JPS641474A - Constant current switching power source equipment - Google Patents

Constant current switching power source equipment

Info

Publication number
JPS641474A
JPS641474A JP4652288A JP4652288A JPS641474A JP S641474 A JPS641474 A JP S641474A JP 4652288 A JP4652288 A JP 4652288A JP 4652288 A JP4652288 A JP 4652288A JP S641474 A JPS641474 A JP S641474A
Authority
JP
Japan
Prior art keywords
source
current
circuit
constructed
fed
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
JP4652288A
Other languages
Japanese (ja)
Other versions
JPH011474A (en
Inventor
Hideki Endo
Takaya Matsuse
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.)
Koden Electronics Co Ltd
Original Assignee
Koden Electronics 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 Koden Electronics Co Ltd filed Critical Koden Electronics Co Ltd
Priority to JP4652288A priority Critical patent/JPS641474A/en
Publication of JPH011474A publication Critical patent/JPH011474A/en
Publication of JPS641474A publication Critical patent/JPS641474A/en
Pending legal-status Critical Current

Links

Landscapes

  • Dc-Dc Converters (AREA)

Abstract

PURPOSE: To eliminate bad influence onto other machinery, by taking out con stant current from a D.C. supply source during charging interval and charging a smoothing capacitor.
CONSTITUTION: Power is fed from a D.C. source 1 through a switching source circuit 2 to a load 3. The source circuit 2 comprises a switching element 4 for carrying out ON/OFF driving of current fed from the D.C. source 1, a smoothing choke coil 5 and a smoothing capacitor therefor, a drive transistor 8 for a damper diode 7 and the switching element 4, a current detecting resistor 9 and a control circuit 11. The control circuit 11 is constructed with a detecting means 31 and first and second control means 15, 16. The second control means 16 is constructed with a flip-flop 24, a drive circuit 26 and the like, while the first control means 15 is constructed with a sawtooth wave generator. Conse quently, a load 3 temporarily consuming large power is prevented from being fed with such current as proportional to the differential potential between the D.C. source 1 and the smoothing capacitor 6, resulting in suppression of overcurrent.
COPYRIGHT: (C)1989,JPO&Japio
JP4652288A 1987-02-28 1988-02-29 Constant current switching power source equipment Pending JPS641474A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4652288A JPS641474A (en) 1987-02-28 1988-02-29 Constant current switching power source equipment

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP62-45993 1987-02-28
JP4599387 1987-02-28
JP4652288A JPS641474A (en) 1987-02-28 1988-02-29 Constant current switching power source equipment

Publications (2)

Publication Number Publication Date
JPH011474A JPH011474A (en) 1989-01-05
JPS641474A true JPS641474A (en) 1989-01-05

Family

ID=26386092

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4652288A Pending JPS641474A (en) 1987-02-28 1988-02-29 Constant current switching power source equipment

Country Status (1)

Country Link
JP (1) JPS641474A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7411374B2 (en) 2004-04-21 2008-08-12 02Micro Intermnational Limited Circuitry and control method for charging capacitive loads
JP2018170874A (en) * 2017-03-30 2018-11-01 オムロンオートモーティブエレクトロニクス株式会社 Bidirectional dc-dc converter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7411374B2 (en) 2004-04-21 2008-08-12 02Micro Intermnational Limited Circuitry and control method for charging capacitive loads
JP2018170874A (en) * 2017-03-30 2018-11-01 オムロンオートモーティブエレクトロニクス株式会社 Bidirectional dc-dc converter

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