JPS5754421A - Oscillator - Google Patents

Oscillator

Info

Publication number
JPS5754421A
JPS5754421A JP55129498A JP12949880A JPS5754421A JP S5754421 A JPS5754421 A JP S5754421A JP 55129498 A JP55129498 A JP 55129498A JP 12949880 A JP12949880 A JP 12949880A JP S5754421 A JPS5754421 A JP S5754421A
Authority
JP
Japan
Prior art keywords
oscillator
temperature
clamp
emitter
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
JP55129498A
Other languages
Japanese (ja)
Inventor
Tatsuo Hayakawa
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP55129498A priority Critical patent/JPS5754421A/en
Publication of JPS5754421A publication Critical patent/JPS5754421A/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 make a titled oscillator stable against temperature and to avoid error in oscillating period, by using the coupling circuit of an emitter follower of both PNP and NPN transistors (TRs) as a clamp for a hysteresis comparator oscillator. CONSTITUTION:Expressing resistance values of resistors 19, 20 as R19, R20, a clamp voltage VINOT of an inverting input terminal IIN of a comparator 29 is shown in Equation I, where VBE21, VBE23 are base-to-emitter voltages of NPN TR21 and PNP TR23. The 1st terms of Equation I is independently of temperature and the temperature characteristics of the VBE in the 2nd and 3rd terms are canceled with each other. Thus, the voltage VINOT is very stable against temperature and a clamp type oscillator having stable temperature characteristics can be achieved. When a switch 18 is closed, since the base of the TR21 is lifted up to the power supply voltage, the potential of the emitter of the TR21 is pulled up, the TR23 which is clamped turns off and oscillation is started. In this case, the time error in the 1st period is not caused entirely.
JP55129498A 1980-09-18 1980-09-18 Oscillator Pending JPS5754421A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55129498A JPS5754421A (en) 1980-09-18 1980-09-18 Oscillator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55129498A JPS5754421A (en) 1980-09-18 1980-09-18 Oscillator

Publications (1)

Publication Number Publication Date
JPS5754421A true JPS5754421A (en) 1982-03-31

Family

ID=15010963

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55129498A Pending JPS5754421A (en) 1980-09-18 1980-09-18 Oscillator

Country Status (1)

Country Link
JP (1) JPS5754421A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015525059A (en) * 2012-08-13 2015-08-27 ノースロップ グラマン システムズ コーポレイションＮｏｒｔｈｒｏｐ Ｇｒｕｍｍａｎ Ｓｙｓｔｅｍｓ Ｃｏｒｐｏｒａｔｉｏｎ Power supply system and method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015525059A (en) * 2012-08-13 2015-08-27 ノースロップ グラマン システムズ コーポレイションＮｏｒｔｈｒｏｐ Ｇｒｕｍｍａｎ Ｓｙｓｔｅｍｓ Ｃｏｒｐｏｒａｔｉｏｎ Power supply system and method
US9413220B2 (en) 2012-08-13 2016-08-09 Northrop Grumman Systems Corporation Power supply systems and methods
US9653982B2 (en) 2012-08-13 2017-05-16 Northrop Grumman Systems Corporation Power supply systems and methods

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