JPH03186908A - Switching power source - Google Patents

Switching power source

Info

Publication number
JPH03186908A
JPH03186908A JP32571589A JP32571589A JPH03186908A JP H03186908 A JPH03186908 A JP H03186908A JP 32571589 A JP32571589 A JP 32571589A JP 32571589 A JP32571589 A JP 32571589A JP H03186908 A JPH03186908 A JP H03186908A
Authority
JP
Japan
Prior art keywords
load
value
output
stopped
current
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
JP32571589A
Other languages
Japanese (ja)
Inventor
Seiya Azuma
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP32571589A priority Critical patent/JPH03186908A/en
Publication of JPH03186908A publication Critical patent/JPH03186908A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To protect a load-side by fluctuating the value of an overcurrent point in accordance with the fluctuation of the load-side and stopping the switching operation of a switching means when the value of a current which a smoothing means outputs reaches the value of the overcurrent point.
CONSTITUTION: When the value of a load current I0 exceeds the value of a rated current on the load-side, an output lack voltage detection circuit 3 detects it and the output of a comparator IC 3 is set to 'low', whereby the operation of a transistor Q2 is stopped. Thus, the operation of a switching transistor Q1 is stopped. When the value of a load current I0 exceeds the overcurrent point Va, the output of the comparator IC 3 is set to 'low' and the operation of the switching transistor Q1 is stopped by an output from an amplifier IC 4. Thus, an overcurrent can securely be detected at the time of shorting in a load-side terminal and the load-side can be protected.
COPYRIGHT: (C)1991,JPO&Japio
JP32571589A 1989-12-15 1989-12-15 Switching power source Pending JPH03186908A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP32571589A JPH03186908A (en) 1989-12-15 1989-12-15 Switching power source

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP32571589A JPH03186908A (en) 1989-12-15 1989-12-15 Switching power source

Publications (1)

Publication Number Publication Date
JPH03186908A true JPH03186908A (en) 1991-08-14

Family

ID=18179886

Family Applications (1)

Application Number Title Priority Date Filing Date
JP32571589A Pending JPH03186908A (en) 1989-12-15 1989-12-15 Switching power source

Country Status (1)

Country Link
JP (1) JPH03186908A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009001630A1 (en) 2007-06-28 2008-12-31 Tayca Corporation Anticorrosive pigment composition and water-based anticorrosive coating material containing the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009001630A1 (en) 2007-06-28 2008-12-31 Tayca Corporation Anticorrosive pigment composition and water-based anticorrosive coating material containing the same

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