JPS5711504A - Oscillating circuit - Google Patents

Oscillating circuit

Info

Publication number
JPS5711504A
JPS5711504A JP8567080A JP8567080A JPS5711504A JP S5711504 A JPS5711504 A JP S5711504A JP 8567080 A JP8567080 A JP 8567080A JP 8567080 A JP8567080 A JP 8567080A JP S5711504 A JPS5711504 A JP S5711504A
Authority
JP
Japan
Prior art keywords
oscillating
circuit
frequency
switching
oscillating frequency
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
JP8567080A
Other languages
Japanese (ja)
Inventor
Masahiko Sato
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP8567080A priority Critical patent/JPS5711504A/en
Publication of JPS5711504A publication Critical patent/JPS5711504A/en
Pending 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
    • H03B5/30—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator
    • H03B5/32—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
    • H03B5/36—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being semiconductor device

Landscapes

  • Oscillators With Electromechanical Resonators (AREA)

Abstract

PURPOSE:To obtain the ciruit of low power consumption without spurious interference, by switching an oscillating frequency through the change of a bias voltage, through the use of an over-tone oscillator with a circuit converting a video signal of a VTR to a vacant channel of a TV receiver. CONSTITUTION:Transistors (TR) Qa, Qb are in parallel connection, an oscillating element Xa is connected to the base of the TRQa and an oscillating element Xb is connected to the base of the TRQb. A feedback capacitor Cf is connected to the emitter of the TRs Qa, Qb to constitute an over-tone oscillator. The element constants of the circuit are selected so that the 3rd harmonic of the oscillating frequency of the elements Xa, Xb can be the oscillating frequency of this oscillation circuit. In switching the oscillation frequency, a bias voltage is set so that the element Xa is oscillated when a switch SW is in the switching state (a) in Figure and the element Xb is oscillated in the state (b). The resonance frequency of an output tank circuit 10 is tuned twice the oscillating frequency of the oscillation circuit. A capacitor Cb is added to a connecting point lo of the switch SW to eliminate spurious interference.
JP8567080A 1980-06-24 1980-06-24 Oscillating circuit Pending JPS5711504A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8567080A JPS5711504A (en) 1980-06-24 1980-06-24 Oscillating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8567080A JPS5711504A (en) 1980-06-24 1980-06-24 Oscillating circuit

Publications (1)

Publication Number Publication Date
JPS5711504A true JPS5711504A (en) 1982-01-21

Family

ID=13865254

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8567080A Pending JPS5711504A (en) 1980-06-24 1980-06-24 Oscillating circuit

Country Status (1)

Country Link
JP (1) JPS5711504A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63144716U (en) * 1987-03-13 1988-09-22
JPH0344320U (en) * 1989-08-31 1991-04-24
JP2010028507A (en) * 2008-07-22 2010-02-04 Asahi Kasei Electronics Co Ltd Oscillator
JP2012195974A (en) * 2012-07-12 2012-10-11 Asahi Kasei Electronics Co Ltd Oscillator
JP2013211787A (en) * 2012-03-30 2013-10-10 Nippon Dempa Kogyo Co Ltd Oscillation device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63144716U (en) * 1987-03-13 1988-09-22
JPH0344320U (en) * 1989-08-31 1991-04-24
JP2010028507A (en) * 2008-07-22 2010-02-04 Asahi Kasei Electronics Co Ltd Oscillator
JP2013211787A (en) * 2012-03-30 2013-10-10 Nippon Dempa Kogyo Co Ltd Oscillation device
JP2012195974A (en) * 2012-07-12 2012-10-11 Asahi Kasei Electronics Co Ltd Oscillator

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