JPS56107625A - Automatic frequency set device of receiver or the like - Google Patents

Automatic frequency set device of receiver or the like

Info

Publication number
JPS56107625A
JPS56107625A JP944580A JP944580A JPS56107625A JP S56107625 A JPS56107625 A JP S56107625A JP 944580 A JP944580 A JP 944580A JP 944580 A JP944580 A JP 944580A JP S56107625 A JPS56107625 A JP S56107625A
Authority
JP
Japan
Prior art keywords
output
frequency
amplifier
comparator
oscillator
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.)
Pending
Application number
JP944580A
Other languages
Japanese (ja)
Inventor
Mikio Ozawa
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.)
Taiyo Musen Co Ltd
Original Assignee
Taiyo Musen Co Ltd
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 Taiyo Musen Co Ltd filed Critical Taiyo Musen Co Ltd
Priority to JP944580A priority Critical patent/JPS56107625A/en
Publication of JPS56107625A publication Critical patent/JPS56107625A/en
Pending 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
    • H03J7/04—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
    • H03J7/06—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 using counters or frequency dividers

Abstract

PURPOSE:To set the output frequency in the local oscillator or the high-frequency amplifier, etc. of the receiver, to a desired value by means of a simple operation, and also accurately, without requiring a quartz local oscillator or a complicated filter. CONSTITUTION:The output of the high-frequency tuning amplifier 2 connected to the receiving antenna 1 is provided to the mixer 4 together with the output of the variable frequency local oscillator 3, and its output is provided to the detector (not shown in figure) through the intermediate frequency amplifier 5. The output of this oscillator 3 is provided to the counter 6, and also this counter 6 is reset by the output of the clock pulse generator 7. Also, a local oscillation frequency signal corresponding to the receiving set frequency 10 is sent out, this signal and the output of the latch circuit 8 are provided to the comparator 11, and the DC motor 13 is driven by this comparator 11. When the output of the latch circuit 8 is different from that of the set device 10, the motor 13 continues its rotation until the output of the comparator 11 annihilates, and the output frequency control elements of the amplifier 2, the oscillator 3, etc. are adjusted.
JP944580A 1980-01-31 1980-01-31 Automatic frequency set device of receiver or the like Pending JPS56107625A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP944580A JPS56107625A (en) 1980-01-31 1980-01-31 Automatic frequency set device of receiver or the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP944580A JPS56107625A (en) 1980-01-31 1980-01-31 Automatic frequency set device of receiver or the like

Publications (1)

Publication Number Publication Date
JPS56107625A true JPS56107625A (en) 1981-08-26

Family

ID=11720484

Family Applications (1)

Application Number Title Priority Date Filing Date
JP944580A Pending JPS56107625A (en) 1980-01-31 1980-01-31 Automatic frequency set device of receiver or the like

Country Status (1)

Country Link
JP (1) JPS56107625A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5230301A (en) * 1975-09-03 1977-03-08 Matsushita Electric Ind Co Ltd Preset type electronic tuner
JPS5342501A (en) * 1976-09-30 1978-04-18 Pioneer Communications Kk Receiver channel selector

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5230301A (en) * 1975-09-03 1977-03-08 Matsushita Electric Ind Co Ltd Preset type electronic tuner
JPS5342501A (en) * 1976-09-30 1978-04-18 Pioneer Communications Kk Receiver channel selector

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