JPS5592912A - Power source unit - Google Patents

Power source unit

Info

Publication number
JPS5592912A
JPS5592912A JP16505978A JP16505978A JPS5592912A JP S5592912 A JPS5592912 A JP S5592912A JP 16505978 A JP16505978 A JP 16505978A JP 16505978 A JP16505978 A JP 16505978A JP S5592912 A JPS5592912 A JP S5592912A
Authority
JP
Japan
Prior art keywords
circuit
output system
voltage
output
fall
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
JP16505978A
Other languages
Japanese (ja)
Inventor
Mitsuo Nakamura
Nobuhisa Yokoyama
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP16505978A priority Critical patent/JPS5592912A/en
Publication of JPS5592912A publication Critical patent/JPS5592912A/en
Pending legal-status Critical Current

Links

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

Abstract

PURPOSE: To simplify circuit constitution by eliminating the need for another circuit for a sequence when a power unit requested to follow the order of a rise and fall in voltage is OFF, by realizing the sequence by using an overcurrent trailing circuit used normally for the purpose of protection.
CONSTITUTION: A voltage supplied from common AC power supply AC is converted into DC voltages by rectifying and smoothing circuits 1 and 2; the DC voltage of circuit 1 is applied to 1st DC output system PS1, and the DC voltage of circuit 2 to 2nd DC output system PS2. To request the DC voltage of output system PS1 to fall more rapidly than that of output system PS2 with AC power supply AC OFF, "dogleg"-shaped overcurrent trailing circuit 3 is connected between the output side of circuit 1 and the input side of output system PS1 and the rise of output system PS1 is delayed by this circuit 3 and slow start circuit 4. Then, circuit 3 is operated by short circuit 5 provided with switch SWC performing the reverse operation of a power switch at the output side of output system PS1, thereby quickening the fall of output voltage OUT2.
COPYRIGHT: (C)1980,JPO&Japio
JP16505978A 1978-12-29 1978-12-29 Power source unit Pending JPS5592912A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16505978A JPS5592912A (en) 1978-12-29 1978-12-29 Power source unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16505978A JPS5592912A (en) 1978-12-29 1978-12-29 Power source unit

Publications (1)

Publication Number Publication Date
JPS5592912A true JPS5592912A (en) 1980-07-14

Family

ID=15805061

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16505978A Pending JPS5592912A (en) 1978-12-29 1978-12-29 Power source unit

Country Status (1)

Country Link
JP (1) JPS5592912A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61108092U (en) * 1984-12-19 1986-07-09

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5344854A (en) * 1976-10-05 1978-04-22 Toshiba Corp Dc stbilized power source unit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5344854A (en) * 1976-10-05 1978-04-22 Toshiba Corp Dc stbilized power source unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61108092U (en) * 1984-12-19 1986-07-09

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