Method and apparatus for the electrical testing of printed circuit boards employing intermediate layer grounding
First Claim
1. Apparatus for electrical testing of an electrical circuit having first and second side surfaces and including a plurality of conductors, the apparatus comprising:
- at least one stimulation electrode disposed adjacent at least one of said first and second side surfaces of said electrical circuit and being operative to apply thereto a stimulation electromagnetic field in a non-contact manner;
at least one sensing electrode disposed adjacent at least one of said first and second side surfaces of said electrical circuit and being operative to sense a resulting electromagnetic field produced by application of said stimulation electromagnetic field at various locations thereon in a non-contact manner;
a ground interconnect grounding an intermediate layer of said electrical circuit;
wherein at least one of said at least one stimulation electrode and said at least one sensing electrode includes at least two electrodes.
0 Assignments
0 Petitions
Accused Products
Abstract
This invention discloses an apparatus for electrical testing of an electrical circuit (12) having first and second side surfaces and including a plurality of conductors, the apparatus including at least one stimulation electrode (14, 16, 20) disposed adjacent at least one of the first and second side surfaces of the electrical circuit and being operative to apply thereto a stimulation electromagnetic field in a non-contact manner, at least one sensing electrode (25) disposed adjacent at least one of the first and second side surfaces of the electrical circuit and being operative to sense a resulting electromagnetic field produced by application of the stimulation electromagnetic field at various locations thereon in a non-contact manner wherein at least one of the at least one stimulation electrode and the at least one sensing electrode includes at least two electrodes at least one of which is disposed adjacent each of the first and second side surfaces of the electrical circuit. A method for electrical testing of an electrical circuit having first and second side surfaces and including a plurality of conductors is also disclosed.
-
Citations
41 Claims
-
1. Apparatus for electrical testing of an electrical circuit having first and second side surfaces and including a plurality of conductors, the apparatus comprising:
-
at least one stimulation electrode disposed adjacent at least one of said first and second side surfaces of said electrical circuit and being operative to apply thereto a stimulation electromagnetic field in a non-contact manner;
at least one sensing electrode disposed adjacent at least one of said first and second side surfaces of said electrical circuit and being operative to sense a resulting electromagnetic field produced by application of said stimulation electromagnetic field at various locations thereon in a non-contact manner;
a ground interconnect grounding an intermediate layer of said electrical circuit;
wherein at least one of said at least one stimulation electrode and said at least one sensing electrode includes at least two electrodes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
-
-
21. A method for electrical testing of an electrical circuit having first and second side surfaces and including a plurality of conductors, the method comprising:
-
applying an electromagnetic field in a non-contact manner to at least one of first and second side surfaces of said electrical circuit;
grounding an intermediate metal layer in said electrical circuit; and
sensing a resulting electromagnetic field in a non-contact manner at various locations along at least one of said first and second side surfaces of said electrical circuit, wherein at least one of said applying and sensing employs non-contact electrodes. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
-
Specification