JPS5574613A - Regulated power supply unit - Google Patents

Regulated power supply unit

Info

Publication number
JPS5574613A
JPS5574613A JP14929378A JP14929378A JPS5574613A JP S5574613 A JPS5574613 A JP S5574613A JP 14929378 A JP14929378 A JP 14929378A JP 14929378 A JP14929378 A JP 14929378A JP S5574613 A JPS5574613 A JP S5574613A
Authority
JP
Japan
Prior art keywords
circuit
voltage
power supply
output
regulated power
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
JP14929378A
Other languages
Japanese (ja)
Inventor
Osamu Fujita
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP14929378A priority Critical patent/JPS5574613A/en
Publication of JPS5574613A publication Critical patent/JPS5574613A/en
Pending legal-status Critical Current

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

Abstract

PURPOSE: To enable excellent operation over broad voltage range, by the stabilized circuit having higher stability when the output voltage of non-regulated power supply is high and by the active power filter having greater ripple rejection effect when low.
CONSTITUTION: The control transistor Tr3 is connected between the non-regulated power supply circuit 1 and the load 2, the error detection circuit 4 is connected to the base of Tr3, to detect the voltage variation of output of Tr3, and Tr3 is controlled so that the output voltage can be stabilized. On the other hand, the auxiliary power supply circuit 14 supplies the auxiliary power supply having greater voltage than the output voltage of Tr3 to connect the output terminal of the circuit 14 to the base of Tr3 via the filter circuit 8. Further, when the output voltage of the circuit 1 is less than a given voltage, the circuit 8 is connected to the output terminal of the circuit 1 via the diode 18 conducted at the condition. Thus, when the voltage of the circuit 1 is -reater, the unit can act the stabilizing circuit having greater stability and when low, it acts like the active power filter greater in the ripple rejection effect, thus it can operate excellently over a wide variety of the voltage.
COPYRIGHT: (C)1980,JPO&Japio
JP14929378A 1978-11-30 1978-11-30 Regulated power supply unit Pending JPS5574613A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14929378A JPS5574613A (en) 1978-11-30 1978-11-30 Regulated power supply unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14929378A JPS5574613A (en) 1978-11-30 1978-11-30 Regulated power supply unit

Publications (1)

Publication Number Publication Date
JPS5574613A true JPS5574613A (en) 1980-06-05

Family

ID=15472003

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14929378A Pending JPS5574613A (en) 1978-11-30 1978-11-30 Regulated power supply unit

Country Status (1)

Country Link
JP (1) JPS5574613A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6380311A (en) * 1986-09-24 1988-04-11 Matsushita Electric Ind Co Ltd Power supply circuit

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5253251A (en) * 1975-10-28 1977-04-28 Toshiba Corp Constant voltage circuit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5253251A (en) * 1975-10-28 1977-04-28 Toshiba Corp Constant voltage circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6380311A (en) * 1986-09-24 1988-04-11 Matsushita Electric Ind Co Ltd Power supply circuit

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