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JPS55146519A - Alternating current constant-voltage circuit - Google Patents

Alternating current constant-voltage circuit

Info

Publication number
JPS55146519A
JPS55146519A JP5220979A JP5220979A JPS55146519A JP S55146519 A JPS55146519 A JP S55146519A JP 5220979 A JP5220979 A JP 5220979A JP 5220979 A JP5220979 A JP 5220979A JP S55146519 A JPS55146519 A JP S55146519A
Authority
JP
Japan
Prior art keywords
voltage
resistors
alternating current
transformer
rises
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
JP5220979A
Other languages
Japanese (ja)
Inventor
Kazuo Sakurai
Tokuyuki Fukuda
Shunsuke Kano
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric 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 Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP5220979A priority Critical patent/JPS55146519A/en
Publication of JPS55146519A publication Critical patent/JPS55146519A/en
Pending legal-status Critical Current

Links

Landscapes

  • Continuous-Control Power Sources That Use Transistors (AREA)

Abstract

PURPOSE: To make a load voltage a constant-voltage even if the working condition has been varied, by controlling a base current of a transistor which controls voltage applied to the primary side of a transformer, by use of a load side voltage.
CONSTITUTION: In order to control a transistor (TR3) which is connected to a full wave rectifying circuit Re2, the secondary voltage of a transformer T2 is applied through the full wave rectifying circuit Re2 to a bridge circuit consisting of resistors R4WR6 and a Zener diode ZD3. The control voltage of TR3 is decided by ZD3 and resistors R4, R6, and in case the voltage of the point A is smaller than the Zener voltage, a current in the bridge circuit flows in the direction of (ib) and TR3 is turned ON. In case the secondary voltage of T2 rises as AC power supply V2 rises, and the emitter side of TR3 approaches the voltage of the base side, a base current is decreased, TR3 is shifted from saturation to an active area, and the voltage to be applied to the primary side of T2 is controlled.
COPYRIGHT: (C)1980,JPO&Japio
JP5220979A 1979-04-27 1979-04-27 Alternating current constant-voltage circuit Pending JPS55146519A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5220979A JPS55146519A (en) 1979-04-27 1979-04-27 Alternating current constant-voltage circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5220979A JPS55146519A (en) 1979-04-27 1979-04-27 Alternating current constant-voltage circuit

Publications (1)

Publication Number Publication Date
JPS55146519A true JPS55146519A (en) 1980-11-14

Family

ID=12908367

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5220979A Pending JPS55146519A (en) 1979-04-27 1979-04-27 Alternating current constant-voltage circuit

Country Status (1)

Country Link
JP (1) JPS55146519A (en)

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