Browse Prior Art Database

Field Programmable PC Board Applique

IP.com Disclosure Number: IPCOM000119872D
Original Publication Date: 1991-Mar-01
Included in the Prior Art Database: 2005-Apr-02
Document File: 2 page(s) / 54K

Publishing Venue

IBM

Related People

Williams, BEB: AUTHOR [+2]

Abstract

The programmable applique pictured in Fig. 1 is a novel and inexpen- sive technology designed to function as a simple means to manually disrupt one or more electronic circuits on a printed circuit board assembly.

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This is the abbreviated version, containing approximately 78% of the total text.

Field Programmable PC Board Applique

      The programmable applique pictured in Fig. 1 is a novel
and inexpen- sive technology designed to function as a simple means
to manually disrupt one or more electronic circuits on a printed
circuit board assembly.

      The applique does not require additional board space to be
mounted and is, therefore, desirable for densely populated, as well
as low cost, assembly objectives.

      In many applications it is desirable to provide the capability
to modify the function of a printed circuit assembly in stock or in
the user environment.  This can be done many ways for minor (7-12)
wire changes.  Breaking the connections with DIP switches or jumpers
is most often used. These techniques require PC board space and take
up pre- cious wiring channel space on the board.  An alternative is
to delete circuit wires directly on the board.  The disadvantage of
this method is obvious in that it requires a special tool or knife
and, thus, is not easily "field programmable".

      The use of the programmable applique allows the board
function(s) to be changed in the field stock or customer environments
by simply folding or cutting the applique along the perforations and
removing that portion.  The technique is one-way programmable,
allowing the removal of multiple connections without tools, switch or
jumpers.

      The applique is a thin FR-4 board material.  With a thickness
of 0.007" to 0.010", it could be perforated...