JPS5725016A - Constant-voltage circuit - Google Patents

Constant-voltage circuit

Info

Publication number
JPS5725016A
JPS5725016A JP9971680A JP9971680A JPS5725016A JP S5725016 A JPS5725016 A JP S5725016A JP 9971680 A JP9971680 A JP 9971680A JP 9971680 A JP9971680 A JP 9971680A JP S5725016 A JPS5725016 A JP S5725016A
Authority
JP
Japan
Prior art keywords
capacitor
trq
load
switch
resistance
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
JP9971680A
Other languages
Japanese (ja)
Inventor
Eiji Kamihira
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.)
Denso Ten Ltd
Original Assignee
Denso Ten 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 Denso Ten Ltd filed Critical Denso Ten Ltd
Priority to JP9971680A priority Critical patent/JPS5725016A/en
Publication of JPS5725016A publication Critical patent/JPS5725016A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F3/00—Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
    • G05F3/02—Regulating voltage or current
    • G05F3/08—Regulating voltage or current wherein the variable is dc
    • G05F3/10—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics
    • G05F3/16—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices
    • G05F3/18—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using Zener diodes

Abstract

PURPOSE:To diminish the capacity of a capacitor, by connecting a series circuit consisting of a diode and a capacitor, in parallel with an electric power source, connecting a resistance and a Zener diode in parallel with the capacitor, and connecting its connecting point to the base of a transistor. CONSTITUTION:The collector of a transistor (TR) Q and its emitter are connected to a switch S1 and a load L, respectively, a resistance R and a Zener diode ZD are connected to a connecting point of a diode D and a capacitor C which have been connected in parallel with an electric power source B through the switch S1, and the base of the TRQ is connected to its connecting point. Accordingly, when electric power is being supplied to the load through the TRQ, the capacitor C is charged with electricity, and in case when a motor M has been started by a switch S2, if supply voltage is reduced, a base current is made to flow into the TRQ through the resistance R from the capacitor C, therefore, constant voltage is applied to the load L through the TRQ.
JP9971680A 1980-07-21 1980-07-21 Constant-voltage circuit Pending JPS5725016A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9971680A JPS5725016A (en) 1980-07-21 1980-07-21 Constant-voltage circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9971680A JPS5725016A (en) 1980-07-21 1980-07-21 Constant-voltage circuit

Publications (1)

Publication Number Publication Date
JPS5725016A true JPS5725016A (en) 1982-02-09

Family

ID=14254790

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9971680A Pending JPS5725016A (en) 1980-07-21 1980-07-21 Constant-voltage circuit

Country Status (1)

Country Link
JP (1) JPS5725016A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6657408B2 (en) * 2001-06-06 2003-12-02 Matsushita Electric Industrial Co., Ltd. Air conditioner

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6657408B2 (en) * 2001-06-06 2003-12-02 Matsushita Electric Industrial Co., Ltd. Air conditioner

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