Leopold J Johnson

US Patent:

46931198, Sep 15, 1987

Filed:

Jan 17, 1986

Appl. No.:

6/819947

Inventors:

Leopold J. Johnson - Valley Center CA

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

G01N 2900

US Classification:

73579

Abstract:

A lithium battery is provided with an energy monitor that continuously inates the energy remaining in the battery. An electrolytic coulometer is connected in series with the battery and has a cantilevered cathode which increases its mass in proportion to the total amount of current that flows from the battery. Since the mass of the cathode and hence its resonant frequency changes in proportion to the total current, a mechanical transducer in contact with the electrolytic coulometer causes the cantilevered cathode to resonate at different frequencies which is monitored to provide a continuous reading of remaining battery energy.

US Patent:

50634879, Nov 5, 1991

Filed:

Mar 22, 1990

Appl. No.:

7/497387

Inventors:

Leopold J. Johnson - Valley Center CA
Russell E. Hammond - La Jolla CA

Assignee:

The United States of America as represented by the Secrectary of the Navy - Washington DC

International Classification:

H02M 114
H02M 514
H02M 706

US Classification:

363 3

Abstract:

A polyphase transformer design is presented in which transformer output pors are accurately constructed in both voltage magnitude and relative phase angle. The design incorporates both main and auxiliary transformers that are used in unison to produce the accurately constructed phasors. The main transformer permits rough phasor adjustment to be made with the auxiliary transform permitting phasor fine tuning. Such a design is particularly suitable in transformer approaches that require output phases that are of a number not evenly divisible by three.

US Patent:

44490682, May 15, 1984

Filed:

Sep 22, 1983

Appl. No.:

6/534901

Inventors:

Leopold J. Johnson - Valley Center CA
David L. Carson - San Diego CA

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

H01L 4108

US Classification:

310316

Abstract:

A sonar compensation transformer is added to a sonar transceiver circuit to btain calibrated optimum performance from a sonar transducer using ceramic rings by slightly modifying the voltage of the transducer while at the same time allowing the transmit circuit to operate without appreciable change. The sonar compensation transformer is an improvement upon a conventional sonar transceiver circuit containing a transformer winding connected in series with a diode switch with the outer bounding connections of the transformer winding and the diode switch connected to the transducer element while the connection to the sonar transceiver is from a connection tapped into the winding of the sonar transformer and the connection from the outer bound of the diode switch. The sonar compensation transformer is connected in with a primary winding placed in parallel with the diode switch. The secondary winding is connected in the lead from the outside connection to the diode switch to the sonar transceiver, and is positioned to inductively interact with the primary winding placed in parallel across the diode switch.

US Patent:

51267144, Jun 30, 1992

Filed:

Dec 20, 1990

Appl. No.:

7/633550

Inventors:

Leopold J. Johnson - Valley Center CA

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

H01F 2724
H01F 2730

US Classification:

336 83

Abstract:

An integrated circuit transformer (58) which is constructed in a laminar hion is disclosed. The present invention includes a bottom plate (10) with cores (14) protruding from its upper surface (13) and a top plate (16) with several feed through holes (18). Both plates (10, 16) are made from high permeability magnetic material. Interposed between the top and bottom plates (10, 16) are at least one primary (19) and at least one secondary (40). The primary (19) has feed through holes (22), vertically aligned with the feed through holes (18) in the top (16), holes (20) to allow the cores (14) to protrude through, and tabs (26, 28) for connecting to the input circuit. The primary (19) is made of a laminate clad with an electrical conductor. The circuit which conducts the current around the cores is fabricated by etching special patterns of insulative gaps (24) into the electrical conductor. The secondary (40) has holes (42) to allow the cores (14) to protrude through.

US Patent:

56660472, Sep 9, 1997

Filed:

Oct 5, 1995

Appl. No.:

8/539643

Inventors:

Leopold J. Johnson - Valley Center CA
Russell E. Hammond - San Diego CA

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

H01F 2740

US Classification:

323359

Abstract:

A dielectric power transformer comprises a tuning inductor having a nonmatic core connected in parallel with a capacitive voltage divider. The dielectric power transformer transforms the voltage of an alternating current power source connected across the inductor into a voltage across a load connected to the capacitive voltage divider. The dielectric power transformer has a resonant frequency substantially equal to the frequency of the power source.

US Patent:

54264090, Jun 20, 1995

Filed:

May 24, 1994

Appl. No.:

8/250135

Inventors:

Leopold J. Johnson - Valley Center CA

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

H01F 1702
H01F 314

US Classification:

336178

Abstract:

A current controlled variable inductor comprises a magnetically saturable E" core having outer limbs each joined to a center limb by connecting limbs. A staggered series of flux bridges and air gaps are formed into alternating sides of the outer limbs. A bias winding on the center limb magnetically couples a direct current into the core to vary the inductance of a signal winding on the outer limbs. A secondary winding magnetically couples an output voltage from the core for application of the inductor as a tunable transformer.

US Patent:

50346970, Jul 23, 1991

Filed:

Jun 9, 1989

Appl. No.:

7/364405

Inventors:

Leopold J. Johnson - Valley Center CA

Assignee:

United States of America as represented by the Secretary of the Navy

International Classification:

H04B 102

US Classification:

330 63

Abstract:

A magnetic amplifier switch is connected to a transmitter and antenna of a LF transmitting system. The transmitter is operable to produce a signal which is modulated to first and second frequencies, for example "mark" and "space" frequencies, at different times. The magnetic switch is connected with inductors which are also connected with the transmitter and antenna. Opening and closing of the magnetic amplifier switch changes the inductance of the antenna such that the antenna is automatically tuned to resonance at the one or the other of the modulated frequencies being transmitted at a given time.

US Patent:

57195455, Feb 17, 1998

Filed:

Oct 12, 1994

Appl. No.:

8/323942

Inventors:

Leopold J. Johnson - Valley Center CA

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

H01F 2700

US Classification:

336180

Abstract:

A superconducting transformer comprises a superconducting primary layer arranged to conduct an externally supplied primary electric current around a primary core to establish a magnetic flux through the primary core. The superconducting primary layer is formed on a primary substrate of electrically insulating, non-magnetic material. A superconducting secondary layer is arranged to conduct a secondary electric current around a secondary core. The superconducting secondary layer is formed on a secondary substrate of electrically insulating, non-magnetic material. The primary and secondary cores are made of a non-saturating material. The secondary electric current is generated by stacking the layers to couple the magnetic flux from the primary core to the secondary core. Superconducting vias are formed through the primary, isolation, and secondary layers for making external connections to the transformer. The superconducting transformer may be enclosed within a capacitor shield comprising an insulating layer, an inner superconducting layer, a dielectric layer, and an outer superconducting layer.