JPS5547731A - Oscillation circuit - Google Patents

Oscillation circuit

Info

Publication number
JPS5547731A
JPS5547731A JP12073978A JP12073978A JPS5547731A JP S5547731 A JPS5547731 A JP S5547731A JP 12073978 A JP12073978 A JP 12073978A JP 12073978 A JP12073978 A JP 12073978A JP S5547731 A JPS5547731 A JP S5547731A
Authority
JP
Japan
Prior art keywords
capacitor
switch
charging
input voltage
voltage
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
JP12073978A
Other languages
Japanese (ja)
Inventor
Minoru Yuda
Hisashi Katafuchi
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP12073978A priority Critical patent/JPS5547731A/en
Publication of JPS5547731A publication Critical patent/JPS5547731A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K4/00—Generating pulses having essentially a finite slope or stepped portions
    • H03K4/06—Generating pulses having essentially a finite slope or stepped portions having triangular shape
    • H03K4/08—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape

Abstract

PURPOSE:To decrease on capacitor and the number of pins at circuit integration, by commonly using the vertical oscillation circuit and the saw tooth wave generation circuit. CONSTITUTION:At the scanning period, the capacitor C is discharged at a given current through the first constant current circuit consisting of transistor Q12. when the input voltage at (-) of the comparator 11 is equal to the low level voltage of the input voltage at (+), the first switch S11 and second switch S12 are operated to start the charge of capacitor C and to bring the input voltage at (+) to high level VH. When the charging voltage of capacitor C is equal to VH, the output of com- parator 11 operates the first switch S11 to stop the charge of the capacitor C and to restart charging. Accordingly, since the charging of capacitor C is stopped and it is discharged with the first constant current, linear saw tooth wave can be obtained.
JP12073978A 1978-09-30 1978-09-30 Oscillation circuit Pending JPS5547731A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12073978A JPS5547731A (en) 1978-09-30 1978-09-30 Oscillation circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12073978A JPS5547731A (en) 1978-09-30 1978-09-30 Oscillation circuit

Publications (1)

Publication Number Publication Date
JPS5547731A true JPS5547731A (en) 1980-04-04

Family

ID=14793780

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12073978A Pending JPS5547731A (en) 1978-09-30 1978-09-30 Oscillation circuit

Country Status (1)

Country Link
JP (1) JPS5547731A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59180533A (en) * 1983-03-31 1984-10-13 Suraidetsukusu Kk Cooling device of overhead type slide projector
JPS6030634U (en) * 1983-08-04 1985-03-01 三洋電機株式会社 RC oscillation circuit
JPS62124538A (en) * 1985-11-26 1987-06-05 Suraidetsukusu Kk Holding frame for information recording carrier
JPH01179516A (en) * 1988-01-09 1989-07-17 Rohm Co Ltd Monostable multivibrator

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59180533A (en) * 1983-03-31 1984-10-13 Suraidetsukusu Kk Cooling device of overhead type slide projector
US4563067A (en) * 1983-03-31 1986-01-07 Slidex Corporation Cooling device for overhead type slide projectors
JPS6030634U (en) * 1983-08-04 1985-03-01 三洋電機株式会社 RC oscillation circuit
JPS62124538A (en) * 1985-11-26 1987-06-05 Suraidetsukusu Kk Holding frame for information recording carrier
JPH01179516A (en) * 1988-01-09 1989-07-17 Rohm Co Ltd Monostable multivibrator

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