JPS55122476A - Dc-dc converter - Google Patents

Dc-dc converter

Info

Publication number
JPS55122476A
JPS55122476A JP2961379A JP2961379A JPS55122476A JP S55122476 A JPS55122476 A JP S55122476A JP 2961379 A JP2961379 A JP 2961379A JP 2961379 A JP2961379 A JP 2961379A JP S55122476 A JPS55122476 A JP S55122476A
Authority
JP
Japan
Prior art keywords
voltage
wave
power
supply voltage
variation
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
JP2961379A
Other languages
Japanese (ja)
Inventor
Masanobu Kawamura
Hideyuki Ishino
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.)
Micron Kiki Co Ltd
Original Assignee
Micron Kiki 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 Micron Kiki Co Ltd filed Critical Micron Kiki Co Ltd
Priority to JP2961379A priority Critical patent/JPS55122476A/en
Publication of JPS55122476A publication Critical patent/JPS55122476A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33538—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only of the forward type
    • H02M3/33546—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only of the forward type with automatic control of the output voltage or current

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

PURPOSE:To obtain constantly high efficiency all the time against large voltage variation, by supplying a detected power-supply voltage and the output of a sawtooth-wave circuit to a comparator and obtaining a rectangular-wave-pulse voltage whose width corresponds to the variation of a power-supply voltage. CONSTITUTION:A constant voltage circuit is formed by a Zener diode ZD13, transistors Q14 and Q15, and a stable voltage is applied to an oscillator OSC, a comparator CON, and a driver DR. The output of the oscillator OSC is transformed into a sawtooth wave and is inputted to the comparator CON, where it is compared with the DC voltage divided by dividing resistors R11 and R12. The rectangular- wave output, whose width is varied corresponding to the power-supply voltage, sewitches a transistor Q11 through the driver DR. Therefore, the efficiency is not decreased against the variation of the power-supply voltage, and both 24V and 48V can be commonly used in one device.
JP2961379A 1979-03-14 1979-03-14 Dc-dc converter Pending JPS55122476A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2961379A JPS55122476A (en) 1979-03-14 1979-03-14 Dc-dc converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2961379A JPS55122476A (en) 1979-03-14 1979-03-14 Dc-dc converter

Publications (1)

Publication Number Publication Date
JPS55122476A true JPS55122476A (en) 1980-09-20

Family

ID=12280914

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2961379A Pending JPS55122476A (en) 1979-03-14 1979-03-14 Dc-dc converter

Country Status (1)

Country Link
JP (1) JPS55122476A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57120132A (en) * 1981-01-16 1982-07-27 Nec Corp Switching power supply circuit
US4570211A (en) * 1982-04-30 1986-02-11 Tokyo Electric Co. Ltd. Power supply circuit for driving a motor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49121149A (en) * 1973-03-28 1974-11-19

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49121149A (en) * 1973-03-28 1974-11-19

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57120132A (en) * 1981-01-16 1982-07-27 Nec Corp Switching power supply circuit
US4570211A (en) * 1982-04-30 1986-02-11 Tokyo Electric Co. Ltd. Power supply circuit for driving a motor

Similar Documents

Publication Publication Date Title
JPS52114915A (en) Dc-dc converter
JPS55122476A (en) Dc-dc converter
JPS52147753A (en) Switching type dc stabilized power supply
DE3176677D1 (en) Flyback power supply booster circuit
SU1023633A1 (en) Driven multivibrator with controllable pulse duration
JPS553625A (en) Magnet driving circuit
JPS5517262A (en) Intermittent dc stabilizing power supply device
JPS5612862A (en) Switching power supply
JPS56160134A (en) Pulse generating circuit
JPS5743209A (en) Regulated power supply
SU445136A1 (en) Sawtooth Transistor Generator
JPS5599830A (en) Timer circuit
SU688995A1 (en) Pulse counter
JPS5444720A (en) Dc voltage converter circuit
SU473291A1 (en) Sawtooth generator
JPS5755426A (en) Direct current power supply circuit
SU1288901A1 (en) Pulse generator
JPS5765018A (en) Pulse modulator
GB910883A (en) Improvements in direct current converters
JPS55125078A (en) Switching power supply
NL7713406A (en) Rectangular into sawtooth waveform converter - controls supply of voltage proportional to frequency of wave and uses output capacitor
JPS56168431A (en) Timer device
JPS5530678A (en) Power source supply circuit for electronic watch
JPS54143906A (en) Ultrasonic liquid-atomizing device
JPS53120160A (en) Switching regulator