GB1512292A - Apparatus and method for setting the tuning of a resonant circuit - Google Patents

Apparatus and method for setting the tuning of a resonant circuit

Info

Publication number
GB1512292A
GB1512292A GB4337775A GB4337775A GB1512292A GB 1512292 A GB1512292 A GB 1512292A GB 4337775 A GB4337775 A GB 4337775A GB 4337775 A GB4337775 A GB 4337775A GB 1512292 A GB1512292 A GB 1512292A
Authority
GB
United Kingdom
Prior art keywords
tuning
signal
resonant circuit
source
detectors
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
GB4337775A
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.)
Indesit Industria Elettrodomestici Italiana SpA
Original Assignee
Indesit Industria Elettrodomestici Italiana SpA
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 Indesit Industria Elettrodomestici Italiana SpA filed Critical Indesit Industria Elettrodomestici Italiana SpA
Publication of GB1512292A publication Critical patent/GB1512292A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/02—Automatic frequency control
    • H03J7/16—Automatic frequency control where the frequency control is accomplished by mechanical means, e.g. by a motor
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/26—Demodulation of angle-, frequency- or phase- modulated oscillations by means of sloping amplitude/frequency characteristic of tuned or reactive circuit

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Filters And Equalizers (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

1512292 Automatic tuning INDESIT INDUSTRIA ELETTRODOMESTICI ITALIANA SpA 22 Oct 1975 [25 Oct 1974] 43377/75 Heading H3A Apparatus for tuning a resonant circuit 1 to a predetermined frequency comprises means 2, 3 for feeding the resonant circuit with signals having frequencies evenly spaced either side of the predetermined frequency, to produce an output corresponding to each signal, and means 6 for comparing the amplitudes of the two outputs to provide a control signal for adjusting the tuning of the circuit 1. In the arrangement shown in Fig. 2 synchronized switches 8. 9 fed the signal from source 2 to detector 10 or the signal from source 3 to detector 11, the outputs from the detectors being fed to difference amplifier 6. In an alternative embodiment Fig. 1 (not shown) the switches are omitted and the two detectors (4, 5) include filters tuned to pass the respective signal from source 2 or 3.
GB4337775A 1974-10-25 1975-10-22 Apparatus and method for setting the tuning of a resonant circuit Expired GB1512292A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT7017274A IT1024688B (en) 1974-10-25 1974-10-25 ARRANGEMENT FOR CALIBRATING A RESONANT CIRCUIT

Publications (1)

Publication Number Publication Date
GB1512292A true GB1512292A (en) 1978-06-01

Family

ID=11313569

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4337775A Expired GB1512292A (en) 1974-10-25 1975-10-22 Apparatus and method for setting the tuning of a resonant circuit

Country Status (5)

Country Link
DE (1) DE2547694A1 (en)
FR (1) FR2290088A1 (en)
GB (1) GB1512292A (en)
IT (1) IT1024688B (en)
NL (1) NL7512439A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4255758A (en) * 1979-04-05 1981-03-10 Rca Corporation Self-adjusting bell filter circuit for use in SECAM coders

Also Published As

Publication number Publication date
IT1024688B (en) 1978-07-20
DE2547694A1 (en) 1976-04-29
NL7512439A (en) 1976-04-27
FR2290088B1 (en) 1981-09-25
FR2290088A1 (en) 1976-05-28

Similar Documents

Publication Publication Date Title
DE69013341D1 (en) TV SIGNAL MONITORING DEVICE.
GB1190459A (en) A Circuit Arrangement for Automatically Tuning a Communication Apparatus.
GB1512292A (en) Apparatus and method for setting the tuning of a resonant circuit
GB1193318A (en) A Color Television Receiver
JPS4947052A (en)
GB1430142A (en) Automatic frequency control loop apparatus
US3955142A (en) Single-sideband radiotelephone system
GB1309339A (en) Television receiver
FR2330198A1 (en) Freely oscillating tunable oscillator - has frequency divider for oscillator output signal, and several detectors
GB1090885A (en) Multifrequency signal receiver circuit
JPS5575379A (en) Multiple signal demodulator
GB1143968A (en) Apparatus for comparing the frequencies of two signals
GB1236510A (en) Improvements in or relating to signal receiving systems
SU483797A1 (en) Device for receiving multi-program broadcasting
JPS5673369A (en) Phase comparison system of decca receiving device
GB1086230A (en) Frequency detection system
JPS566542A (en) Muting system for fm radio receiver
JPS5547740A (en) Fm receiver
SU694819A1 (en) Apparatus for measuring superhigh frequency power
JPS57190413A (en) Receiver
FR2232166A1 (en) Signal processing cct. - uses signals which are delivered by chrominance band-pass amplifier in T.V. receiver
FR2249504A1 (en) Community antenna system - supplies a large number of receivers with broadcast and TV programs
JPS5432901A (en) Test system of synchronizing broadcasting
GB1094348A (en) Circuit arrangement for producing a retuning voltage
GB1117924A (en) Automatic adjusting system of tuned amplifier

Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee