JPS59106012A - Constant voltage circuit - Google Patents

Constant voltage circuit

Info

Publication number
JPS59106012A
JPS59106012A JP21597782A JP21597782A JPS59106012A JP S59106012 A JPS59106012 A JP S59106012A JP 21597782 A JP21597782 A JP 21597782A JP 21597782 A JP21597782 A JP 21597782A JP S59106012 A JPS59106012 A JP S59106012A
Authority
JP
Japan
Prior art keywords
constant voltage
circuit
voltage circuit
load
turned
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
JP21597782A
Other languages
Japanese (ja)
Inventor
Keikichi Okada
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 JP21597782A priority Critical patent/JPS59106012A/en
Publication of JPS59106012A publication Critical patent/JPS59106012A/en
Pending 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
    • G05F1/468—Regulating voltage or current wherein the variable actually regulated by the final control device is dc characterised by reference voltage circuitry, e.g. soft start, remote shutdown

Abstract

PURPOSE:To reduce the power consumption of a constant voltage circuit to zero when a load is opened by stopping automatically the feed to a current by- pass circuit of a reference voltage generating circuit or the like at an unloading time. CONSTITUTION:A transistor TR 10 and resistances 11 and 12 detect whether a load 7 is connected or not, and they stop automatically the feed to the reference voltage generating circuit consisting of a Zener diode 3 at an unloading time. The current from a power source is flowed through resistances 11 and 12 to turn on the TR10 when a power switch 6 in the load side is turned on, and therefore, this circuit is equivalent to a conventional constant voltage circuit. When the power switch 6 is turned off, the TR10 is turned off, and the feed from the power source 8 to the Zener diode 3 is stopped, and the power consumption of the constant voltage circuit becomes zero. Thus, the power consumption of the constant voltage circuit at the time free from the load is reduced to zero.
JP21597782A 1982-12-09 1982-12-09 Constant voltage circuit Pending JPS59106012A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21597782A JPS59106012A (en) 1982-12-09 1982-12-09 Constant voltage circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21597782A JPS59106012A (en) 1982-12-09 1982-12-09 Constant voltage circuit

Publications (1)

Publication Number Publication Date
JPS59106012A true JPS59106012A (en) 1984-06-19

Family

ID=16681368

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21597782A Pending JPS59106012A (en) 1982-12-09 1982-12-09 Constant voltage circuit

Country Status (1)

Country Link
JP (1) JPS59106012A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62166515U (en) * 1986-04-08 1987-10-22

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4720184U (en) * 1971-02-10 1972-11-07

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4720184U (en) * 1971-02-10 1972-11-07

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62166515U (en) * 1986-04-08 1987-10-22

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