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Title: METHOD OF LOCATING GROUNDS

Abstract

ABS>This patent presents a method for locating a ground in a d-c circult having a number of parallel branches connected across a d-c source or generator. The complete method comprises the steps of locating the ground with reference to the mildpoint of the parallel branches by connecting a potentiometer across the terminals of the circuit and connecting the slider of the potentiometer to ground through a current indicating instrument, adjusting the slider to right or left of the mildpoint so as to cause the instrument to indicate zero, connecting the terminal of the network which is farthest from the ground as thus indicated by the potentiometer to ground through a condenser, impressing a ripple voltage on the circuit, and then measuring the ripple voltage at the midpoint of each parallel branch to find the branch in which is the lowest value of ripple voltage, and then measuring the distribution of the ripple voltage along this branch to determine the point at which the ripple voltage drops off to zero or substantially zero due to the existence of a ground. The invention has particular application where a circuit ground is present which will disappear if the normal circuit voltage is removed.

Inventors:
Issue Date:
OSTI Identifier:
4307536
Patent Number(s):
2823350
Assignee:
U.S. Atomic Energy Commission
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01R - MEASURING ELECTRIC VARIABLES
NSA Number:
NSA-12-010268
Resource Type:
Patent
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-58
Country of Publication:
United States
Language:
English
Subject:
PATENTS; BATTERIES; CAPACITORS; CIRCUITS; CURRENTS; ELECTRIC POTENTIAL; ELECTRONIC EQUIPMENT; PATENT; RESISTORS; VARIATIONS

Citation Formats

Macleish, K G. METHOD OF LOCATING GROUNDS. United States: N. p., 1958. Web.
Macleish, K G. METHOD OF LOCATING GROUNDS. United States.
Macleish, K G. Tue . "METHOD OF LOCATING GROUNDS". United States.
@article{osti_4307536,
title = {METHOD OF LOCATING GROUNDS},
author = {Macleish, K G},
abstractNote = {ABS>This patent presents a method for locating a ground in a d-c circult having a number of parallel branches connected across a d-c source or generator. The complete method comprises the steps of locating the ground with reference to the mildpoint of the parallel branches by connecting a potentiometer across the terminals of the circuit and connecting the slider of the potentiometer to ground through a current indicating instrument, adjusting the slider to right or left of the mildpoint so as to cause the instrument to indicate zero, connecting the terminal of the network which is farthest from the ground as thus indicated by the potentiometer to ground through a condenser, impressing a ripple voltage on the circuit, and then measuring the ripple voltage at the midpoint of each parallel branch to find the branch in which is the lowest value of ripple voltage, and then measuring the distribution of the ripple voltage along this branch to determine the point at which the ripple voltage drops off to zero or substantially zero due to the existence of a ground. The invention has particular application where a circuit ground is present which will disappear if the normal circuit voltage is removed.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1958},
month = {2}
}