JPS61281315A - Power circuit - Google Patents

Power circuit

Info

Publication number
JPS61281315A
JPS61281315A JP12299585A JP12299585A JPS61281315A JP S61281315 A JPS61281315 A JP S61281315A JP 12299585 A JP12299585 A JP 12299585A JP 12299585 A JP12299585 A JP 12299585A JP S61281315 A JPS61281315 A JP S61281315A
Authority
JP
Japan
Prior art keywords
control
circuit
current
output
transistor
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
JP12299585A
Other languages
Japanese (ja)
Inventor
Junichi Yasuno
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 JP12299585A priority Critical patent/JPS61281315A/en
Publication of JPS61281315A publication Critical patent/JPS61281315A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To control efficiently an output side by detecting an increase of a control current, turning on a control transistor thereby, and limiting a control current of a stabilizing circuit.
CONSTITUTION: A power circuit is constituted of an input voltage 1, a stabilizing circuit 2, a reference voltage setting circuit 3, and a control circuit 4. In this state, as for this control circuit 4, when a current taken out from an output side increases, a current flowing through its resistances 401, 402 also increases, and when a voltage drop during this time increases to an on-voltage of a control transistor 402, it is turned on, a control output 42 is set to zero and a transistor 201 of the reference voltage setting circuit 3 and the stabilizing circuit 2 is turned off. As a result, an output also becomes zero, and an output current can be limited.
COPYRIGHT: (C)1986,JPO&Japio
JP12299585A 1985-06-06 1985-06-06 Power circuit Pending JPS61281315A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12299585A JPS61281315A (en) 1985-06-06 1985-06-06 Power circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12299585A JPS61281315A (en) 1985-06-06 1985-06-06 Power circuit

Publications (1)

Publication Number Publication Date
JPS61281315A true JPS61281315A (en) 1986-12-11

Family

ID=14849673

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12299585A Pending JPS61281315A (en) 1985-06-06 1985-06-06 Power circuit

Country Status (1)

Country Link
JP (1) JPS61281315A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009211210A (en) * 2008-02-29 2009-09-17 Fujitsu Ten Ltd Power supply circuit device and electronic device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009211210A (en) * 2008-02-29 2009-09-17 Fujitsu Ten Ltd Power supply circuit device and electronic device

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