Thông tin thiết kế mạch P2 potx

Ứng dụng công nghệ thông tin, thiết kế bài lên lớp nhằm nâng cao chất lượng dạy và học bộ môn hóa học ở trường Trung học cơ sở

... ỨNG DỤNG CÔNG NGHỆ THÔNG TIN, THIẾT KẾ BÀI LÊN LỚP NHẰM NÂNG CAO CHẤT LƯỢNG DẠY VÀ HỌC BỘ MÔN HÓA HỌC Ở TRƯỜNG TRUNG HỌC CƠ SỞ” Chuyên ngành : Lí luận và phương pháp dạy học bộ môn hóa ... tài: Ứng dụng công nghệ thông tin thiết kế bài lên lớp nhằm nâng cao chất lượng dạy và học bộ môn hóa học ở trường THCS”. 2. Mục đích nghiên cứu Thiết kế bài lên lớp thuộc chương trình lớp ... tôi nghiên cứu cơ sở lý luận của bài lên lớp, cấu trúc bài lên lớp, các thành tố và mối liên hệ giữa các thành tố của bài lên lớp, các kiểu bài lên lớp khi dạy bộ môn hóa học ở trường THCS....

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Giáo án - Bài giảng học tập công nghệ thông tin: thiết kế mạng lan quy mô lớn

... E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area * - candidate default, U - per-user static route, o - ... trên. Default VLAN VLAN 1 còn được gọi là default VLAN. Chính vì vậy, mặc định, native VLAN, management VLAN và user VLAN sẽ là thành viên của VLAN 1. Thiết kế mạng LAN quy mô lớn Lương Khôi ... KHB(config-if)#switchport access vlan 30 KHB(config-if)#exit ! Kết quả: Từ Ping đến Kết quả VLAN 20 û VLAN 30 ü VLAN 10 ISP ü VLAN 10 û VLAN 30 û VLAN 20 ISP ü VLAN 10 ü VLAN...

giáo án điện tử công nghệ: hướng dẫn thiết kế mạch điện potx

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Thông tin thiết kế mạch P2 potx

... some property of acontinuous sinusoidal high-frequency source in accordance with speech, then theprospects for effective communication through free space become a distinctpossibility. Changing ... werestrict each transmitter to one speciﬁc frequency (that is, continuous sinusoidalwaveforms) then interference can be avoided by incorporating a narrow-band ﬁlter atthe receiver to eliminate all ... from approximately 100 Hz to approximately 5 kHzand a range of amplitudes starting from a whisper to very loud shouting. An attemptto propagate speech in free space comes up against two very...

Thông tin thiết kế mạch P3 docx

... Repeat the design using the device whose characteristics are given in Figure P3. 2.3.8 Using the device of Figure P3. 1, design a transformer coupled class-Aampliﬁer to operate at 500=2p kHz ... 1978.PROBLEMS3.1 An AM receiver is tuned to 1000 kHz but two other stations (the ﬁrst operatingat 1010 kHz and the second operating at 1200 kHz) are causing interference.The intermediate frequency of the ... some ofthe power present in the wave and hence it will be acting as a receiver antenna.However, other electromagnetic waves emanating from all other radio transmitterswill also induce some...

Thông tin thiết kế mạch P5 doc

... amplitude of the modulating signal. Infrequency modulation, the amplitude of the carrier is kept constant and its frequencyis changed in accordance with the amplitude of the modulating signal. It ... is given byvðtÞ¼12b½cosðocÀ omÞt À cosðocþ omÞt P5: 1Þwhere ocis the carrier angular frequency and omis the modulating signalangular frequency.What do you need to demodulate ... relative directions of the primary and secondarywindings. Assuming the positive sign and substituting for I12V2¼MV1L1: ð5:2:3ÞSince the secondary circuit is tuned to resonance, the secondary...

Thông tin thiết kế mạch P6 doc

... Design such a circuit and estimateits bandwidth using the hybrid-p model given in Figure P6. 1.Figure P6. 1.Calculate the value of an inductor that, when connected in series with the collectorload ... the electrons on arrival at the target, asecond ring of graphite coating, called the decelerator grid, is provided. By adjustingthe voltages on the accelerator anode and the decelerator grid, ... Communications Commission (FCC) and it hassince been adopted as a standard by television broadcasting authorities in manyFigure 6.23. The relative sensitivity of the human eye to the wavelength...

Thông tin thiết kế mạch P7 docx

... clear that, by depositing thedifferent phosphors materials in dots grouped in threes at the appropriate points onthe screen, the different colors can be reproduced by modulating the relativesaturation ... operation, this circuit does not consume muchpower, neither is there a large reactive power circulating in the circuit.7.2.7.5 Horizontal Deflection System. From Figure 7.3, it can be seen thatthe ... flare asshown and requires several thousand volts positive for proper operation. The screenis coating with silicates, sulfides, fluorides and alkali halides which emit light whenbombarded by electrons....

Thông tin thiết kế mạch P8 pot

... ﬁnger wheel is rotating in the clockwise direction, the lever Xis free to move out of the way of the cam lobes without disturbing the switch lever Y.When the wheel assembly is rotating in the counter-clockwise ... oscillating frequency if the oscillator is designed to operate at thefrequency of the null. However, using the classical twin-tee values of Rs and Csinoscillator design will be self-defeating ... Figure 8.36.The switches are either connected to the inverting input of the ampliﬁer or theyare connected to ground but the inverting input is a virtual ground so the resistivenetwork can...

Thông tin thiết kế mạch P9 doc

... shown in Figure P9. 1.where the mark-to-space ratio is 1. Derive an expression for the PAMwaveform given that, for a square wave,f ðtÞ¼12þ2pP1n¼11nsin not: P9: 5ÞFigure P9. 1.302 SIGNAL ... the positivedirection by D2acting as an ordinary diode and D1acting as a Zener diode. Theirroles are reversed when the output voltage goes negative. The resulting square waveoutput goes to ... from signals in the channel canhave a pattern of alternating bits from frame to frame.The incoming pulses are scanned for the alternating bit in the 193rd position, andwhen it is found the...

Thông tin thiết kế mạch P10 potx

... receive machine then sends back a code indicating that the message wassuccessfully received.12. The send machine goes back ‘‘ on-hook,’’ terminating the call.13. The receive machine also goes ... pels must be printed in less than 27 ms. The temperature ofthe resistors have to reach their operating value and drop down (low enough not tocause a smudge on the line below it) in much less time.As ... The receive machine goes ‘‘off-hook’’ (connects itself to the line) and sends a2.1 kHz signal lasting approximately 3 s to the send machine to identify itselfas a fax machine.4. The receive machine...

Thông tin thiết kế mạch P11 ppsx

... number of chips representing a message bit (1 or 0) is large,the correlation does not have to be perfect; it has to correctly recognize the majorityof the chips as representing that message bit ... Film Bulk AcousticResonator (FBAR). Ceramic RF duplexers are considered to have superior operatingcharacteristics compared to SAW devices but they are, in general, bulkier. FBAR is anew technology ... them. Equally, they produce anelectric ﬁeld when they are deformed mechanically. When an alternating voltage isapplied to the input electrode, it causes a mechanical deformation on the surface...

Thông tin thiết kế mạch P12 pptx

... of reliability.To avoid the complexity of tracking the satellite from rising to setting and tomaintain continuous communication, it is best to ‘‘park’’ the satellite at a pointdirectly above ... in Figure P12. 1, assuming that the operational ampliﬁer is ideal. How can this circuit beused to improve the transmission characteristics of the twisted-pair or coaxialcable?Figure P12. 1.12.3 ... adaptively controlled to correct for changes in temperature andother operating conditions.Coaxial cable is used for transmitting data at 274.176 Mbit=s in the LD-4 (Bell-Canada) and T4M (Bell System...

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