GB433427A - Improvements in or relating to radio or like receivers and transmitters - Google Patents

Improvements in or relating to radio or like receivers and transmitters

Info

Publication number
GB433427A
GB433427A GB3883/35A GB388335A GB433427A GB 433427 A GB433427 A GB 433427A GB 3883/35 A GB3883/35 A GB 3883/35A GB 388335 A GB388335 A GB 388335A GB 433427 A GB433427 A GB 433427A
Authority
GB
United Kingdom
Prior art keywords
circuit
anode
valve
magnetron
supply
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
GB3883/35A
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.)
Thales SA
Original Assignee
CSF Compagnie Generale de Telegraphie sans Fil SA
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 CSF Compagnie Generale de Telegraphie sans Fil SA filed Critical CSF Compagnie Generale de Telegraphie sans Fil SA
Publication of GB433427A publication Critical patent/GB433427A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D11/00—Super-regenerative demodulator circuits
    • H03D11/02—Super-regenerative demodulator circuits for amplitude-modulated oscillations
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B9/00—Generation of oscillations using transit-time effects
    • H03B9/01—Generation of oscillations using transit-time effects using discharge tubes
    • H03B9/10—Generation of oscillations using transit-time effects using discharge tubes using a magnetron
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D1/00—Demodulation of amplitude-modulated oscillations
    • H03D1/26—Demodulation of amplitude-modulated oscillations by means of transit-time tubes

Abstract

433,427. Valve circuits for wireless reception; valve generating and modulating circuits. COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL, 79, Boulevard Haussmann, Paris. Feb. 6, 1935, No. 3883. Convention date, Feb. 6, 1934. [Class 40 (v)] A short-wave oscillator comprises a magnetron with its oscillatory circuit coupled to the receiving aerial, and with an auxiliary self-modulating circuit whereby the oscillator may be employed for modulated transmission or for super-regenerative reception. The receiving circuit shown in the Figure comprises a tuned circuit 2 coupled to the aerial 4 and connected between the anodes of a split-anode magnetron 1, the mid-point of the circuit 2 being connected to the anode supply source through a transformer primary coil 7, the secondary of which is connected to phones 12. The anode supply voltage, the cathode supply 10, and the magnetic field supply 11 are so adjusted that the valve operates at or near a bend of the anode-current anode-voltage curve, preferably at the lower bend. The valve is adjusted to oscillate, and a quenching frequency is supplied to its anode circuit, this quenching frequency being generated by the magnetron circuit by virtue of a series resistance 16 in its plate circuit, and a shunt condenser 15. For telegraphic transmission, the circuit 15, 16 produces a tone frequency, which may be varied for signalling by varying the resistance 16.
GB3883/35A 1934-02-06 1935-02-06 Improvements in or relating to radio or like receivers and transmitters Expired GB433427A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR718059X 1934-02-06

Publications (1)

Publication Number Publication Date
GB433427A true GB433427A (en) 1935-08-14

Family

ID=9090391

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3883/35A Expired GB433427A (en) 1934-02-06 1935-02-06 Improvements in or relating to radio or like receivers and transmitters

Country Status (3)

Country Link
DE (1) DE718059C (en)
FR (1) FR781415A (en)
GB (1) GB433427A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE754631C (en) * 1936-04-18 1952-12-15 Lorenz C Ag Ultra-short wave reception method with a magnetic field tube

Also Published As

Publication number Publication date
FR781415A (en) 1935-05-15
DE718059C (en) 1942-03-02

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