JPS562710A - Oscillating unit - Google Patents

Oscillating unit

Info

Publication number
JPS562710A
JPS562710A JP7873979A JP7873979A JPS562710A JP S562710 A JPS562710 A JP S562710A JP 7873979 A JP7873979 A JP 7873979A JP 7873979 A JP7873979 A JP 7873979A JP S562710 A JPS562710 A JP S562710A
Authority
JP
Japan
Prior art keywords
switch
control
oscillation
circuit
feedback loop
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.)
Granted
Application number
JP7873979A
Other languages
Japanese (ja)
Other versions
JPS6326562B2 (en
Inventor
Akio Hashima
Terumoto Akatsuka
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP7873979A priority Critical patent/JPS562710A/en
Publication of JPS562710A publication Critical patent/JPS562710A/en
Publication of JPS6326562B2 publication Critical patent/JPS6326562B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/02—Details

Landscapes

  • Oscillators With Electromechanical Resonators (AREA)

Abstract

PURPOSE:To make it possible to install a selector switch for oscillation control outside the positive feedback loop, by inserting a control circuit to the positive feedback loop consisting of an amplifier and a frequency selective feedback circuit. CONSTITUTION:Amplifier 1 and frequency selective feedback circuit F form a feedback loop together with a part of control circuit C. Control circuit C uses transistor TR4 for the signal path, and the base and the emitter are used as the input terminal and the output terminal respectively. The collector of controlling TR5 is connected to the emitter of TR4, and the control signal is given to the base of TR5. When the control signal is selected by switch T and the voltage of DC power source 3 is given, the oscillation state is set; and meanwhile, when the control terminal is grounded by switch T, oscillation is stopped. Thus, the control terminal and switch T can be provided outside the loop. Consequently, the positional restrictions of switch T and the consideration of a high frequency can be eliminated.
JP7873979A 1979-06-21 1979-06-21 Oscillating unit Granted JPS562710A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7873979A JPS562710A (en) 1979-06-21 1979-06-21 Oscillating unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7873979A JPS562710A (en) 1979-06-21 1979-06-21 Oscillating unit

Publications (2)

Publication Number Publication Date
JPS562710A true JPS562710A (en) 1981-01-13
JPS6326562B2 JPS6326562B2 (en) 1988-05-30

Family

ID=13670249

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7873979A Granted JPS562710A (en) 1979-06-21 1979-06-21 Oscillating unit

Country Status (1)

Country Link
JP (1) JPS562710A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6077113U (en) * 1983-10-31 1985-05-29 株式会社ケンウッド oscillation circuit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4892855U (en) * 1972-02-09 1973-11-07
JPS516835U (en) * 1974-07-01 1976-01-19

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4892855U (en) * 1972-02-09 1973-11-07
JPS516835U (en) * 1974-07-01 1976-01-19

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6077113U (en) * 1983-10-31 1985-05-29 株式会社ケンウッド oscillation circuit

Also Published As

Publication number Publication date
JPS6326562B2 (en) 1988-05-30

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