test the tested circuits in the DUT, the power transformer box comprising a grounded enclosure; and a fork assembly connected to the DC power to control input of the power transformer box, and adapted to be inserted into the socket in the enclosure of the DUT to ensure that the enclosure of the DUT is grounded, the fork assembly comprising: a fixation board; a ground portion comprising a first arm and a second arm located opposite to the first arm, wherein one end of each of the first and second arms is connected to the fixation board, and a second end of each of the first and second arms is free; a trigger portion comprising a third arm and a fourth arm located opposite to the third arm, wherein one end of each of the third and fourth arms is connected to the fixation board; a switch fixed on a second end of the third arm, and comprising an always-off contact connected to the DC power in series to control the input of the power transformer box; and a resilient element configured on a second end of the fourth arm and corresponding to the always-off contact of the switch; wherein the first, second, third and fourth arms are conductively and resiliently connected together to the grounded enclosure of the power transformer box.