JPS57209515A - Power supply circuit - Google Patents

Power supply circuit

Info

Publication number
JPS57209515A
JPS57209515A JP9483981A JP9483981A JPS57209515A JP S57209515 A JPS57209515 A JP S57209515A JP 9483981 A JP9483981 A JP 9483981A JP 9483981 A JP9483981 A JP 9483981A JP S57209515 A JPS57209515 A JP S57209515A
Authority
JP
Japan
Prior art keywords
voltage
current
power supply
circuit
load
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
JP9483981A
Other languages
Japanese (ja)
Inventor
Shingo Kamiya
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.)
Nippon Gakki Co Ltd
Original Assignee
Nippon Gakki 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 Nippon Gakki Co Ltd filed Critical Nippon Gakki Co Ltd
Priority to JP9483981A priority Critical patent/JPS57209515A/en
Publication of JPS57209515A publication Critical patent/JPS57209515A/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

Landscapes

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

Abstract

PURPOSE:To reduce the copper loss of a primary winding of a power supply transformer, by avoiding an excessive charging current and a rush current through the elimination of timing concentration of a charge current to a smoothing capacitor. CONSTITUTION:A voltage induced in a secondary winding 3b is rectified at a rectifying circuit 4, smoothed at a smoothing capacitor C2 and supplied to a load 5. In a constant current circuit 2, a diode bridge consisting of diodes D1-D4 operates the constant current circuit 2 at both polarities of an AC power supply voltage. A capacitor C1 produces a voltage Vr driving the circuit 2. A voltage Vr of a photo transistor TR10 is controlled by controlling charge/discharge of a capacitor C1 to control a primary current i1 to a value matched to the load 5. An output voltage VD is made constant to a specified value with a negative feedback operation. The output voltage VD can be kept to the specified value with the similar operation even with the fluctuated load 5.
JP9483981A 1981-06-19 1981-06-19 Power supply circuit Pending JPS57209515A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9483981A JPS57209515A (en) 1981-06-19 1981-06-19 Power supply circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9483981A JPS57209515A (en) 1981-06-19 1981-06-19 Power supply circuit

Publications (1)

Publication Number Publication Date
JPS57209515A true JPS57209515A (en) 1982-12-22

Family

ID=14121206

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9483981A Pending JPS57209515A (en) 1981-06-19 1981-06-19 Power supply circuit

Country Status (1)

Country Link
JP (1) JPS57209515A (en)

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