US726413A - Transmitting and receiving for hertzian waves. - Google Patents

Transmitting and receiving for hertzian waves. Download PDF

Info

Publication number
US726413A
US726413A US1901080723A US726413A US 726413 A US726413 A US 726413A US 1901080723 A US1901080723 A US 1901080723A US 726413 A US726413 A US 726413A
Authority
US
Grant status
Grant
Patent type
Prior art keywords
apparatus
solenoid
applied
waves
receiving
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
Inventor
Eugene Ducretet
Original Assignee
Eugene Ducretet
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Grant date

Links

Images

Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F21/00Variable inductances or transformers of the signal type
    • H01F21/005Inductances without magnetic core

Description

No. 726,413. PATENTED APR. 28, 1903.

E. DUGRETET.

TRANSMITTING AND RECEIVING APPARATUS FOR HERTZIAN WAVES. APPLICATION FILED NOV. 1, 1901.

NOMD L.

. M m $5M! m: Norms Puma co, PHOTO-LITHO.. wasnmm'o'v u.

UNITED STATES" EUGENE DUORETET,

PATENT OFFICE.

OF PARIS, FRANCE.

TRANSMITTING AND RECEIVING APPARATUS FOR HERTZIAN WAVES.

SPECIFICATION forming part of Letters Patent No. 726,413, dated April 28, 1903.

Application filed November 1, 1901. Serial No. 80,723. (No model.)

To (tZZ whom, it may concern:

Be it known that I, EUGENE Duonnrn'r, a citizen of the French Republic, and a resident of Paris, France, have invented certain new and useful Improvements in Transmitting and Receiving Apparatus for I-Iertzian -Waves, of which the following is a specification.

In my various notes upon currents of great variations and high tension of Tesla, Thomson, and Oudin I have shown after practical experiments that it was possible to use these currents for the transmission of Hertzian Waves through space, that they increased the carrying power, that applied to aerial radiators and collectors (antennae) some of these devices permitted the regulation or bringing into agreement of the posts with one another, and that it Was very necessary, as shown by Thomson and Tesla in their notes, that the condensers of the discharge-circuit, the capacities, and self-induction circuits of the apparatus should be perfectly regulated with one another in order to obtain the greatest effect.

The device invented by me herein illustrated is of variable shapes and size and is applicable to the devices of Thomson and of Tesla. It constitutes an important improvement, the exclusive property of which will hereinafter be claimed.

In the accompanying drawings, Figure 1 shows an apparatus applied to a Thomson or Tesla apparatus. Fig. 2 shows this apparatus applied to a relay-receiver.

The essence of my invention lies in a transformer for induction-currents and especially adapted for use in connection with transmitting and receiving devices for Hertzian waves, wherein it has been found necessary to exactly regulate the discharge and induction circuits in relation to one another.

My transformer is adapted to enable the relations of the discharge-circuits and the inducing-circuit to be changed at will and as the needs demand. This device consists, essentially, of a solenoid, the number of whose efiective coils may be varied to give different effects upon the introduction of a current thereto and so regulate the discharge with relation to the inductive effects. The means for accomplishing this will be more fully described. Mounted uponthe solenoid S are graduated insulated supports 1 2 3 4:. These supports carry sliding contact-pieces R, R, R, and R, which may be placed in any position with relation to the coils of the solenoid that may be desired. In this manner the number of spirals of the solenoid acted upon by the inducing current, and hence the inductive effects, maybe varied at will. The solenoid may be thus regulated as to either self-inductionor as to inducing action, or the length between a a may be varied for these purposes by the addition of conductors or bridges and suppressing at will the effect of any number of the spirals of the solenoid S. As may be desired these ends a, a may be either connected to suitable sliding contacts of these currents or may be left free.

This apparatus permits numberless combinations which can be realized with three sliding contacts; but the four, Figs. 1, 2, give more elasticity to the adjustments. wound wire S (solenoid) for large sections may be made of several wires, as in the solenoid of La Rives condenser. The insulated supports 1 2 3 4 are graduated. They bring thecurrent to their respective sliding contacts.

This apparatus is reversible by means of suitable spring sliding contacts R. The number of spirals comprised at :r can be smaller or greater than these comprised at 2/ and vice versa. A self induction compensator by anadjustable condenser (liquid ones serve in all cases) may be added at a: and y, according to the uses to which this apparatus is applied.

Fig. 1 shows, by way of example, this apparatus applied to one of Thomsons or of Teslas devices, with a condenser 0, giving an oscillating discharge at O. The tensioncurrent is brought in at i if. The condenser 0, with any number of jars, is of my invention, the capacity thereof being regulated according to the desired effect. For wireless telegraphy the collector (antenna) is at O and the connection to earth at 0.

Fig. 2 shows this apparatus applied to a relay-receiver with radioconductor B It is also applicable to the Popoff-Ducretet radio- Thetelephonic receiver without relay. In this application the wire of the solenoid S is much finer than that in Fig. 1.

In both cases, Figs. 1 and 2, C represents the collector (antenna) either simple, multiple, or tubular. Its adjusting means are not shown. It is likewise with the connection to earth C Figs. 1 and 2. It can be made with or without a suitable capacity condenser.

Having fully described my invention, what I claim, and desire to secure by Letters Patent, is-

A device of the character described, comprising a solenoid for regulating the relation

US726413A 1901-11-01 1901-11-01 Transmitting and receiving for hertzian waves. Expired - Lifetime US726413A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US726413A US726413A (en) 1901-11-01 1901-11-01 Transmitting and receiving for hertzian waves.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US726413A US726413A (en) 1901-11-01 1901-11-01 Transmitting and receiving for hertzian waves.

Publications (1)

Publication Number Publication Date
US726413A true US726413A (en) 1903-04-28

Family

ID=2794923

Family Applications (1)

Application Number Title Priority Date Filing Date
US726413A Expired - Lifetime US726413A (en) 1901-11-01 1901-11-01 Transmitting and receiving for hertzian waves.

Country Status (1)

Country Link
US (1) US726413A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5650726A (en) * 1994-09-22 1997-07-22 Oyo Corporation Emitter for an electromagnetic tomography measurement system which connects a greater number of windings to a magnetic core at low frequencies than at high frequencies

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5650726A (en) * 1994-09-22 1997-07-22 Oyo Corporation Emitter for an electromagnetic tomography measurement system which connects a greater number of windings to a magnetic core at low frequencies than at high frequencies
US5859533A (en) * 1994-09-22 1999-01-12 Oyo Corporation Process for the production of a supply current of a solenoid for a measuring probe for electromagnetic tomography

Similar Documents

Publication Publication Date Title
US3396342A (en) Power supply circuit for continuous wave magnetron operated by pulsed direct current
US1762775A (en) Inductance device
US2666884A (en) Rectifier and converter using superconduction
US2470307A (en) High-frequency matching transformer
US5495259A (en) Compact parametric antenna
US787412A (en) Art of transmitting electrical energy through the natural mediums.
US593138A (en) Electrical Transformer
US2521513A (en) Stationary induction apparatus
US3315264A (en) Monopole antenna including electrical switching means for varying the length of the outer coaxial conductor with respect to the center conductor
US685012A (en) Means for increasing the intensity of electrical oscillations.
US2494716A (en) Method and apparatus for treating materials dielectrically
US1452849A (en) Wireless transmitting station
US4638272A (en) Lossy transmission line using spaced ferrite beads
US2527608A (en) Constant impedance network
US2114345A (en) Radio-frequency applicator with electroscopic control
US2175710A (en) Variable coupling arrangement
US2275030A (en) Turnstile antenna
US2394391A (en) Stable tuning device for high-frequency radio circuits
US2611094A (en) Inductance-capacitance resonance circuit
US2346621A (en) Alternating current supply system
US2735979A (en) Input
US2200263A (en) Variable reactor
US2471777A (en) Method of making ultra high frequency inductors
US2286428A (en) Arrangement for tuning parallel wire lines
US3154927A (en) Heat pumps