Measuring board having an optically driven switch and I/O termin

Details Measuring board having an optically driven switch and I/O termin Measuring board having an optically driven switch and I/O termin

1997-04-07

1998-10-13

Le, Que

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

250214R, 324753, H01J 4014

Patent

active

058215298

ABSTRACT:
There is provided a measuring board, in which an I/O switch is formed in the vicinity of an I/O terminal on the board and no deformation occurs in the wave form of an input signal. In the vicinity of the I/O terminal on the measuring board, on which a device to be measured (DUT) is mounted and in which testing is performed for the I/O terminal, there are provided a plurality of optically driven switches, each of which is composed of a photoconductive switch having electrodes with an electrode gap of a specified width on a semi-insulating semiconductor substrate and a semiconductor laser provided so as to irradiate the electrode gap. By these optically driven switches, input and output switching is performed for the I/O terminal.

REFERENCES:
patent: 4827437 (1989-05-01), Blanton

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