Liquified nitrogen thermal checking of electronic circuitry

Details Liquified nitrogen thermal checking of electronic circuitry Liquified nitrogen thermal checking of electronic circuitry

1992-10-19

1993-06-29

Yasich, Daniel M.

Thermal measuring and testing

Leak or flaw detection

With heating or cooling of specimen for test

62293, 324158F, 374 57, G01N 2572, G01R 3102

Patent

active

052229998

ABSTRACT:
Electronic circuitry 22, 24, 26 is thermally checked by cooling with liquified nitrogen from a cryogenic delivery unit 19, directly by means of a stream 10 or a spray 28 delivered through an aperture 11, 30 of the delivery unit 19 spaced from the surface of the circuitry.

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