JPS568906A - Oscillator with change-over capacity - Google Patents

Oscillator with change-over capacity

Info

Publication number
JPS568906A
JPS568906A JP8417179A JP8417179A JPS568906A JP S568906 A JPS568906 A JP S568906A JP 8417179 A JP8417179 A JP 8417179A JP 8417179 A JP8417179 A JP 8417179A JP S568906 A JPS568906 A JP S568906A
Authority
JP
Japan
Prior art keywords
capacity
change
terminal
over
input
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
JP8417179A
Other languages
Japanese (ja)
Inventor
Heihachiro Ebihara
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.)
Citizen Watch Co Ltd
Original Assignee
Citizen Watch 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 Citizen Watch Co Ltd filed Critical Citizen Watch Co Ltd
Priority to JP8417179A priority Critical patent/JPS568906A/en
Publication of JPS568906A publication Critical patent/JPS568906A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/027—Generators characterised by the type of circuit or by the means used for producing pulses by the use of logic circuits, with internal or external positive feedback
    • H03K3/03—Astable circuits
    • H03K3/0307—Stabilisation of output, e.g. using crystal

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Oscillators With Electromechanical Resonators (AREA)

Abstract

PURPOSE:To obtain a stable oscillation state by eliminating the fluctuations of the bias of an oscillating amplifier when a switching element changing input capacity over is in switching operation by applying the change-over input capacity with a bias potential by providing a bias resistance. CONSTITUTION:Input terminal A of inverter 1 is grounded via fixed input capacity 2 and also connected to output terminal C via feedback resistance 3 and the connection point between output resistance 4 and output capacity 5 is connected to input terminal A via crystal vibrator 6. Further, input terminal A is connected to change- over input capacity 8 at point B via switching element 7 and control signal phi causes oscillation under two kind of conditions. Then, one terminal of bias resistance 10 is connected to connection point B between switching element 7 and the change-over capacity and the other is also connected to output terminal C to apply one terminal B of change-over input capacity 8 with an invariably correct bias voltage even when switching element 7 is placed in the open-circuit state.
JP8417179A 1979-07-04 1979-07-04 Oscillator with change-over capacity Pending JPS568906A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8417179A JPS568906A (en) 1979-07-04 1979-07-04 Oscillator with change-over capacity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8417179A JPS568906A (en) 1979-07-04 1979-07-04 Oscillator with change-over capacity

Publications (1)

Publication Number Publication Date
JPS568906A true JPS568906A (en) 1981-01-29

Family

ID=13823040

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8417179A Pending JPS568906A (en) 1979-07-04 1979-07-04 Oscillator with change-over capacity

Country Status (1)

Country Link
JP (1) JPS568906A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58219803A (en) * 1982-06-14 1983-12-21 Mitsubishi Electric Corp Oscillating circuit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5212446B2 (en) * 1973-12-10 1977-04-07
JPS53129570A (en) * 1977-04-19 1978-11-11 Casio Comput Co Ltd Crystal oscillator circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5212446B2 (en) * 1973-12-10 1977-04-07
JPS53129570A (en) * 1977-04-19 1978-11-11 Casio Comput Co Ltd Crystal oscillator circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58219803A (en) * 1982-06-14 1983-12-21 Mitsubishi Electric Corp Oscillating circuit
JPH0374041B2 (en) * 1982-06-14 1991-11-25

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