JPS5570121A - Frequency switching circuit - Google Patents

Frequency switching circuit

Info

Publication number
JPS5570121A
JPS5570121A JP14438178A JP14438178A JPS5570121A JP S5570121 A JPS5570121 A JP S5570121A JP 14438178 A JP14438178 A JP 14438178A JP 14438178 A JP14438178 A JP 14438178A JP S5570121 A JPS5570121 A JP S5570121A
Authority
JP
Japan
Prior art keywords
pulse signal
frequency
featuring
gate
constitution
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
JP14438178A
Other languages
Japanese (ja)
Inventor
Kazuyoshi Tsukamoto
Makoto Yamada
Hiroshi Kutsuyama
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric 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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP14438178A priority Critical patent/JPS5570121A/en
Publication of JPS5570121A publication Critical patent/JPS5570121A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H15/00—Transversal filters

Landscapes

  • Electronic Switches (AREA)

Abstract

PURPOSE:To obtain easily various types of frequency switching circuits through the simple digital circuit constitution by fetching the switching output of cut-off frequency f0 by means of the change/discharge circuit which is controlled by the gate circuit. CONSTITUTION:Monostable multivibrator 1 synchronizes with the input pulse signal of duty D and then generates the 1st pulse signal featuring pulse duration T1 identical to the pulse duration of the pulse signal of duty D featuring the same repetitive frequency as cut-off frequency f0. While monostable multivibrator 2 generates the 2nd pulse signal featuring pulse duration T2 of T1>T2 in response to the rear edge of the 1st pulse signal and then supplies the input pulse signal and the 2nd pulse signal through AND gate 3. Using charge/discharge circuit 4 controlled by the output of gate 3, the switching output of the frequency f0 is fetched. In such way, various types of frequency switching circuits can be obtained easily through the simple digital circuit constitution.
JP14438178A 1978-11-20 1978-11-20 Frequency switching circuit Pending JPS5570121A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14438178A JPS5570121A (en) 1978-11-20 1978-11-20 Frequency switching circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14438178A JPS5570121A (en) 1978-11-20 1978-11-20 Frequency switching circuit

Publications (1)

Publication Number Publication Date
JPS5570121A true JPS5570121A (en) 1980-05-27

Family

ID=15360797

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14438178A Pending JPS5570121A (en) 1978-11-20 1978-11-20 Frequency switching circuit

Country Status (1)

Country Link
JP (1) JPS5570121A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5288375A (en) * 1976-01-19 1977-07-23 Canon Inc Frequency identifying apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5288375A (en) * 1976-01-19 1977-07-23 Canon Inc Frequency identifying apparatus

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