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At least 1,207 records · Page 67

Locating ''sneak paths'' in electrical circuitry

Use of a matrix system wherein circuit pin connections are assigned arbitrary designators and these used in formation of the matrix is illustrated. The matrix is a format that shows the current paths.

Dannback, T. M.↗

Circuit board hole coordinate locator concept

Fixed light source registers the x and y coordinates of holes in a fixed opaque template. A first surface parabolic mirror and a set of photocells are used to detect the passage of light through the individual holes.

Samuel, L. W.↗