GB663976A - Modulation of electric oscillations employing the phenomena of super-conductivity - Google Patents

Modulation of electric oscillations employing the phenomena of super-conductivity

Info

Publication number
GB663976A
GB663976A GB17339/49A GB1733949A GB663976A GB 663976 A GB663976 A GB 663976A GB 17339/49 A GB17339/49 A GB 17339/49A GB 1733949 A GB1733949 A GB 1733949A GB 663976 A GB663976 A GB 663976A
Authority
GB
United Kingdom
Prior art keywords
conductor
circuit
condenser
coil
vary
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
Application number
GB17339/49A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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
Application filed by Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of GB663976A publication Critical patent/GB663976A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C5/00—Amplitude modulation and angle modulation produced simultaneously or at will by the same modulating signal
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C5/00—Amplitude modulation and angle modulation produced simultaneously or at will by the same modulating signal
    • H03C5/02—Amplitude modulation and angle modulation produced simultaneously or at will by the same modulating signal by means of transit-time tube
    • H03C5/04—Amplitude modulation and angle modulation produced simultaneously or at will by the same modulating signal by means of transit-time tube the tube being a magnetron

Landscapes

  • Control Of High-Frequency Heating Circuits (AREA)

Abstract

663,976. Modulating apparatus; pulsing carrier frequencies. TELEFONAKTIEBOLAGET L. M. ERICSSON. June 30, 1949 [July 9, 1948], No. 17339/49. Class 40 (v). Modulation or interruption of electric oscillations is effected by a conductor exhibiting the phenomena of super-conductivity, by connecting the conductor in the circuit of the oscillation generator or amplifier and employing the signal to vary the magnetic field in which the conductor is immersed, so as to vary the conductor resistance. As shown in Fig. 1, the tuned anode circuit L<SP>3</SP>, C<SP>3</SP> of an oscillation amplifier T<SP>1</SP> is partially shunted by the conductor S, and the signal is applied at terminals 1, 2 to vary the current in a coil L<SP>6</SP> surrounding the conductor. In Fig. 2, pulses from PG are applied to a coil L<SP>6</SP> surrounding the conductor S which is connected in a circuit including a coil L<SP>10</SP>, a condenser C<SP>11</SP> and a magnetron oscillator T2. The condenser is charged through resistors R<SP>1</SP>, R2 from a D.C. source Ua, and discharges through the shaping-coil L<SP>10</SP>, the conductor S, and the magnetron, causing pulses of oscillations to be supplied to the output lead K. A transformer or other matching network can be interposed between the conductor S and the condenser circuit, Fig. 3 (not shown). In a further modification, Fig. 4, the condenser is omitted, and the circuit of the conductor S is coupled to the supply circuit of the magnetron T2 by a transformer Tr. Specification 666,883 is referred to.
GB17339/49A 1948-07-09 1949-06-30 Modulation of electric oscillations employing the phenomena of super-conductivity Expired GB663976A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE663976X 1948-07-09

Publications (1)

Publication Number Publication Date
GB663976A true GB663976A (en) 1951-01-02

Family

ID=20314422

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17339/49A Expired GB663976A (en) 1948-07-09 1949-06-30 Modulation of electric oscillations employing the phenomena of super-conductivity

Country Status (1)

Country Link
GB (1) GB663976A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1179610B (en) * 1957-09-30 1964-10-15 Ibm Deutschland Arrangement for the amplitude modulation of alternating current signals

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1179610B (en) * 1957-09-30 1964-10-15 Ibm Deutschland Arrangement for the amplitude modulation of alternating current signals

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