KR970004252A - Switching power supply - Google Patents
Switching power supply Download PDFInfo
- Publication number
- KR970004252A KR970004252A KR1019960009949A KR19960009949A KR970004252A KR 970004252 A KR970004252 A KR 970004252A KR 1019960009949 A KR1019960009949 A KR 1019960009949A KR 19960009949 A KR19960009949 A KR 19960009949A KR 970004252 A KR970004252 A KR 970004252A
- Authority
- KR
- South Korea
- Prior art keywords
- circuit
- horizontal synchronizing
- synchronizing signal
- sawtooth wave
- pulse
- 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.)
- Granted
Links
- 238000004804 winding Methods 0.000 claims 7
- 238000009499 grossing Methods 0.000 claims 6
- 238000010586 diagram Methods 0.000 description 3
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of DC power input into DC power output
- H02M3/22—Conversion of DC power input into DC power output with intermediate conversion into AC
- H02M3/24—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters
- H02M3/28—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
- Television Receiver Circuits (AREA)
- Power Conversion In General (AREA)
Abstract
표시 장치를 갖는 컴퓨터 시스템의 스위칭 전원 장치의 대기상태에 있어서 전원손실의 감소 및 잡음 제거를 용이하게 달성한다. 직류 전압을 스위칭 트랜지스터(7)로 ONㆍOFF하여, 출력 트랜스(5)를 통해 주회로(30)및 부회로(34)에 전력을 공급하는 스위칭 전원 장치에 있어서, 주회로(30)를 정상적으로 구동할 때에는 수평동기 신호와 동일한 주파수로 스위칭 트랜지스터(7)를 ONㆍOFF한다. 대기시에는 수평 동기 신호보다도 낮은 주파수로 스위칭 트랜지스터(7)를 ONㆍOFF한다.The power loss and the noise can be easily reduced in the standby state of the switching power supply unit of the computer system having the display device. A switching power supply device for turning on and off a DC voltage by a switching transistor and supplying power to a main circuit (30) and a sub circuit (34) via an output transformer (5) The switching transistor 7 is turned on and off at the same frequency as the horizontal synchronizing signal. The switching transistor 7 is turned on and off at a frequency lower than the horizontal synchronizing signal.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.
제1도는 실시예의 스위칭형 전원 장치를 도시한 회로도이다. 제2도는 제1도의 전압제어 신호형성 회로를 상세히 도시한 회로도이다. 제3도는 제1도의 PWM 펄스 발생 회로와 그것의 출력단을 도시한 회로도이다.FIG. 1 is a circuit diagram showing a switching type power supply device of an embodiment. Fig. 2 is a circuit diagram showing in detail the voltage control signal generating circuit of Fig. 1. Fig. FIG. 3 is a circuit diagram showing a PWM pulse generating circuit and its output stage in FIG. 1; FIG.
Claims (4)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1995-178235 | 1995-06-21 | ||
JP7178235A JPH099174A (en) | 1995-06-21 | 1995-06-21 | Switching type power supply device |
Publications (2)
Publication Number | Publication Date |
---|---|
KR970004252A true KR970004252A (en) | 1997-01-29 |
KR100225311B1 KR100225311B1 (en) | 1999-10-15 |
Family
ID=16044963
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019960009949A Expired - Fee Related KR100225311B1 (en) | 1995-06-21 | 1996-04-03 | Switched power supplies |
Country Status (2)
Country | Link |
---|---|
JP (1) | JPH099174A (en) |
KR (1) | KR100225311B1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0875983B1 (en) * | 1997-04-30 | 2004-09-15 | Fidelix Y.K. | A power supply apparatus |
JP2000116027A (en) * | 1998-03-10 | 2000-04-21 | Fiderikkusu:Kk | Power supply device |
KR100603421B1 (en) | 1999-08-24 | 2006-07-20 | 페어차일드코리아반도체 주식회사 | Switched-Mode Power Supplies with Burst Mode Using Error Amplifiers |
KR100586988B1 (en) | 2004-08-09 | 2006-06-08 | 삼성전자주식회사 | Electronics |
JP5980107B2 (en) * | 2012-12-03 | 2016-08-31 | 三菱電機株式会社 | Power supply device and lighting device |
CN115118137A (en) * | 2022-06-29 | 2022-09-27 | 北京润科通用技术有限公司 | Pulse distribution device and method |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3602858A1 (en) * | 1986-01-31 | 1987-08-06 | Thomson Brandt Gmbh | SWITCHING POWER SUPPLY FOR TELEVISIONS |
DE3641303A1 (en) * | 1986-12-03 | 1988-06-16 | Thomson Brandt Gmbh | TELEVISION RECEIVER WITH A MICROPROCESSOR CONTROLLED CONTROL PANEL AND WITH A SWITCHING POWER SUPPLY |
FR2607991B1 (en) * | 1986-12-05 | 1989-02-03 | Radiotechnique Ind & Comm | CUT-OUT POWER SUPPLY FOR A TELEVISION EQUIPPED WITH A STAND-BY SYSTEM |
FI113507B (en) * | 1989-03-07 | 2004-04-30 | Rca Licensing Corp | A burst mode sleeper power supply with sleep mode |
JPH0680385B2 (en) * | 1989-11-14 | 1994-10-12 | 三洋電機株式会社 | Showcase |
JP2902051B2 (en) * | 1990-05-23 | 1999-06-07 | シャープ株式会社 | Switching regulator for low output |
DE4021940A1 (en) * | 1990-07-10 | 1992-01-16 | Thomson Brandt Gmbh | SWITCHING POWER SUPPLY FOR A TELEVISION RECEIVER |
JP3281393B2 (en) * | 1991-09-13 | 2002-05-13 | ソニー株式会社 | Switching power supply |
-
1995
- 1995-06-21 JP JP7178235A patent/JPH099174A/en active Pending
-
1996
- 1996-04-03 KR KR1019960009949A patent/KR100225311B1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH099174A (en) | 1997-01-10 |
KR100225311B1 (en) | 1999-10-15 |
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PA0109 | Patent application |
Patent event code: PA01091R01D Comment text: Patent Application Patent event date: 19960403 |
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Comment text: Notification of reason for refusal Patent event date: 19981130 Patent event code: PE09021S01D |
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E701 | Decision to grant or registration of patent right | ||
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