Dc power rail probes and measurement methods
AssigneeKeysight Technologies, Inc.
InventorsEdward Vernon Brush, Michael Thomas McTigue
Life of this patent
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Abstract
A direct current (DC) power rail probe includes a single-ended probe tip, and a two-path circuit having an input coupled to the single-ended probe tip and an output configured for connection to measurement equipment such as an oscilloscope. The two-path circuit includes an alternating current (AC) path in parallel with a feed-forward (FF) path, the AC path including a capacitive element, and the FF path including a series connection of at least one resistive element and an amplifier. The probe tip and two-path circuit are selectively operable in a non-attenuating mode and an attenuating mode.
Claims20
A direct current (DC) power rail probe, comprising:
- a single-ended probe tip;
- and
- a two-path circuit having an input coupled to the single-ended probe tip and an output configured for connection to measurement equipment, the two-path circuit including an alternating current (AC) path in parallel with a feed-forward (FF) path, the AC path including a capacitive element, and the FF path including a series connection of at least one resistive element and an amplifier,
- wherein the single-ended probe tip and two-path circuit are selectively operable in a non-attenuating mode and an attenuating mode.
A measurement system comprising:
- an oscilloscope;
- and
- a single-ended direct current (DC) power rail probe connected to an input of the oscilloscope and configured to be selectively operative in a non-attenuating mode and an attenuating mode.
A method of measuring a direct current (DC) voltage, comprising:
- attaching a single-ended DC power rail probe to an input of an oscilloscope;
- changing an attenuation of the single-ended DC power rail probe from a non-attenuating mode to an attenuating mode;
- and
- contacting the DC power rail probe to a DC power rail to measure a voltage of the DC power rail in the attenuating mode.
Dependencies are inferred from the claim text.