JPS56126314A - Oscillating circuit - Google Patents

Oscillating circuit

Info

Publication number
JPS56126314A
JPS56126314A JP2921680A JP2921680A JPS56126314A JP S56126314 A JPS56126314 A JP S56126314A JP 2921680 A JP2921680 A JP 2921680A JP 2921680 A JP2921680 A JP 2921680A JP S56126314 A JPS56126314 A JP S56126314A
Authority
JP
Japan
Prior art keywords
capacitor
voltage
current source
charging
current
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
JP2921680A
Other languages
Japanese (ja)
Inventor
Akio Tokuge
Yoshiro Kunugi
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.)
Pioneer Corp
Original Assignee
Pioneer Electronic Corp
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 Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Priority to JP2921680A priority Critical patent/JPS56126314A/en
Priority to US06/240,686 priority patent/US4418323A/en
Priority to GB8106960A priority patent/GB2072446B/en
Priority to DE3108613A priority patent/DE3108613C2/en
Publication of JPS56126314A publication Critical patent/JPS56126314A/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

Abstract

PURPOSE:To produce a rectangular wave signal having a high frequency, by carrying out a charge/discharge switching of a capacitor through a circuit constitution that actuates a transistor at the nonsaturated region and thus setting the minor carrier accumulating time at zero. CONSTITUTION:The transistors (TR) Q10 and Q11 plus a constant current source I1 constitute a differential amplifier with a hysteresis caused to the reverse and reset action. In case when the TRQ10 conducts with the TRQ11 cut off, the reverse threshold voltage VE1 is high with a cut-off given to the TRs Q12 and Q14, respectively. Accordingly the current i2 of the current source I2 flows to the capacitor C1 to continue a charging. When the voltage VC of the capacitor C1 exceeds the voltage VE1, the differential amplifying circuit is inverted. Thus the reverse threshold voltage VE2 is set at a low level , and the TRs Q11 and Q12 conduct to start the flowing of the current i1 of the constant current source I1. Thus the TRQ14 also conducts to absorb the current i2 from the TRQ13 and the capacitor C1. When the capacitor C1 discharges to set the voltage VC at VE2, the differential amplifying circuit is inverted again to be put under a charging state. In such way, the charging and discharging are repeated in a high speed to deliver both the triangular and rectangular waves having a high frequency each to the terminals A and B.
JP2921680A 1980-03-07 1980-03-10 Oscillating circuit Pending JPS56126314A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2921680A JPS56126314A (en) 1980-03-10 1980-03-10 Oscillating circuit
US06/240,686 US4418323A (en) 1980-03-07 1981-03-05 Oscillator having capacitor charged and discharged by current mirror circuits
GB8106960A GB2072446B (en) 1980-03-07 1981-03-05 Oscillator circuit
DE3108613A DE3108613C2 (en) 1980-03-07 1981-03-06 Pulse generator with a differential amplifier fed by a constant current source

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2921680A JPS56126314A (en) 1980-03-10 1980-03-10 Oscillating circuit

Publications (1)

Publication Number Publication Date
JPS56126314A true JPS56126314A (en) 1981-10-03

Family

ID=12269994

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2921680A Pending JPS56126314A (en) 1980-03-07 1980-03-10 Oscillating circuit

Country Status (1)

Country Link
JP (1) JPS56126314A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4913096A (en) * 1972-05-17 1974-02-05
JPS4976452A (en) * 1972-11-25 1974-07-23

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4913096A (en) * 1972-05-17 1974-02-05
JPS4976452A (en) * 1972-11-25 1974-07-23

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