full bridge converter topology q1 and q4 on

Thiết kế bộ sặc ắc quy dùng bộ biến đổi DC – DC là bộ biến đổi cầu (full bridge converter) docx

Ngày tải lên : 03/04/2014, 20:20

... đổi Push – pull converter mostfet phải chịu điện áp ngược lớn gấp 2,6VDC cỡ 1000V đắt tiền khó tìm kiếm thị trường Còn sử dụng biến đổi Half – Bridge converter mosfet mạch full – bridge thay tụ ... side Q1 Q2 trạng thái làm việc đối nghịch Khi Q1 trạng thái On Q2 trạng thái Off ngược lại Q1 trạng thái Off chuyển sang trạng thái On chân S Q1 chuyển từGround sang điện áp cao Do muốn kích Q1 ... hoạt động thụ động, chúng bị thay acquy Li-ion - Acqui Li-ion Acquy Li-ion giới thiệu vào đầu năm 1990, sử dụng oxit Liti để làm cực dương Liti Cacbon để làm cực âm, dung dịch điện phân dung dich...

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Báo cáo khoa học: A novel transmembrane topology of presenilin based on reconciling experimental and computational evidence pptx

Ngày tải lên : 23/03/2014, 13:20

... regions six and seven This topology has recently been veriﬁed experimentally [30] When comparing the performance of topology prediction methods and low-resolution experiments (such as gene fusion ... experimental data on PSs Determining their topology is critical for understanding their normal and pathogenic functions However, the ultimate solution to the topology of PSs can only be achieved ... limitations of low-resolution experiments In this study we have used computational prediction methods to analyze PS topology, and have combined these results with previous data from low-resolution...

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Đề tài " Curve shortening and the topology of closed geodesics on surfaces " potx

Ngày tải lên : 29/03/2014, 07:20

... intervals on which one can construct local continuations, so that a ﬁnite number of such local continuations will take one from θ = to θ = We will therefore now describe the construction of the ... CURVE SHORTENING AND GEODESICS 1207 for certain constants c± (θ), at least one of which is nonzero If one of these constants vanishes then ϕθ is again a solution of Hill’s equation and therefore ... relative ﬂat knot and the nonresonance condition Let Γ = {γ1 , , γN } ⊂ Ω be a collection of curves with no mutual CURVE SHORTENING AND GEODESICS 1191 or self-tangencies, and denote by MΓ the...

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The effects of clay a m e n d m e n t and composting on metal speciation in digested sludge liang qiao

Ngày tải lên : 23/09/2012, 14:47

... represents one standard deviation) Metal speciation of digested sludge 953 Table I The effect of factoring in the dilution by red mud addition on total metal content in sludge compost and the metal content ... greater effect on Cr, Pb and Zn speciation than on Cu and Ni speciation More than 80% of Cu is tightly bound to the organic fraction, and red mud addition hardly affects the Cu speciation (ii) Although ... decomposition took place A change in redox condition and solid/solution ratio therefore occurred Red mud has a high pH, cation exchange capacity, AI and Fe oxides and clay minerals and can effectively...

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A comparative study of criticism between american and vietnamese online newspapers

Ngày tải lên : 07/11/2012, 14:44

... culture consists of traditional ideas and especially their attached values; culture systems may, on the other hand, be considered as products of action, on the other hand as conditioning elements ... qualification can easily understand 2.4.3.4 Conciseness Language in newspapers should be short and brief Long expression can make the information dilute, which causes bad effect on the reception of ... criticism when expressing their point of view This, on one hand, reduces negative reactions; and, on the other hand, the information becomes more vivid and interesting to readers Ways of expressing...

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A study on the opportunities for and constraints on developing students’ oral skills at an upper-secondary school

Ngày tải lên : 07/11/2012, 14:44

... 1990) which consist of a number of specific and defined questions determined beforehand, and allow some elaboration in questions and answers After the questionnaires and class observations, two interviews ... communication and require the use of such communicative processes as information sharing, negotiation of meaning, and interaction” (Richard and Rodgers, 1986: 165) In conclusion, speaking skill is one ... fluency and accuracy Conclusion Teaching and learning speaking skill at Upper-Secondary Schools are considered problematic In this study with the title “A study on the opportunities for and constraints...

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Tài liệu Quản trị mang Subnet Zero and All-Ones Subnet

Ngày tải lên : 13/11/2012, 11:22

... Zero and the All−Ones Subnet Introduction Subnet Zero The All−Ones Subnet Problems with Subnet Zero and the All−Ones Subnet Subnet Zero The All−Ones Subnet Using Subnet Zero and the All−Ones ... IOS version 12.0, subnet zero could be used by entering the ip subnet−zero global configuration command Subnet Zero and the All−Ones Subnet On the issue of using subnet zero and the all−ones subnet, ... (bits 17, 18, and 19 in this case) are ones, hence the name Problems with Subnet Zero and the All−Ones Subnet Traditionally, it was strongly recommended that subnet zero and the all−ones subnet...

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CURRENT VIETNAMESE LAWS AND REGULATIONS ON ENVIRONMENTAL PROTECTION

Ngày tải lên : 13/04/2013, 10:32

... Standardization, Metrology, and Quality Control is the pioneer in environmental protection and considered as the main state’s body responsible for providing guidelines, training, consultation and ... relationship between socio-economic development and environmental protection;  Conflicts arising in the course of socio-economic development among economic activities, the quality of life and long-term ... international obligations, such as the conventions on climate change, conservation of biodiversity and ozone depletion which were signed by Vietnam; • Details of EIA procedures; 20 • The organization...

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Effect of dissolved organic matter (DOM) and biofilm on the adsorption capacity of powdered activated carbon in activated sludge

Ngày tải lên : 05/09/2013, 08:40

... Carbon/amount of PAC ( mg g-1) adsorption capacity of PAC does not totally due to the adsorption of DOM on PAC 10 AC AC AC AC PAC on P on P on P on P ion ion tion New tion ba ba bat bat incu incu incu ... compared to the new one Figure shows 3,5-DCP concentrations in the PACT and the control reactors during and after the shock loading of 3,5-DCP The peak concentration in the PACT and the control reactors ... glucose concentration of 1000mg l-1 The incubation was defined as incubation from addition of glucose until DOC concentration in the medium was zero For biofilm developed on PAC, the incubation was...

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INFLUENCE OF NITROGEN, ACETATE AND PROPIONATE ON HYDROGEN PRODUCTION FROM PINEAPPLE WASTE EXTRACT BY Rhodospirillum rubrum

Ngày tải lên : 05/09/2013, 09:08

... propionate concentration of 5, 10 and 20 mM For each concentration of acetate or propionate, ammonium sulfate ((NH4)2SO4) was added to obtain total nitrogen concentrations of and 11 mM Fermentation ... Water and Environment Technology, Vol.3, No.1, 2005 Effect of nitrogen levels and initial propionate concentrations Continuous illumination The effect of nitrogen levels and initial propionate concentrations ... might be consumed to produce hydrogen and resulted to butyrate and acetate production (Figures 1, 2) Figures and illustrated a reduction of glucose concentration and an increase of acetate and butyrate...

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Configuring Kerberos and NTP on Ubuntu Server

Ngày tải lên : 19/10/2013, 02:20

... completed and you have a basic working configuration In the next section you’ll read how to tune this configuration Configuring the Kerberos Server There are two configuration files involved in configuring ... you need to create a link to the configuration file that contains information on your local time zone You can find these configuration files in C HA P TER 13 C ONF I G U R I N G K E R B E R O S ... server: , which contains generic Kerberos configuration settings, and , in which you’ll find the configuration of the KDC In this section, you’ll first tune these two Kerberos configuration files After...

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21 STUPIDLY SIMPLE WAYS TO GET MORE LIKES AND COMMENTS ON YOUR FACEBOOK PAGE

Ngày tải lên : 19/10/2013, 19:16

... Reply and pay attention – People skills 101 talks about acknowledging someone when they answer a question When your fans answer questions, comment back and deepen the conversation Example questions ... MISSION, AND DEVELOP RELATIONSHIPS THAT HELP TO ACQUIRE AND MAINTAIN DONORS, VOLUNTEERS, AND PASSIONATE SUPPORTERS SAVE 15% WITH THE FOLLOWING DISCOUNT CODE: 21WAYS JOHN HAYDON ADVISES NON-PROFITS ... CharityHowTo.com publication by John Haydon Click to Share on Twitter ABOUT CHARITYHOWTO AND JOHN HAYDON CHARITYHOWTO WEBINARS HELP NONPROFITS UTILIZE SOCIAL MEDIA AND TECHNOLOGY TO ENGAGE THEIR CONSTITUENCY,...

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Spreading Timeshifted TV Watching and Expanding Online-Video Viewing

Ngày tải lên : 01/11/2013, 14:44

... demand" was watched by 3% of online video viewers, "Fuji Television On Demand" and "TBS on demand" by 2% respectively and "Dai2 Nippon Television", "Tereasa Douga (TV Asahi)" and "Anitere Siataa (TV ... "PANDORA.TV", "AmebaVision" (2) Video distribution sites (10 sites) "GyaO!", "NHK on demand", "Dai2 Nippon Television", "Fuji Television On Demand", "TBS on demand", "Tereasa Douga", "Anitere Siataa", ... the connections If we take all respondents as the denominator, only 4% of people use such connections, showing that such usage remains uncommon among the Japanese population Figure 19 Connecting...

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Create and Execute On-the-Fly Batch Updates by Using ADO.NET

Ngày tải lên : 07/11/2013, 15:15

... ocmdPhoneUp.CommandType = CommandType.Text 13 14 ' Open the connection object 15 ocnn.Open() 16 17 Me.txtRecsAffected.Text = ocmdPhoneUp.ExecuteNonQuery.ToString 18 19 Catch excpData As Exception ... command is instantiated in this case, the string in the txtSQL text box is passed as the CommandText The CommandType is set as CommandType.Text The connection is then open Finally, the command ... ByVal e As System.EventArgs) Handles btnExecute.Click Dim ocnn As New OleDb.OleDbConnection(BuildCnnStr("(local)", "Northwind")) Dim ocmdPhoneUp As New OleDb.OleDbCommand(Me.txtSQL.Text, ocnn) 10...

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A discourse analysis of advertisements in english and vietnamese on the internet

Ngày tải lên : 26/11/2013, 13:29

... code and when the language is used to speak about language (52) Who looks out for long island business? The long Island Association The long Island Association Advocacy Networking Benefits LIA Long ... function, there was a correlation 4.4.1 Application of Communication Functions in Advertisements between referential and conative function in English ads Vietnamese on the Internet ads normally concentrated ... brand’s name and image to the public 4.1.2 Expressive Function Factors in Advertisements The second function refers to the addresser and his or her emotions Among such elements are interjections,...

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CEHv6 module 51 hacking and cheating online games

Ngày tải lên : 26/12/2013, 21:07

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Tài liệu Dual Full - Bridge Driver doc

Ngày tải lên : 20/01/2014, 02:20

... stage is a bridge configuration Turn -On and Turn-Off : Before to Turn -ON the Supand its outputs can drive an inductive load in comply Voltageand beforeto Turnit OFF, the Enableinmon or differenzialmode, ... bridge A (enable A) and/ or the bridge B (enable B) TTL Compatible Inputs of the Bridge B Outputs of the Bridge B The current that flows through the load connected between these two pins is monitored ... implication or otherwise under any patent or patent rights of STMicroelectronics Specification mentioned in this publication are subject to change without notice This publication supersedes and replaces...

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Tài liệu create and Execute On-the-Fly Batch Updates by Using ADO.NET docx

Ngày tải lên : 21/01/2014, 12:20

... ocmdPhoneUp.CommandType = CommandType.Text 13 14 ' Open the connection object 15 ocnn.Open() 16 17 Me.txtRecsAffected.Text = ocmdPhoneUp.ExecuteNonQuery.ToString 18 19 Catch excpData As Exception ... command is instantiated in this case, the string in the txtSQL text box is passed as the CommandText The CommandType is set as CommandType.Text The connection is then open Finally, the command ... ByVal e As System.EventArgs) Handles btnExecute.Click Dim ocnn As New OleDb.OleDbConnection(BuildCnnStr("(local)", "Northwind")) Dim ocmdPhoneUp As New OleDb.OleDbCommand(Me.txtSQL.Text, ocnn) 10...

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