Marconi Instruments Limited

Robert J Williams

Mark A Laing

A method of testing the electrical conductivity of a connection between an integrated circuit device (9) and a circuit board (7) to which the device (9) is connected. The device (9) includes a current path between a further connection (13) thereto and the connection (15) to be tested. The method comprises the steps of, while the circuit is inoperative: applying via the board (8) a potential of a first amount to the further connection (13); applying via the board (7) a potential of a second different amount to the connection (15) being tested; and positioning a probe adjacent the device (9) to sense indirectly current in the current path, the presence of current indicating that the connection (15) being tested is conductive.

Growing community of inventors

Harpenden, United Kingdom

Robert J Williams