JPS5691678A - Switching power supply device - Google Patents

Switching power supply device

Info

Publication number
JPS5691678A
JPS5691678A JP16886279A JP16886279A JPS5691678A JP S5691678 A JPS5691678 A JP S5691678A JP 16886279 A JP16886279 A JP 16886279A JP 16886279 A JP16886279 A JP 16886279A JP S5691678 A JPS5691678 A JP S5691678A
Authority
JP
Japan
Prior art keywords
output
voltage
pulse width
zero
turning
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.)
Granted
Application number
JP16886279A
Other languages
Japanese (ja)
Other versions
JPS6222348B2 (en
Inventor
Masafumi Nakamura
Takanori Kudo
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP16886279A priority Critical patent/JPS5691678A/en
Publication of JPS5691678A publication Critical patent/JPS5691678A/en
Publication of JPS6222348B2 publication Critical patent/JPS6222348B2/ja
Granted 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

Abstract

PURPOSE:To improve a protective function making speedy in a response of a feed back by a method wherein a time constant circuit turned to a factor of lag of the response in a protection circuit is removed. CONSTITUTION:An output voltage or current is detected to be compared with a reference voltage 9 and amplified and a signal thereof is fed as an input to a pulse width modulator 5 to control the output. When the output is shorten, it is detected by a detecting resistor 16 and when it becomes higher than the reference voltage 9, an output from a voltage comparator 21 reaches a high level to effect turning a switch 22 on, discharging rapidly the electric charge of a condenser 23, falling rapidly the voltage, turning the pulse width of the pulse width modulator 5 to zero and turning also the output itself to zero. Due to this, the voltage of the resistor 16 is made zero to cause the output of the comparator 21 to come down to a low level, the switch element 22 to be turned off to raise the voltage of the condenser 23 and the pulse width of the modulator 5 also to be increased starting from zero, and when the output reaches a predetermined value again the same operations are to be repeated. These operations made an excess current protection circuit with the quick response characteristic.
JP16886279A 1979-12-24 1979-12-24 Switching power supply device Granted JPS5691678A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16886279A JPS5691678A (en) 1979-12-24 1979-12-24 Switching power supply device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16886279A JPS5691678A (en) 1979-12-24 1979-12-24 Switching power supply device

Publications (2)

Publication Number Publication Date
JPS5691678A true JPS5691678A (en) 1981-07-24
JPS6222348B2 JPS6222348B2 (en) 1987-05-18

Family

ID=15875928

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16886279A Granted JPS5691678A (en) 1979-12-24 1979-12-24 Switching power supply device

Country Status (1)

Country Link
JP (1) JPS5691678A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998021887A1 (en) * 1996-11-15 1998-05-22 Thomson Consumer Electronics, Inc. Quick-reset circuit for auxiliary power supply

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998021887A1 (en) * 1996-11-15 1998-05-22 Thomson Consumer Electronics, Inc. Quick-reset circuit for auxiliary power supply
US5956240A (en) * 1996-11-15 1999-09-21 Thomson Consumer Electronics, Inc. Quick-reset circuit for auxiliary power supply

Also Published As

Publication number Publication date
JPS6222348B2 (en) 1987-05-18

Similar Documents

Publication Publication Date Title
JPS5459535A (en) Controller for glow plug
JPS57170607A (en) Amplifying circuit
JPS5691678A (en) Switching power supply device
KR890009723A (en) Position control device on the plane of the aircraft
JPS5526032A (en) Power supply device
JPS54555A (en) Automatic gain control unit
JPS5659365A (en) Arithmetic circuit
JPS549389A (en) Temprature controller
JPS5423462A (en) Timer circuit
JPS6412824A (en) Output variation system for inverse voltage detection of dispersed power source
JPS57171577A (en) Electric power source device for dc welding
JPS5458181A (en) Multi-step control circuit
JPS5245379A (en) Circuit for detecting abnormal rise of temperature
JPS5616311A (en) Transistor circuit
JPS5238145A (en) Continous variable type direct current constant voltage power supply
JPS5568602A (en) Plunger solenoid driving circuit
JPS5482646A (en) Surge control circuit
JPS56125110A (en) Reset circuit
JPS5730908A (en) Capacity type displacement conversion device
GB1245798A (en) Apparatus and method for generating linear voltage
JPS5664625A (en) Temperature detecting system
JPS54119295A (en) Humidity detector
JPS55166057A (en) Device for inspecting cmos integrated circuit
JPS5480015A (en) Automatic output control circuit
JPS6438664A (en) Holding circuit