Removable transient voltage detector

Patent metadata

Field	Value
Publication number	US-10928426-B2
Application number	US-201816195040-A
Country	US
Kind code	B2
Filing date	Nov 19, 2018
Priority date	Sep 26, 2016
Publication date	Feb 23, 2021
Grant date	Feb 23, 2021

Abstract

An apparatus and method for detecting transient voltage at an electrical component of a circuit board is provided. The apparatus including a circuit including a comparator and a latch, wherein a first input of the comparator is electrically coupled to the electrical component, and the comparator receives a threshold voltage at a second input, where the comparator outputs either a high signal or a low signal in response to both the first input and the second input, and an output of the comparator is electrically coupled to an input of the latch such that the latch outputs a high signal in response to receiving a high signal from the comparator, and an indicator electrically coupled to an output of the latch, and where the apparatus is mounted non-permanently to the circuit board to provide a non-permanent electrical coupling between the comparator and the electrical component.

First claim

What is claimed is:

1. A method for detecting transient voltage at an electrical component of a circuit board, the method comprising:
non-permanently connecting a transient voltage detection device to the circuit board, wherein the transient voltage detection device comprises a comparator, a non-conductive platform, a non-conductive screw, one or more spring loaded fingers, and a depth gauge, the transient voltage detection device is capable of securely maintaining tension between the transient voltage detection device and the circuit board, wherein the transient voltage detection device provides both a stable physical connection between the transient voltage detection device and the circuit board, and an electrical connection between the transient voltage detection device and the electrical component,
wherein the non-conductive platform comprises a channel housing the non-conductive screw which controls a suction force of a suction mechanism, wherein the non-conductive screw and the suction mechanism control a temporary suction force between the circuit board and the electrical component, and the suction mechanism control comprises a non-conductive stiff support member in rigid contact with the non-conductive screw and an elastically-deformable membrane,
wherein the transient voltage detection device provides an electrical connection between the comparator and the electrical component, wherein an upper end of a first spring loaded finger of the one or more spring loaded fingers is electrically connected to the comparator, and a lower end of the first spring loaded finger provides an electrical connection to a contact pad of the electronic component;
measuring voltage at the electrical component with the transient voltage detection device, which comprises the comparator and a latch, wherein a first input of the comparator is electrically coupled to the electrical component, and the comparator receives a threshold voltage at a second input, wherein the comparator outputs either a high signal or a low signal in response to both the first input and the second input, and an output of the comparator is electrically coupled to an input of the latch such that the latch outputs a high signal in response to receiving a high signal from the comparator, and an indicator electrically coupled to an output of the latch such that the indicator activates in response to a high signal received from the latch, the transient voltage detection device is mounted non-permanently to the circuit board to provide a non-permanent electrical coupling between the comparator and the electrical component;
running a software program test on the circuit board;
determining a transient voltage based on the indicator; and
identifying transient voltage, based on the indicator of the transient voltage detection device.

2. The method of claim 1 , further comprising:
activating a bypass switch on the transient voltage detection device, which decouples the comparator from the latch, such that the output of the comparator is electrically coupled directly to the indicator, in response to activation of the bypass switch; and
running a direct-current transient voltage mode software program test of the circuit board.

3. The method of claim 1 , further comprising:
activating a reset switch electrically coupled to the latch, wherein the latch outputs a low signal in response to activation of the reset switch, deactivating the indicator.

Assignees

• IBM

Inventors

• Cocchini Matteo
• Cracraft Michael A

Classifications

• G01R19/0053

  Noise discrimination; Analog sampling; Measuring transients (measuring characteristics of individual pulses G01R29/02; digital sampling G01R19/2509; measuring noise figure G01R29/26) · CPC title

• G01R19/16576 Primary

  comparing DC or AC voltage with one threshold (G01R19/16514, G01R19/16519, G01R19/16528, G01R19/16533 and G01R19/1659 take precedence) · CPC title

• G01R1/206

  Switches for connection of measuring instruments or electric motors to measuring loads (switches in general H01H) · CPC title