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Abstract: This application note discusses a design for a phantom antenna power-supply system compatible with theDigital Satellite Equipment Control (DiSEqC) communication standard, using the MAX16948 automotive dual, highvoltageLDO/switch. The presented application circuit provides a remote antenna power supply and also enables onewaycommunication from the radio head unit to the remote antenna. This system architecture offers flexibility inDiSEqC tone-burst frequency choice (100Hz to 30kHz), enabling users the ability to select the best frequency for theirapplication.
標簽：
數字衛星
控制
兼容
供電系統設計
上傳時間：
2013-11-17
上傳用戶：fnhhs
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微電腦型單相交流集合式電表（單相二線系統） 特點： 精確度0.25%滿刻度±1位數 可同時量測與顯示交流電壓,電流,頻率,瓦特,(功率因數/視在功率) 交流電壓,電流,瓦特皆為真正有效值(TRMS) 交流電流,瓦特之小數點可任意設定 瓦特單位W或KW可任意設定 CT比可任意設定(1至999) 輸入與輸出絕緣耐壓 2仟伏特/1分鐘( 突波測試強度4仟伏特(1.2x50us) 數位RS-485界面 (Optional) 主要規格： 精確度: 0.1% F.S.±1 digit (Frequency) 0.25% F.S.±1 digit(ACA,ACV,Watt,VA) 0.25% F.S. ±0.25o(Power Factor) (-.300~+.300) 輸入負載: <0.2VA (Voltage) <0.2VA (Current) 最大過載能力: Current related input: 3 x rated continuous 10 x rated 30 sec. 25 x rated 3sec. 50 x rated 1sec. Voltage related input: maximum 2 x rated continuous 過載顯示: "doFL" 顯示值范圍: 0~600.0V(Voltage) 0~999.9Hz(Frequency)(<20% for voltage input) 0~19999 digit adjustable(Current,Watt,VA) 取樣時間: 2 cycles/sec. RS-485通訊位址: "01"-"FF" RS-485傳輸速度: 19200/9600/4800/2400 selective RS-485通信協議: Modbus RTU mode 溫度系數: 100ppm/℃ (0-50℃) 顯示幕: Red high efficiency LEDs high 10.16 mm(0.4") 參數設定方式: Touch switches 記憶型式: Non-volatile E²PROM memory 絕緣抗阻: >100Mohm with 500V DC 絕緣耐壓能力: 2KVac/1 min. (input/output/power) 1600 Vdc (input/output) 突波測試: ANSI c37.90a/1974,DIN-IEC 255-4 impulse voltage 4KV(1.2x50us) 使用環境條件: 0-50℃(20 to 90% RH non-condensed) 存放環境條件: 0-70℃(20 to 90% RH non-condensed) CE認證: EN 55022:1998/A1:2000 Class A EN 61000-3-2:2000 EN 61000-3-3:1995/A1:2001 EN 55024:1998/A1:2001
標簽：
微電腦
單相交流
單相
電表
上傳時間：
2015-01-03
上傳用戶：幾何公差
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要生產音頻脈沖，只要算出某一音頻的周期(1/頻率)，可以利用定時器計時的方式得到此頻率的脈沖。而Arduino平臺“封裝”了新的數字輸出函數tone()。更簡易的實現喇叭和蜂鳴器唱歌。
tone(pin, frequency)，Arduino會向指定pin發送制定頻率的方波，執行noTone()函數來停止。
tone(pin, frequency, duration方法多了一個參數，代表發送方波持續的時間，到時自動停止發送信號，就不需要noTone()函數。
利用tone()函數播放音樂，只需要查表了解各個音符對應的頻率，還要求個人稍微能看懂音樂譜子的節拍。
物料清單 ：
Arduino 328控制板 1塊
8Ω 0.5W的喇叭（或者蜂鳴器） 1個（ATmega328的驅動能力足夠，直接拉電流就ok!）
12Ω電阻(限流) 1個
實物圖：
標簽：
Arduino
328
控制板
制作音樂
上傳時間：
2013-10-14
上傳用戶：jiangxiansheng
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Locally weighted polynomial regression LWPR is a popular instance based al gorithm for learning continuous non linear mappings For more than two or three in puts and for more than a few thousand dat apoints the computational expense of pre dictions is daunting We discuss drawbacks with previous approaches to dealing with this problem
標簽：
polynomial
regression
weighted
instance
上傳時間：
2013-11-28
上傳用戶：sunjet
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遺傳算法(Genetic Algorithm, GA)是近幾年發展起來的一種嶄新的全局優化算法，它借
用了生物遺傳學的觀點，通過自然選擇、遺傳、變異等作用機制，實現各個個體的適應性
的提高。這一點體現了自然界中"物競天擇、適者生存"進化過程。1962年Holland教授首次
提出了GA算法的思想，從而吸引了大批的研究者，迅速推廣到優化、搜索、機器學習等方
面，并奠定了堅實的理論基礎。 用遺傳算法解決問題時，首先要對待解決問題的模型結構
和參數進行編碼，一般用字符串表示，這個過程就將問題符號化、離散化了。也有在連續
空間定義的GA(Genetic Algorithm in Continuous Space, GACS)，暫不討論。
標簽：
Algorithm
Genetic
GA
算法
上傳時間：
2015-06-08
上傳用戶：stampede
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BNB20 Finds the constrained minimum of a function of several possibly integer variables.
％ Usage: [errmsg,Z,X,t,c,fail] =
％ BNB20(fun,x0,xstatus,xlb,xub,A,B,Aeq,Beq,nonlcon,settings,options,P1,P2,...)
％
％ BNB solves problems of the form:
％ Minimize F(x) subject to: xlb <= x0 <=xub
％ A*x <= B Aeq*x=Beq
％ C(x)<=0 Ceq(x)=0
％ x(i) is continuous for xstatus(i)=0
％ x(i) integer for xstatus(i)= 1
％ x(i) fixed for xstatus(i)=2
％
標簽：
constrained
variables
function
possibly
上傳時間：
2014-01-13
上傳用戶：youth25
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Streaming refers to the ability of an application to play synchronised media streams like audio and video streams in a continuous way while those streams are being transmitted to the client over a data network.
標簽：
synchronised
application
Streaming
ability
上傳時間：
2015-10-22
上傳用戶：athjac
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Boosting is a meta-learning approach that aims at combining an ensemble of weak classifiers to form a strong classifier. Adaptive Boosting (Adaboost) implements this idea as a greedy search for a linear combination of classifiers by overweighting the examples that are misclassified by each classifier. icsiboost implements Adaboost over stumps (one-level decision trees) on discrete and continuous attributes (words and real values). See http://en.wikipedia.org/wiki/AdaBoost and the papers by Y. Freund and R. Schapire for more details [1]. This approach is one of most efficient and simple to combine continuous and nominal values. Our implementation is aimed at allowing training from millions of examples by hundreds of features in a reasonable time/memory.
標簽：
meta-learning
classifiers
combining
Boosting
上傳時間：
2016-01-30
上傳用戶：songnanhua
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From helping to assess the value of new medical treatments to evaluating the
factors that affect our opinions and behaviors, analysts today are finding
myriad uses for categorical data methods. In this book we introduce these
methods and the theory behind them.
Statistical methods for categorical responses were late in gaining the level
of sophistication achieved early in the twentieth century by methods for
continuous responses. Despite influential work around 1900 by the British
statistician Karl Pearson, relatively little development of models for categorical
responses occurred until the 1960s. In this book we describe the early
fundamental work that still has importance today but place primary emphasis
on more recent modeling approaches. Before outlining
標簽：
evaluating
treatments
the
helping
上傳時間：
2014-01-25
上傳用戶：jennyzai
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Of the password is:
Server: "1."
Client: + for the month of the date of the machine. Such as "2005/08/05", compared with the number "85"
Database: "xzxq".
I made the changes:
1, stations and customer-service once every 30 seconds to exchange information (to ensure continuous line)
2, computer services-an increase of the serial number
3, client-service to send the card serial number and send IP addresses to the service side
4, the desktop client by the embargo, since the definition of the icon to start the process faster (from the window Superman Code)
5, CS-shielding some function keys, but CTRL + ALT + DEL keys can not shield the hope that a revised modify these friends
6, there are some corners of Laws (such as title, etc.).
Client desktop icon in the Settings page set up first class to enter FXZWN999 open on to add, delete icon button
標簽：
the
password
machine
Client
上傳時間：
2016-06-27
上傳用戶：xsnjzljj
