ELECTRICAL PROBE
First Claim
1. An electrical probe, comprising:
- a coaxial cable having an inner conductor and an outer conductor, an extension portion of the inner conductor extending beyond the outer conductor at a probe end of the cable; and
a conductive whisker including;
a first portion separated from and extending a distance along the extension portion such that the first portion and the extension portion form a first capacitor; and
a second portion having a probe tip for receiving an input test signal from a circuit node under test.
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Accused Products
Abstract
Methods, devices, and systems for probing electrical circuits without loading the circuits are described herein. One embodiment of an electrical probe includes a coaxial cable having an inner conductor and an outer conductor, an extension portion of the inner conductor extending beyond the outer conductor at a probe end of the cable. The electrical probe includes a conductive whisker having a first portion separated from and extending a distance along the extension portion such that the first portion and the extension portion form a first capacitor and a second portion having a probe tip for receiving an input test signal from a circuit node under test.
20 Citations
24 Claims
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1. An electrical probe, comprising:
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a coaxial cable having an inner conductor and an outer conductor, an extension portion of the inner conductor extending beyond the outer conductor at a probe end of the cable; and a conductive whisker including; a first portion separated from and extending a distance along the extension portion such that the first portion and the extension portion form a first capacitor; and a second portion having a probe tip for receiving an input test signal from a circuit node under test. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An electrical probe, comprising:
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a coaxial cable having an inner conductor and an outer conductor, the coaxial cable coupled to an input resistor at an input end, wherein an extension portion of the inner conductor extends beyond the outer conductor at a probe end of the cable; and a conductive whisker including; a first portion separated from and extending a distance along the extension portion such that the first portion and the extension portion produce a capacitive coupling effect in series with the input resistor; and a second portion having a probe tip for receiving an input test signal from a circuit node under test. - View Dependent Claims (12, 13, 14, 15, 16)
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17. An electrical probe, comprising:
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a coaxial cable having an inner conductor and an outer conductor separated by a first dielectric material and providing a first capacitive relationship, wherein an extension portion of the inner conductor extends beyond the outer conductor at a probe end of the cable; and a conductive whisker including; a first portion separated from and extending a distance along the extension portion such that the first portion and the extension portion provide a second capacitive relationship in series with the first capacitive relationship such that the first and second capacitive relationships form a capacitive voltage divider; and a second portion having a probe tip for receiving an input test voltage signal from a circuit node under test. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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Specification