US 9,438,129 B2Granted

Input/output power and signal transfer isolator device

OwnerCesar Ladron de Guevara, Leonard Davidsoninventors

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Abstract

Input/output power and signal transfer and power and signal isolator device using pulsed, alternating or high frequency signal current having a capacitive structure which provides power and signal limiting control, unidirectional power and signal transfer and input/output decoupling and transceiver-receiver isolation barrier. The device includes at least two decoupled input electrodes arranged in parallel to each other, and at least two decoupled output electrodes arranged in parallel to each other. Each electrode is connected to at least one terminal. Each electrode has a surface that which is opposed to another electrode surface with at least one layer of dielectric material therebetween. The input electrodes are decoupled from the output electrodes by dielectric material and are disposed such that two output electrodes are separately disposed external to the two input electrodes.

Claims22

Dependent claims

A capacitive device for an alternating current (AC) circuit interposed between an AC source and a load, comprising:

a set of terminals comprising at least first and second input terminals and at least first and second output terminals that are different than said first and second input terminals, said first and second input terminals and said first and second output terminals being configured in the capacitive device such that when said first and second input terminals are connected to the AC source and said first and second output terminals are connected to the load, electrical power from the AC source enters the capacitive device through said first and second input terminals and is moved forward unidirectional to the load through the capacitive device and said first and second output terminals;
and
at least one power transfer and isolator module that transfers power from said first and second input terminals to said first and second output terminals, each of said least one power transfer and isolator module comprising:
a first set of two electrode assemblies comprising two decoupled input electrodes, a first one of said input electrodes being coupled to said first input terminal and a second one of said input electrodes being coupled to said second input terminal;
and
a second set of electrode assemblies comprising two decoupled output electrodes, a first one of said output electrodes being coupled to said first output terminal and a second one of said output electrodes being coupled to said second output terminal;
said first and second input electrodes both being situated between said first and second output electrodes,
said first and second input electrodes being spaced apart from one another and being spaced apart from an adjacent one of said first and second output electrodes to enable capacitance to develop between each of said first and second input electrodes and each of said first and second output electrodes when current flows through the AC circuit,
whereby properties of the first and second input electrodes, the first and second output electrodes and the dielectric material are such that an equivalent differential capacitance of input capacitance is greater than a value of output capacitance.

6 more elements

A method of moving power forward from an alternating current (AC) source to a load through an AC circuit using a capacitive arrangement including at least one power transfer and isolator module comprising first and second decoupled output electrodes, first and second decoupled input electrodes arranged between the first and second output electrodes, and dielectric material disposed between each adjacent pair of electrodes, the method comprising:

connecting the first and second input electrodes to the AC source via first and second input terminals, the first input electrode being connected to the AC source via the first input terminal and the second input electrode being connected to the AC source via the second input terminal;
connecting the first and second output electrodes to the load via first and second output terminals that are different than the first and second input terminals, the first output electrode being connected to the load via the first output terminal and the second output electrode being connected to the load via the second output terminal;
and
inducing a potential across the first and second output electrodes connected to the load by capacitance between each of the first and second input electrodes connected to the AC source and each of the first and second output electrodes connected to the load such that electrical power from the AC source enters the capacitive arrangement through the first and second input terminals and is moved forward unidirectional to the load through the capacitive arrangement and the first and second output terminals, and
whereby properties of the first and second input electrodes, the first and second output electrodes and the dielectric material are such that an equivalent differential capacitance of input capacitance is greater than a value of output capacitance,
whereby input circuitry connected to the first and second input terminals is isolated from being compromised by a condition resulting from a fault experienced in output circuitry connected to the first and second output terminals.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/618,067Filed 14 Sep 2012 · us provisional application
Priority: 6 Oct 2011
Published: US 2013/0088092 A111 Apr 2013
Granted: 6 Sep 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

H02M 5/08
Using impedances: using capacitors only
H01G 4/385
Multiple capacitors, i.e. structural combinations of fixed capacitors: single unit multiple capacitors, e.g. dual capacitor in one coil
H01G 4/40
Fixed capacitors; Processes of their manufacture: structural combinations of fixed capacitors with other electric elements, the structure mainly…
H02M 1/4266
Arrangements for improving power factor of AC input: using passive elements

Family

Application61/626,985Us provisional application · filed 6 Oct 2011
Application61/742,875Us provisional application · filed 21 Aug 2012
US 2013/0088092 A1Pre-grant publication · published 11 Apr 2013
US 9,438,129 B2This patent

From the US filing history. Foreign family members aren’t listed.

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