JPS57123721A - Oscillator - Google Patents

Oscillator

Info

Publication number
JPS57123721A
JPS57123721A JP56202239A JP20223981A JPS57123721A JP S57123721 A JPS57123721 A JP S57123721A JP 56202239 A JP56202239 A JP 56202239A JP 20223981 A JP20223981 A JP 20223981A JP S57123721 A JPS57123721 A JP S57123721A
Authority
JP
Japan
Prior art keywords
circuit
discharging
turned
switching
charging
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
JP56202239A
Other languages
Japanese (ja)
Inventor
Yuichi Shiotani
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 JP56202239A priority Critical patent/JPS57123721A/en
Publication of JPS57123721A publication Critical patent/JPS57123721A/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
    • H03K3/023—Generators characterised by the type of circuit or by the means used for producing pulses by the use of differential amplifiers or comparators, with internal or external positive feedback
    • H03K3/0231—Astable circuits

Abstract

PURPOSE:To vary an oscillation period over wide range by connecting a switching transistor (TR) to a charging circuit and a discharging circuit for a capacitor, respectively, and by bringing its conduction under the switching control of a switching circuit. CONSTITUTION:A switching SWTR3b, connected to the charge path of a capacitor (C)2, is brought under the SW control of a switching circuit 7 through TRs 3c and 3d. For charging, the TR3b is turned on and the SWTR4b connected to a discharging circuit 4 is turned off. For discharging, the TR3b is turned off, and the TR4b is turned on, thus perventing influences upon the other circuits mutually during the charging and discharging. Therefore, the maximum voltage of the C2 and the minimum voltage during the discharging are set optionally and independently and the high and low levels of a bias voltage applied from a bias voltage circuit 5 to the base of the TR1b of a differential amplifier 1 are set high and low optionally thereby widening the adjustment range of an oscillation period.
JP56202239A 1981-12-14 1981-12-14 Oscillator Pending JPS57123721A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56202239A JPS57123721A (en) 1981-12-14 1981-12-14 Oscillator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56202239A JPS57123721A (en) 1981-12-14 1981-12-14 Oscillator

Publications (1)

Publication Number Publication Date
JPS57123721A true JPS57123721A (en) 1982-08-02

Family

ID=16454253

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56202239A Pending JPS57123721A (en) 1981-12-14 1981-12-14 Oscillator

Country Status (1)

Country Link
JP (1) JPS57123721A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5991722A (en) * 1982-11-18 1984-05-26 Sony Corp Oscillator

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52127144A (en) * 1976-04-19 1977-10-25 Matsushita Electric Ind Co Ltd Free-running oscillator

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52127144A (en) * 1976-04-19 1977-10-25 Matsushita Electric Ind Co Ltd Free-running oscillator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5991722A (en) * 1982-11-18 1984-05-26 Sony Corp Oscillator

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