JPS54131753A - Dc power source stabilizing circuit - Google Patents

Dc power source stabilizing circuit

Info

Publication number
JPS54131753A
JPS54131753A JP3955578A JP3955578A JPS54131753A JP S54131753 A JPS54131753 A JP S54131753A JP 3955578 A JP3955578 A JP 3955578A JP 3955578 A JP3955578 A JP 3955578A JP S54131753 A JPS54131753 A JP S54131753A
Authority
JP
Japan
Prior art keywords
voltage
gate
circuit
integrated circuit
power source
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
JP3955578A
Other languages
Japanese (ja)
Inventor
Shizuo Asano
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP3955578A priority Critical patent/JPS54131753A/en
Publication of JPS54131753A publication Critical patent/JPS54131753A/en
Pending legal-status Critical Current

Links

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

Abstract

PURPOSE: To provide the subject circuit wherein a power detecting circuit, a constant voltage circuit, an AND gate and an OR gate are used, whereby a stable DC source can be obtained without requiring change-over of switch even when a DC power source of above or below the rated voltage of an integrated circuit is produced as output.
CONSTITUTION: When a voltage above the rated voltage of an integrated circuit 4 is applied to an input terminal, a voltage detecting circuit 6 opens an AND gate 9, and a voltage suppressed to a predetermined voltage by means of a constant voltage circuit 7 is supplied to the integrated circuit 4 through the AND gate 9 and OR gate 10, when a voltage below the rated voltage of the integrated circuit 4 is applied to the input terminal, the voltage detecting circuit 6 opens the AND gate 9, and an input voltage is supplied through AND gate 9 and OR gate to the integrated circuit 4. Since the switch change-over operation is carried out electronically in this manner, the change-over operation of the switch is not required and the action can be stabilized.
COPYRIGHT: (C)1979,JPO&Japio
JP3955578A 1978-04-03 1978-04-03 Dc power source stabilizing circuit Pending JPS54131753A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3955578A JPS54131753A (en) 1978-04-03 1978-04-03 Dc power source stabilizing circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3955578A JPS54131753A (en) 1978-04-03 1978-04-03 Dc power source stabilizing circuit

Publications (1)

Publication Number Publication Date
JPS54131753A true JPS54131753A (en) 1979-10-13

Family

ID=12556304

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3955578A Pending JPS54131753A (en) 1978-04-03 1978-04-03 Dc power source stabilizing circuit

Country Status (1)

Country Link
JP (1) JPS54131753A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011233100A (en) * 2010-04-30 2011-11-17 Clarion Co Ltd Power source circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011233100A (en) * 2010-04-30 2011-11-17 Clarion Co Ltd Power source circuit

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