JPS54153261A - Electric source control circuit - Google Patents

Electric source control circuit

Info

Publication number
JPS54153261A
JPS54153261A JP6264978A JP6264978A JPS54153261A JP S54153261 A JPS54153261 A JP S54153261A JP 6264978 A JP6264978 A JP 6264978A JP 6264978 A JP6264978 A JP 6264978A JP S54153261 A JPS54153261 A JP S54153261A
Authority
JP
Japan
Prior art keywords
wave form
set
oscillating
pulse width
oscillator
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
JP6264978A
Other versions
JPS6412179B2 (en
Inventor
Kiyonobu Hayazaki
Kenjo Yamano
Original Assignee
Nec 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 Nec Corp filed Critical Nec Corp
Priority to JP6264978A priority Critical patent/JPS6412179B2/ja
Publication of JPS54153261A publication Critical patent/JPS54153261A/en
Publication of JPS6412179B2 publication Critical patent/JPS6412179B2/ja
Application status is Expired legal-status Critical

Links

Abstract

PURPOSE: To restrain the fluctuation in a light load for obtaining an electric source of high load variation characteristic and low ripple voltage by setting the oscillating wave form of a reference oscillator to reduce the changing rate of pulse width as the pulse width is lessened.
CONSTITUTION: A chopping wave oscillator is composed of elements 4W17 encircled by alternate long and short dash lines and provided with reference resistances 1 and 2 and an oscillating reference condenser 3 to set oscillating frequencies, voltage dividing resistances 18 and 19 to set voltages to change the slant of an oscillating wave form, and a voltage comparator 20 to compare outputs btween the oscillator and an error amplifier for forming a pulse width. In this construction, the slant-changing level of an oscillating wave form can be optionally set by divided voltages of resistances 18 and 19 in the range between the upper and the lower limit voltage of the wave form, and the slanting rate of the wave form can be set set optionally. Thus, the fluctuation of a main transistor in a low load can be reduced for obtaining a small-sized electric source of high characteristic.
COPYRIGHT: (C)1979,JPO&Japio
JP6264978A 1978-05-24 1978-05-24 Expired JPS6412179B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6264978A JPS6412179B2 (en) 1978-05-24 1978-05-24

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6264978A JPS6412179B2 (en) 1978-05-24 1978-05-24

Publications (2)

Publication Number Publication Date
JPS54153261A true JPS54153261A (en) 1979-12-03
JPS6412179B2 JPS6412179B2 (en) 1989-02-28

Family

ID=13206379

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6264978A Expired JPS6412179B2 (en) 1978-05-24 1978-05-24

Country Status (1)

Country Link
JP (1) JPS6412179B2 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5292321A (en) * 1976-01-29 1977-08-03 Sony Corp Power supply circuit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5292321A (en) * 1976-01-29 1977-08-03 Sony Corp Power supply circuit

Also Published As

Publication number Publication date
JPS6412179B2 (en) 1989-02-28

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