JPS5797124A - Constant voltage power supply - Google Patents

Constant voltage power supply

Info

Publication number
JPS5797124A
JPS5797124A JP55171639A JP17163980A JPS5797124A JP S5797124 A JPS5797124 A JP S5797124A JP 55171639 A JP55171639 A JP 55171639A JP 17163980 A JP17163980 A JP 17163980A JP S5797124 A JPS5797124 A JP S5797124A
Authority
JP
Japan
Prior art keywords
circuit
voltage
charging
capacitor
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.)
Pending
Application number
JP55171639A
Other languages
Japanese (ja)
Inventor
Tomoyori Shimabukuro
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.)
Victor Company of Japan Ltd
Nippon Victor KK
Original Assignee
Victor Company of Japan Ltd
Nippon Victor KK
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 Victor Company of Japan Ltd, Nippon Victor KK filed Critical Victor Company of Japan Ltd
Priority to JP55171639A priority Critical patent/JPS5797124A/en
Publication of JPS5797124A publication Critical patent/JPS5797124A/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

Landscapes

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

Abstract

PURPOSE:To obtain a device having a simple constitution of circuit with a small loss of energy and high accuracy of stabilization, by providing a charging circuit having a series connection a capacitor and a transistor and controlling the voltage of a DC output circuit with the charging voltage of the charging circuit. CONSTITUTION:A capacitor charging circuit having a series connection of a rectifier D1, a capacitor C1 and a transistor TR1 is provided to a commercial power supply or an output circuit of a transformer. Then the voltage E2 of a DC output circuit which is controlled by the charging voltage E1 between both terminals of the capacitor C1 is compared with the preset desired output voltage as well as with a certain level of reference voltage of the DC output circuit. Based on the result of this comparison, the on/off time limit is controlled for the TR1 to control the charging time limit to the C1. For instance, a circuit shown in the diagram is used to control the TR1 via a photocoupler PC, a TR3, a TR2, etc. and in accordance with the result of the above-mentioned comparison.
JP55171639A 1980-12-05 1980-12-05 Constant voltage power supply Pending JPS5797124A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55171639A JPS5797124A (en) 1980-12-05 1980-12-05 Constant voltage power supply

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55171639A JPS5797124A (en) 1980-12-05 1980-12-05 Constant voltage power supply

Publications (1)

Publication Number Publication Date
JPS5797124A true JPS5797124A (en) 1982-06-16

Family

ID=15926925

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55171639A Pending JPS5797124A (en) 1980-12-05 1980-12-05 Constant voltage power supply

Country Status (1)

Country Link
JP (1) JPS5797124A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55109171A (en) * 1979-02-15 1980-08-22 Fujitsu Ltd Dc-dc converter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55109171A (en) * 1979-02-15 1980-08-22 Fujitsu Ltd Dc-dc converter

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