lò vi sóng có nướng 30l electrolux ems3047x
Tài liệu Đã có cách làm brownie bằng lò vi sóng rồi đây! doc
Ngày tải lên :
21/01/2014, 00:20
... thì măm măm luôn thôi!
Đã có cách làm brownie bằng lò vi sóng rồi đây!
Một loại bánh với hương thơm thật quyến rũ của chocolate… và chỉ mất 6’ cho vi c
nướng bánh thôi các bạn ạ!
Chuẩn...
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Sử dụng lò vi sóng
Ngày tải lên :
17/09/2013, 20:10
... - 10:06 AM
Lò nấu vi sóng
Lò Vi sóng (Microwave oven - sóng cực ngắn) hiện nay đã ngự trị trong bếp của nhiều gia
đình cũng như tại công sở, trường học…. Dân giầu có thì sắm một lò gắn vào tường ... chạy lò khi không có thực phẩm trong lò.
- Luôn luôn có nước hoặc thực phẩm ướt khi dùng lò, để tránh cho
ống magnetron khỏi bị hư hao.
- Khi món ăn quá khô, có thể để một ly nước trong lò. ... fries) trong lò vì chất béo quá nóng
gây cháy.
- Tránh mọi hư hao cho cửa lò như đè lên cửa hoặc nhấc lò lên
bằng cánh cửa lò.
- Vài năm kiểm tra lò một lần coi có bị thất thoát sóng ra ngoài.
-...
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Microstrip bộ lọc cho các ứng dụng lò vi sóng RF (P1)
Ngày tải lên :
24/10/2013, 16:15
... wavelengths between 1 m
(10
–6
m) and 1 mm. Beyond the infrared spectrum is the visible optical spectrum,
the ultraviolet spectrum, and x-rays. Below the microwave frequency spectrum is
the radio ... tuning. Here the costs for the design and tuning can be reduced greatly by using
CAD, which can provide more accurate design with less design iterations, leading to
first-pass or tuneless filters. ... developments in this area are cer-
tainly being stimulated by increasing computer power. Another driving force for the
developments is the requirement of CAD for low-cost and high-volume production.
In...
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Microstrip bộ lọc cho các ứng dụng lò vi sóng RF (P2)
Ngày tải lên :
24/10/2013, 16:15
... ports of the network NЈЈ ; and all the S submatrices con-
tain the corresponding S parameters. Obviously, p + c = M
1
and q + c = M
2
. It is
[aЉ]
q
[aЉ]
c
[SЉ]
qc
[SЉ]
cc
[SЉ]
qq
[SЉ]
cq
[bЉ]
q
[bЉ]
c
[aЈ]
p
[aЈ]
c
[SЈ]
pc
[SЈ]
cc
[SЈ]
pp
[SЈ]
cp
[bЈ]
p
[bЈ]
c
b
i
ᎏ
a
j
a
1
a
2
Ӈ
a
M
S
1M
S
2M
Ӈ
S
MM
... at port 2 of the network NЈ and port 1 of the network N Љ
when SЈ
mn
and SЉ
mn
are evaluated individually.
2.8 NETWORK PARAMETER CONVERSIONS
From the above discussions it can be seen that for ... composite
network is given simply by the sum of the short-circuit admittance matrices of the
individual networks.
Analogously, the networks of Figure 2.3(b) are connected in series at both their
input...
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Microstrip bộ lọc cho các ứng dụng lò vi sóng RF (P3)
Ngày tải lên :
28/10/2013, 23:15
... the same 3 pole
Butterworth lowpass prototype as that used previously in Section 3.3.1, Figure
3.15(b) illustrates a bandpass having a passband from 1 to 2 GHz obtained using the
element transformation.
3.3.4 ... = 1 to n (3.24)
g
n+1
= 1.0
For convenience, Table 3.1 gives element values for such filters having n = 1 to 9.
As can be seen, the two-port Butterworth filters considered here are always sym-
metrical ... be chosen.
3.2.2 Chebyshev Lowpass Prototype Filters
For Chebyshev lowpass prototype filters having a transfer function given in (3.9)
with a passband ripple L
Ar
dB and the cutoff frequency...
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Microstrip bộ lọc cho các ứng dụng lò vi sóng RF (P4)
Ngày tải lên :
28/10/2013, 23:15
... previous expressions for
re
are
obtained based on the quasi-TEM or quasistatic approximation, and therefore are
rigorous only with DC. At low microwave frequencies, these expressions provide ... expressions also provide accuracy better than one percent. If more accurate
values are needed, an iterative or optimization process based on the more accurate
analysis models described previously can ... 4.10(h).
These microstrip patch resonators can be analyzed as waveguide cavities with mag-
netic walls on the sides. The fields within the cavities can be expanded by the
TM
Z
nm0
modes, where z is perpendicular...
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Microstrip bộ lọc cho các ứng dụng lò vi sóng RF (P5)
Ngày tải lên :
07/11/2013, 21:15
... Semilumped Lowpass Filters Having Finite-Frequency
Attenuation Poles
The previous two types of microstrip lowpass filter realize the lowpass prototype
filters having their frequencies of infinite ... (b)
can only be electrically equivalent to the combline filter in the vicinity of the mid-
band frequency, and its stopband behavior is different from that of the combline fil-
ter.
Similar to the ... inductances L
1
, L
3
, and L
5
block transmission by
having infinite series reactance, whereas the capacitance C
6
shorts out transmission
by having infinite shunt susceptance.
A microstrip filter...
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Microstrip bộ lọc cho các ứng dụng lò vi sóng RF (P6)
Ngày tải lên :
07/11/2013, 21:15
... design this type of filter, let us consider the design of an op-
timum distributed highpass filter having a cutoff frequency f
c
= 1.5 GHz and a 0.1
dB ripple passband up to 6.5 GHz. Referring to Figure ... = 1 to n
where b
i
are the susceptance slope parameters of series parallel resonators.
It is obvious that for a chosen lowpass prototype, with known element values, the
desired reactance/susceptance ... relative dielectric constant of 10.8 and a thickness of 1.27
mm. The bandstop filter is designed to provide an RF rejection better than 40 dB
over an operating frequency band from 3.5 GHz to 5.5 GHz....
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Microstrip bộ lọc cho các ứng dụng lò vi sóng RF (P7)
Ngày tải lên :
07/11/2013, 21:15
... (MEMS) provide a class of new devices and com-
ponents which display superior high-frequency performance and enable new system
capabilities. For a general definition, a MEMS is a miniature device ... ability to effectively improve filter selectivity. Therefore, it does not
constitute a particularly attractive choice for achieving frequency selectivity. Never-
theless, it may be of interest ... production. The change in permittivity as a func-
tion of electric field is the key to a wide range of applications.
Frequency-agile filters are among many other device applications of ferro-
electrics....
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Tài liệu Microstrip bộ lọc cho các ứng dụng lò vi sóng RF (P8) doc
Ngày tải lên :
15/12/2013, 06:15
... of S
11
in (8.76)
is always equal to 1. This is because in the vicinity of resonance, the parallel res-
onator of Figure 8.11 behavior likes an open circuit. However, the phase response of
S
11
changes ... of
Kirchhoff’s two circuit laws and states that the algebraic sum of the currents leaving
a node in a network is zero, with a driving or external current of i
s
the node equa-
tions for the circuit of Figure ... resonator
Y
in
= j
C + = j
0
C
–
(8.74)
Note that
0
= 1/͙L
ෆ
C
ෆ
is the resonant frequency. In the vicinity of resonance, say,
=
0
+ ⌬
, (8.74) may be simplified as
Y
in
= j
0
C· (8.75)
where...
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