switch on pc power supply
A digitally controlled switch mode power supply based on matrix converter
Ngày tải lên :
13/05/2014, 00:55
... output power. (2:
[5 A/div], 4: [125 V/div]).
124 IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 21, NO. 1, JANUARY 2006
A Digitally Controlled Switch Mode Power
Supply Based on Matrix Converter
Somnida ... efficiency.
In response to these concerns, this paper proposes a digitally
controlled switch mode power supply based on a matrix con-
verter for telecommunication applications (Fig. 2). Matrix con-
verter ... input
power factor with high total harmonic distortion (THD). In this
paper, a digitally controlled three-phase switch mode power supply
based on a matrix converter is proposed for telecommunication...
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Single phase uninterruptible power supply based on z source inverter
Ngày tải lên :
03/01/2014, 19:12
... a total of nine switching states and their
vector representations, where the switching function S
x
(x =
1, 2, 3, or 4) is defined as 1 when switch S
x
turns on and as
0 when switch S
x
turns ... operation, the rectifier provides power
0278-0046/$25.00 â 2008 IEEE
3002 IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, VOL. 55, NO. 8, AUGUST 2008
Fig. 9. Simulation results. (a) Traditional UPS ... transfer
function is
W
ou
(s)=W
u
(s)W
ci
(s)
1
sC
s
(20)
where W
u
(s) is the transfer function of the outer loop
controller.
The proportional–integral (PI) controller is adopted to con-
trol the...
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Your PC, Inside and Out: Chassis, Power supply and Motherboard
Ngày tải lên :
19/03/2014, 20:35
... PCIE connectors can also be powered using
2 molex connectors if one isn’t available from
the PSU itself, and molex to SATA power
connectors are also quite common.
SATA - This connector ... particularly common on older power
supplies, but as mentioned above it is
possible to get a converter cable.
Indeed, most budget cases still use this
design, and for good reason – it’s a
conventional, ... the more efficient the power
supply is the less AC power it requires to
provide sufficient DC power, meaning lower
overall power consumption from the mains
and a smaller power bill. The earth...
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Power Supply Units Guide.
Ngày tải lên :
01/11/2012, 16:38
... công suất trực tuyến để tìm
ra con số cần thiết ví dụ như:
- http://www.jscustompcs.com /power_ supply/
- http://www.mymp3car.com/MP3Car/PSUpower.asp
Trong thực thế, Khi đem một hệ
thống ... công suất khoảng 430w
vào bộ nguồn có chỉ số Continuous Power
là 400w, chúng vẫn có thể hoạt động
được trong khoảng thời gian ngắn nếu
mức Peak Power của nguồn đạt trên
430w nhưng sau một ... Pentium III hoặc Athlon XP).
- WTX: jack chính 24 chân, dùng cho Pentium II, III Xeon và Athlon MP.
- ATX 12V: jack chính 20 chân, dây phụ 4 chân 12v (Pentium 4 hoặc Athlon 64)
- EPS12v: jack...
- 13
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- 3
UPS (Uninterruptible Power Supply)
Ngày tải lên :
27/04/2013, 11:36
... Cách Test đơn giãn là dùng một điện trở tải (điện trở sứ trong các monitor
CRT hay tivi) chừng vài chục ôm và vài chục W. Kẹp song song với que đo
đồng hồ khi đo.
- Nếu mức sụt áp <= 5% là ... động bằng cách chập hai chân của nút power switch trên
mainboard bằng một chiếc tua-vít, chìa khóa hay bất cứ thứ gì có thể dẫn
điện. Nếu công tắc power switch của bạn bị hỏng và bạn không có ...
vhoạt động v cung cp ngun cho ti.
ã ON LINE: Inverter luụn hoạt động (on) cung cấp điện
cho tải.
UPS thông minh
ã c iu khin bi phn mm qua cng USB hoc
cng song song.
ã Cho phộp chn oỏn UPS Cho...
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Electronics - Digital Control of Switching Power Supply
Ngày tải lên :
27/10/2013, 16:15
... system parameters.
Digital Control of Switching Power Supply
- Power Factor Correction Stage
Sangsun Kim and Dr. P. Enjeti
Power Electronics and Power Quality Laboratory
Department ... IEEE 519 harmonic
limits.
II. Analog and Digital Control
Traditionally, the implementation of switching power supply has been accomplished by using
analog power factor correction (PFC) as ... Applications for Internal AC/DC Switching Power Supplies and
DC/DC Converters", APEC’00, pp. 59-63, 2000.
[3] P. C. Todd, “UC3854 Controlled Power Factor Correction Circuit Design,” Application...
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Tài liệu Power Supply Block Diagram ppt
Ngày tải lên :
13/12/2013, 23:15
... Notes on SwitchGeneral Notes on Switch Mode RegulatorMode Regulator
The duty cycle of the series transistor (power switch) determinesyy (p )
the average dc output of the regulator. A circuit to control ... R
s
constant. Since the voltage drop across R
s
is
constant V stays constant
H. Chan; Mohawk College
11
constant, V
o
stays constant.
Comparison of Different Types of RectifiersComparison of ... flow through C and D.
Basic PushBasic Push Pull Power ConverterPull Power Converter
Operates as a class D power amplifier. Output rectifier converts
the sq are a e to dc Each transistor m st...
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Tài liệu The Computer Case and Power Supply pptx
Ngày tải lên :
21/12/2013, 19:15
... Power Supply
Estimated time: 45 Minutes
Objective
In this lab, identify the type of computer case to be used, the form factor of the unit, and
the voltage selector switch on the power supply. ...
_______________
USB
Keyboard
Connector
_______
5-pin DIN or
________
6-pin mini DIN
_______
USB (Make sure it matches the connector on the Motherboard).
Power Supply
AT
__________
ATX ...
ISA
_____________
PCI
_____________
On Board
______________
Sound Card
Manufacturer:
__________
Model:
_______________
ISA
____________
PCI
____________
On Board
_____________
...
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Research on field weakening based on reactive power with BLDC motor for electric vehicle application
Ngày tải lên :
03/01/2014, 19:47
... BLDC motor using PWM control, the stator
winding is at unceasingly the power on and off condition
periodically, the air gap magnetic flux is weakened along
with the rotor position changing[8].
III. ... ON
REACTIVE POWER WITH
BLDC
MOTOR
The electrical machinery power is composed by the active
power and the reactive power[ 9]-[10]. In the static α − β
frame, the active power P
e
and reactive power ... reactive power;
I. INTRODUCTION
The electric vehicle(EV) is the cleanenergy saving and
environmental protection transportation vehicle, which hav-
ing no pollution, low heat radiation , the noise...
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asg 2 electrical power supply
Ngày tải lên :
15/02/2014, 08:33
... Electrical power supply architecture
2.4 Power supply functions
2. Electrical power
supply
6
2.4 Power supply functions
There are three separate functions:
b Supply and cut off the machine power ... Electrical power
supply
7
b Power unit supply
The table (C Fig. 5) summarises the power units and functions covering
the requisite functions.
2.5 Power supply to the control circuit
The power supply ... Electrical power
supply
3
1
2
3
4
5
6
7
8
9
10
11
12
M
2.1 Introduction Page
2.2 Power supply to machinery Page
2.3 Standards and conventions Page
2.4 Power supply functions Page
2.5 Power supply...
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the book report on the power and the glory by graham greene
Ngày tải lên :
21/03/2014, 22:53
... State Approval.
Graham GreeneOne day I gave The Power and the Glory to a native of
Mexico who had lived through the worst persecutions She confessed
that your descriptions were so vivid, your priest ... being
shot. After several months from the governor's office appeared a news,
that there was still one priest, Father Montez, who was moving from
village to village working on the Church by administering ... the priest. No one noticed the
irony, including the young lieutenant, who was more interested in
arresting the priest. When the officer received permission to look for
Father Montez, the priest...
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switching power supply of autonics guides
Ngày tải lên :
10/04/2014, 19:55
... tiếp và song song Chú ý khi sử dụng
Chú ý khi lắp đặt
Ngõ vào Ngõ ra Ngõ raNgõ vào
Kết nối song song Kết nối nối tiếp
Bộ nguồn ổn áp không được sử dụng kết nối nối tiếp và
song song trong bất ... nó với đầu nối khác thì mạch
bên trong sẽ bị hư hỏng.
Nó làm việc với 2000VAC giữa đầu nối và vỏ hộp trong
một phút, nhưng nó sẽ hư hỏng nếu quá áp được cấp trong
vài phút.
Bộ nguồn ổn áp có điện ... vào
Sản phẩm này không có giá trị để hoạt động theo dạng
điện áp ngõ ra song song và nối tiếp.
Dòng điện ngõ ra phải được sử dụng trong phạm vi dải
tỷ lệ. Khi nó hoạt động ở trạng thái quá dòng, quãng...
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brown, m. (1990). practical switching power supply design
Ngày tải lên :
18/04/2014, 12:25
... major power supply parame-
ters as
a
preliminary guide
at
the beginning
of
a switching power supply
4.3
Transformer-Isolated Switching Power
Supply
Topologies
29
As
in all power supply ...
0-12-137030-5 (alk. paper)
1.
Switching circuits l)esign and conslruclion. 2. Pswer
semiconductors-Design and construction.
3.
Semiconductor
switches-
-Design and construction.
1.
Title.
TK7868S9866 ...
Transformer-Isolated Switching Power Supply Topologies
37
ing secondary rectifier conducts.
So
each power switch and rectifier
op-
erates at half the power supply operating frequency, but
the
switching...
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brown, m. (2001). power supply cookbook (2nd ed.)
Ngày tải lên :
18/04/2014, 12:28
... the environment in which the power supply must operate. This then forms
the basis of the design specification of the power supply.
1.2 Power System Organization
The organization of the power system ... pk on
out in off
()
=-
-
()
◊
()
3.1 The Fundamentals of PWM Switching Power Supplies 25
Switch Voltage
(V)
Inductor Current
(Amps)
Power
Switch
ON
V
in
V
sat
Diode
ON
V
flbk
(
V
out
)
Power
Switch
ON
Diode
ON
time
time
I
pk
I
min
Figure ... a power supply. By presenting intuitive descriptions of the
power supply system’s operation along with commonly used circuit approaches,
it is designed to help anyone with a working electronics...
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