JPS57199319A - Frequency adjustment type sawtooth wave generator - Google Patents

Frequency adjustment type sawtooth wave generator

Info

Publication number
JPS57199319A
JPS57199319A JP56084333A JP8433381A JPS57199319A JP S57199319 A JPS57199319 A JP S57199319A JP 56084333 A JP56084333 A JP 56084333A JP 8433381 A JP8433381 A JP 8433381A JP S57199319 A JPS57199319 A JP S57199319A
Authority
JP
Japan
Prior art keywords
positive
sawtooth wave
output
integrator
wave generator
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
JP56084333A
Other languages
Japanese (ja)
Inventor
Masayuki Hirayama
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP56084333A priority Critical patent/JPS57199319A/en
Publication of JPS57199319A publication Critical patent/JPS57199319A/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
    • H03K4/48—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices
    • H03K4/50—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices in which a sawtooth voltage is produced across a capacitor
    • H03K4/56—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices in which a sawtooth voltage is produced across a capacitor using a semiconductor device with negative feedback through a capacitor, e.g. Miller integrator

Landscapes

  • Details Of Television Scanning (AREA)

Abstract

PURPOSE:To generate sawtooth waves of similar figure with different frequencies, by controlling the switching operation of a switching device changing over positive and negative input voltages inputted to a CR integrator. CONSTITUTION:Positive and negative input voltages are switched at a switching device 5 controlled with the output of an FF18 and applied to a CR integrator consisting of a high gain amplifier 8, an integrating capacitor 9, and an integrating resistor 7. The respective outputs of the CR integrator are compared at comparators 11 and 12 having positive and negative reference voltages, respecively, the FF18 is set with the output of the comparator 11 and reset with the output of the comparator 12. Thus, a sawtooth wave is outputted from an output terminal 20. In this case, the frequency of the sawtooth wave can be adjusted by adjusting a voltage adjuster 21 forming the positive and negative reference voltages. Thus, sawtooth waves of similar figure with different frequencies can be generated with a simple circuit.
JP56084333A 1981-06-03 1981-06-03 Frequency adjustment type sawtooth wave generator Pending JPS57199319A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56084333A JPS57199319A (en) 1981-06-03 1981-06-03 Frequency adjustment type sawtooth wave generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56084333A JPS57199319A (en) 1981-06-03 1981-06-03 Frequency adjustment type sawtooth wave generator

Publications (1)

Publication Number Publication Date
JPS57199319A true JPS57199319A (en) 1982-12-07

Family

ID=13827576

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56084333A Pending JPS57199319A (en) 1981-06-03 1981-06-03 Frequency adjustment type sawtooth wave generator

Country Status (1)

Country Link
JP (1) JPS57199319A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61118016A (en) * 1984-11-14 1986-06-05 Yamatake Honeywell Co Ltd Signal generating circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61118016A (en) * 1984-11-14 1986-06-05 Yamatake Honeywell Co Ltd Signal generating circuit

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