FR2215751B3 - - Google Patents

Info

Publication number
FR2215751B3
FR2215751B3 FR7402611A FR7402611A FR2215751B3 FR 2215751 B3 FR2215751 B3 FR 2215751B3 FR 7402611 A FR7402611 A FR 7402611A FR 7402611 A FR7402611 A FR 7402611A FR 2215751 B3 FR2215751 B3 FR 2215751B3
Authority
FR
France
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
FR7402611A
Other versions
FR2215751A1 (fr
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.)
Motorola Solutions Inc
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Publication of FR2215751A1 publication Critical patent/FR2215751A1/fr
Application granted granted Critical
Publication of FR2215751B3 publication Critical patent/FR2215751B3/fr
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
    • H03J7/18—Automatic scanning over a band of frequencies
    • H03J7/20—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element
    • H03J7/24—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element using varactors, i.e. voltage variable reactive diodes
    • H03J7/26—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element using varactors, i.e. voltage variable reactive diodes in which an automatic frequency control circuit is brought into action after the scanning action has been stopped
    • 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
    • H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
FR7402611A 1973-01-26 1974-01-25 Expired FR2215751B3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00326845A US3821650A (en) 1973-01-26 1973-01-26 Phase lock loop electronic tuning system

Publications (2)

Publication Number Publication Date
FR2215751A1 FR2215751A1 (fr) 1974-08-23
FR2215751B3 true FR2215751B3 (fr) 1976-11-19

Family

ID=23273959

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7402611A Expired FR2215751B3 (fr) 1973-01-26 1974-01-25

Country Status (5)

Country Link
US (1) US3821650A (fr)
JP (1) JPS49107135A (fr)
DE (1) DE2403367A1 (fr)
FR (1) FR2215751B3 (fr)
GB (1) GB1437544A (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7306381A (fr) * 1973-05-08 1974-11-12
IT1036497B (it) * 1975-07-11 1979-10-30 Indesit Circuito selezionatore di emittente in un ricevitore di segnali
CA1064580A (fr) * 1975-12-26 1979-10-16 Sony Corporation Circuit automatique d'accord precis
US4078212A (en) * 1976-02-27 1978-03-07 Rca Corporation Dual mode frequency synthesizer for a television tuning apparatus
JPS54100601A (en) * 1978-01-25 1979-08-08 Nippon Gakki Seizo Kk Automatic channel selector of receiver
JPS54111403U (fr) * 1978-01-24 1979-08-06
JPS5567248A (en) * 1978-11-15 1980-05-21 Sanyo Electric Co Ltd Frequency synthesizerrtype channel selection device
US4245351A (en) * 1979-07-30 1981-01-13 Rca Corporation AFT Arrangement for a phase locked loop tuning system
US4354277A (en) * 1979-11-23 1982-10-12 Trw Inc. Signal acquisition system
US4485404A (en) * 1982-09-01 1984-11-27 Rca Corporation Digital aft system which is activated during vertical retrace intervals
US4601060A (en) * 1984-10-24 1986-07-15 Rca Corporation Automatic digital fine tuning system
US4727591A (en) * 1986-09-04 1988-02-23 Arvin Industries, Inc. Microprocessor controlled tuning system
US9287770B1 (en) 2014-09-04 2016-03-15 Martin Kanner Analog timer circuit with time constant multiplication effect
US9631838B2 (en) 2015-02-04 2017-04-25 Martin Kanner Boiler control comprising analog up/down timer circuit for generating variable threshold signal

Also Published As

Publication number Publication date
DE2403367A1 (de) 1974-09-05
GB1437544A (en) 1976-05-26
US3821650A (en) 1974-06-28
FR2215751A1 (fr) 1974-08-23
JPS49107135A (fr) 1974-10-11

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Legal Events

Date Code Title Description
ST Notification of lapse