JPS564819A - Electric power supply unit - Google Patents

Electric power supply unit

Info

Publication number
JPS564819A
JPS564819A JP7942679A JP7942679A JPS564819A JP S564819 A JPS564819 A JP S564819A JP 7942679 A JP7942679 A JP 7942679A JP 7942679 A JP7942679 A JP 7942679A JP S564819 A JPS564819 A JP S564819A
Authority
JP
Japan
Prior art keywords
voltage
output
comparator
conversion transformer
power supply
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
JP7942679A
Other languages
Japanese (ja)
Other versions
JPS5923189B2 (en
Inventor
Shigeyuki Sakimichi
Shinichi Matsushita
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 JP7942679A priority Critical patent/JPS5923189B2/en
Publication of JPS564819A publication Critical patent/JPS564819A/en
Publication of JPS5923189B2 publication Critical patent/JPS5923189B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Power Conversion In General (AREA)
  • Protection Of Static Devices (AREA)
  • Dc-Dc Converters (AREA)

Abstract

PURPOSE: To enable to obtain stable output against the variation in load, by inputting the rectified voltage on another winding provided with the conversion transformer to the voltage comparator of the error amplifier for output voltage regulation.
CONSTITUTION: The main switch section 3 is ON or OFF by the control of the oscillation circuit 1 and the pulse width modulation circuit 2 to supply power to the secondary side via the conversion transformer 4. In this case, the rectified voltage VR on another winding L4 provided with the conversion transformer 4 is input to the voltage comparator 24 for the power supply V2 for oscillation circuit 1 and so on. Further, at the voltage comparator 24, the rectified voltage VR and the reference voltage VZ are compared to control the pulse width modulation circuit 2 with the output of comparison is regulating the output. Further, the amplitude of the current is detected with the resistor 22 inserted at the current path of the main switch section 3 and it is compared with the reference voltage VZ at the current comparator 25. Further, if it is judged as overcurrent, the thyristor 9 is conducted to stop the oscillation.
COPYRIGHT: (C)1981,JPO&Japio
JP7942679A 1979-06-22 1979-06-22 power supply Expired JPS5923189B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7942679A JPS5923189B2 (en) 1979-06-22 1979-06-22 power supply

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7942679A JPS5923189B2 (en) 1979-06-22 1979-06-22 power supply

Publications (2)

Publication Number Publication Date
JPS564819A true JPS564819A (en) 1981-01-19
JPS5923189B2 JPS5923189B2 (en) 1984-05-31

Family

ID=13689535

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7942679A Expired JPS5923189B2 (en) 1979-06-22 1979-06-22 power supply

Country Status (1)

Country Link
JP (1) JPS5923189B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58166290U (en) * 1982-04-27 1983-11-05 ソニー株式会社 switching power supply circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58166290U (en) * 1982-04-27 1983-11-05 ソニー株式会社 switching power supply circuit
JPS635434Y2 (en) * 1982-04-27 1988-02-15

Also Published As

Publication number Publication date
JPS5923189B2 (en) 1984-05-31

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