JPS56112116A - Oscillation circuit - Google Patents

Oscillation circuit

Info

Publication number
JPS56112116A
JPS56112116A JP1570980A JP1570980A JPS56112116A JP S56112116 A JPS56112116 A JP S56112116A JP 1570980 A JP1570980 A JP 1570980A JP 1570980 A JP1570980 A JP 1570980A JP S56112116 A JPS56112116 A JP S56112116A
Authority
JP
Japan
Prior art keywords
capacitor
circuit
oscillation
switch circuit
resistance
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
JP1570980A
Other languages
Japanese (ja)
Inventor
Masao Harajiri
Toshikatsu Takimoto
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.)
Fujitsu General Ltd
Gen Co Ltd
Original Assignee
Fujitsu General Ltd
Gen 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 Fujitsu General Ltd, Gen Co Ltd filed Critical Fujitsu General Ltd
Priority to JP1570980A priority Critical patent/JPS56112116A/en
Publication of JPS56112116A publication Critical patent/JPS56112116A/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

Abstract

PURPOSE:To obtain different oscillation frequencies by directly changing the electric charging and discharging time of a resistance or a capacitor for deciding the repeated frequency, forcibly from the outside. CONSTITUTION:The switch circuit 5 consisting of the switching circuit, and series circuit consisting of the capacitor 6 are inserted in parallel with the capacitor 4 of the oscillation circuit 1. When the logical value ''0'' has been applied to the control terminal 7 of the switch circuit 5, if the switch circuit 5 is opened, in this case, the oscillation period of the oscillation circuit 1 is decided by the resistance 3 and the capacitor 4. When the logical value ''1'' has been applied to the control terminal 7, the capacitor 6 is connected in parallel to the capacitor 4 through the switch circuit 5, and the oscillation period is changed.
JP1570980A 1980-02-12 1980-02-12 Oscillation circuit Pending JPS56112116A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1570980A JPS56112116A (en) 1980-02-12 1980-02-12 Oscillation circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1570980A JPS56112116A (en) 1980-02-12 1980-02-12 Oscillation circuit

Related Child Applications (2)

Application Number Title Priority Date Filing Date
JP8887680A Division JPS56114465A (en) 1980-06-30 1980-06-30 Digital fsk modulating circuit
JP59205741A Division JPS60100819A (en) 1984-10-01 1984-10-01 Oscillating circuit

Publications (1)

Publication Number Publication Date
JPS56112116A true JPS56112116A (en) 1981-09-04

Family

ID=11896288

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1570980A Pending JPS56112116A (en) 1980-02-12 1980-02-12 Oscillation circuit

Country Status (1)

Country Link
JP (1) JPS56112116A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61253917A (en) * 1985-05-02 1986-11-11 Nippon Denso Co Ltd Semiconductor integrated circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61253917A (en) * 1985-05-02 1986-11-11 Nippon Denso Co Ltd Semiconductor integrated circuit

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