JPS5762429A - Regulator circuit - Google Patents

Regulator circuit

Info

Publication number
JPS5762429A
JPS5762429A JP13858980A JP13858980A JPS5762429A JP S5762429 A JPS5762429 A JP S5762429A JP 13858980 A JP13858980 A JP 13858980A JP 13858980 A JP13858980 A JP 13858980A JP S5762429 A JPS5762429 A JP S5762429A
Authority
JP
Japan
Prior art keywords
voltage
regulator
zener diode
current
series
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
JP13858980A
Other languages
Japanese (ja)
Other versions
JPH0232642B2 (en
Inventor
Kenta Mikuriya
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.)
Yokogawa Electric Corp
Original Assignee
Yokogawa Electric Corp
Yokogawa Hokushin Electric Corp
Yokogawa Electric Works 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 Yokogawa Electric Corp, Yokogawa Hokushin Electric Corp, Yokogawa Electric Works Ltd filed Critical Yokogawa Electric Corp
Priority to JP13858980A priority Critical patent/JPS5762429A/en
Publication of JPS5762429A publication Critical patent/JPS5762429A/en
Publication of JPH0232642B2 publication Critical patent/JPH0232642B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
    • G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
    • G05F1/563—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices including two stages of regulation at least one of which is output level responsive, e.g. coarse and fine regulation

Abstract

PURPOSE:To reduce the loss of electric power at a series regulator by flowing a current from a DC/DC converter and the transformer of a switching regulator to the Zener diode of the series regulator. CONSTITUTION:The transformer T of a switching regulator 1 is provided with another winding n3; its one terminal is connected to the emitter of the transistor (TR)Q1 of a series regulator 2, and the other terminal is connected to a common point through the series circuit of a diode D1 and a capacitor C1. A current i2 flowing through a Zener diode ZD is one obtained by dividing a voltage, regulated by the Zener diode ZD, by a resistance R1, i.e., a current free from fluctuations of an input voltage VS. In addition, the value of the output voltage Vc(=Va+Vb) of a rectifying and smoothing circuit 3 may be greater than a Vz, so the Vs can rise up to a level higher than the Va approximately by the saturation voltage (about 0.2V) of the TRQ1, reducing the loss of a voltage at the series regulator 2 greatly.
JP13858980A 1980-10-03 1980-10-03 Regulator circuit Granted JPS5762429A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13858980A JPS5762429A (en) 1980-10-03 1980-10-03 Regulator circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13858980A JPS5762429A (en) 1980-10-03 1980-10-03 Regulator circuit

Publications (2)

Publication Number Publication Date
JPS5762429A true JPS5762429A (en) 1982-04-15
JPH0232642B2 JPH0232642B2 (en) 1990-07-23

Family

ID=15225631

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13858980A Granted JPS5762429A (en) 1980-10-03 1980-10-03 Regulator circuit

Country Status (1)

Country Link
JP (1) JPS5762429A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4868729A (en) * 1982-02-16 1989-09-19 Canon Kabushiki Kaisha Power supply unit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52133550A (en) * 1976-04-30 1977-11-09 Takeyasu Isaburou Low stand by low loss constant voltage power supply
JPS53137620U (en) * 1977-04-06 1978-10-31

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52133550A (en) * 1976-04-30 1977-11-09 Takeyasu Isaburou Low stand by low loss constant voltage power supply
JPS53137620U (en) * 1977-04-06 1978-10-31

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4868729A (en) * 1982-02-16 1989-09-19 Canon Kabushiki Kaisha Power supply unit

Also Published As

Publication number Publication date
JPH0232642B2 (en) 1990-07-23

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