交流電壓，電流轉(zhuǎn)換器 特點(diǎn)： 精確度0.25%滿刻度(RMS) 多種輸入,輸出選擇 輸入與輸出絕緣耐壓2仟伏特/1分鐘 沖擊電壓測(cè)試5仟伏特(1.2x50us) (IEC255-4,ANSI C37.90a/1974) 突波電壓測(cè)試2.5仟伏特(0.25ms/1MHz) (IEC255-4) 尺寸小，穩(wěn)定性高 2:主要規(guī)格 精確度:0.25%F.S.(RMS) (23 ±5℃) 輸入負(fù)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 2x rated continuous 輸出反應(yīng)時(shí)間: <250ms (0~90%) 輸出負(fù)載能力: <10mA for voltage mode <10V for current mode 輸出漣波: <0.1% F.S. 歸零調(diào)整范圍: 0~±5% F.S. 最大值調(diào)整范圍: 0~±10% F.S. 溫度系數(shù): 100ppm/℃ (0~50℃) 隔離特性: INPUT/Output/Power/Case 絕緣抗阻: >100Mohm with 500V DC 絕緣耐壓能力: 2KVac/1 min. (INPUT/output/power) 行動(dòng)測(cè)試: ANSI C37.90a/1974,DIN-IEC 255-4 impulse voltage 5KV (1.2 x 50us) 突波測(cè)試: 2.5KV-0.25ms/1MHz 使用環(huán)境條件: -20~60℃(20 to 90% RH non-condensed) 存放環(huán)境條件: -30~70℃(20 to 90% RH non-condensed) CE認(rèn)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(biāo)簽： 交流電壓 電流轉(zhuǎn)換器
上傳時(shí)間： 2013-11-09
上傳用戶：非衣2016
電路連接 由于數(shù)碼管品種多樣，還有共陰共陽的，下面我們使用一個(gè)數(shù)碼管段碼生成器（在文章結(jié)尾） 去解決不同數(shù)碼管的問題： 本例作者利用手頭現(xiàn)有的一位不知品牌的共陽數(shù)碼管：型號(hào)D5611 A/B，在Eagle 找了一個(gè) 類似的型號(hào)SA56-11，引腳功能一樣可以直接代換。所以下面電路圖使用SA56-11 做引腳說明。 注意： 1. 將數(shù)碼管的a~g 段，分別接到Arduino 的D0~D6 上面。如果你手上的數(shù)碼管未知的話，可以通過通電測(cè)量它哪個(gè)引腳對(duì)應(yīng)哪個(gè)字段，然后找出a~g 即可。 2. 分清共陰還是共陽。共陰的話，接220Ω電阻到電源負(fù)極；共陽的話，接220Ω電阻到電源+5v。 3. 220Ω電阻視數(shù)碼管實(shí)際工作亮度與手頭現(xiàn)有原件而定，不一定需要準(zhǔn)確。 4. 按下按鈕即停。 源代碼 由于我是按照段碼生成器默認(rèn)接法接的，所以不用修改段碼生成器了，直接在段碼生成器選擇共陽極，再按“自動(dòng)”生成數(shù)組就搞定。 下面是源代碼，由于偷懶不用寫循環(huán)，使用了部分AVR 語句。 PORTD 這個(gè)是AVR 的端口輸出控制語句，8 位對(duì)應(yīng)D7~D0，PORTD=00001001 就是D3 和D0 是高電平。 PORTD = a;就是找出相應(yīng)的段碼輸出到D7~D0。 DDRD 這個(gè)是AVR 語句中控制引腳作為輸出/輸入的語句。DDRD = 0xFF;就是D0~D7 全部 作為輸出腳了。 ARDUINO CODECOPY /* Arduino 單數(shù)碼管骰子 Ansifa 2011-12-28 */ //定義段碼表，表中十個(gè)元素由LED 段碼生成器生成，選擇了共陽極。 inta[10] = {0xC0, 0xF9, 0xA4, 0xB0, 0x99, 0x92, 0x82, 0xF8, 0x80, 0x90}; voidsetup() { DDRD = 0xFF; //AVR 定義PortD 的低七位全部用作輸出使用。即0xFF=B11111111對(duì) 應(yīng)D7~D0 pinMode(12, INPUT); //D12用來做骰子暫停的開關(guān) } voidloop() { for(int i = 0; i < 10; i++) { //將段碼輸出PortD 的低7位，即Arduino 的引腳D0~D6，這樣需要取出PORTD 最高位，即 D7的狀態(tài)，與段碼相加，之后再輸出。 PORTD = a[i]; delay(50); //延時(shí)50ms while(digitalRead(12)) {} //如果D12引腳高電平，則在此死循環(huán),暫停LED 跑 動(dòng) } }
標(biāo)簽： Arduino 10 數(shù)碼管 實(shí)驗(yàn)
上傳時(shí)間： 2013-10-15
上傳用戶：baitouyu
特點(diǎn)： 精確度0.1%滿刻度 可作各式數(shù)學(xué)演算式功能如:A+B/A-B/AxB/A/B/A&B(Hi or Lo)/|A|/ 16 BIT類比輸出功能 輸入與輸出絕緣耐壓2仟伏特/1分鐘(INPUT/output/power) 寬范圍交直流兩用電源設(shè)計(jì) 尺寸小,穩(wěn)定性高
標(biāo)簽： 微電腦 數(shù)學(xué)演算 隔離傳送器
上傳時(shí)間： 2014-12-23
上傳用戶：ydd3625
The MAX5713/MAX5714/MAX5715 4-channel, low-power,8-/10-/12-bit, voltage-output digital-to-analog converters(DACs) include output buffers and an internal referencethat is selectable to be 2.048V, 2.500V, or 4.096V. TheMAX5713/MAX5714/MAX5715 accept a wide supplyvoltage range of 2.7V to 5.5V with extremely low power(3mW) consumption to accommodate most low-voltageapplications. A precision external reference INPUT allowsrail-to-rail operation and presents a 100kI (typ) load toan external reference.
標(biāo)簽： MAX 5713 5715 數(shù)據(jù)資料
上傳時(shí)間： 2013-12-23
上傳用戶：ArmKing88
The MAX17600–MAX17605 devices are high-speedMOSFET drivers capable of sinking /sourcing 4A peakcurrents. The devices have various inverting and noninvertingpart options that provide greater flexibility incontrolling the MOSFET. The devices have internal logiccircuitry that prevents shoot-through during output-statchanges. The logic INPUTs are protected against voltagespikes up to +14V, regardless of VDD voltage. Propagationdelay time is minimized and matched between the dualchannels. The devices have very fast switching time,combined with short propagation delays (12ns typ),making them ideal for high-frequency circuits. Thedevices operate from a +4V to +14V single powersupply and typically consume 1mA of supply current.The MAX17600/MAX17601 have standard TTLINPUT logic levels, while the MAX17603 /MAX17604/MAX17605 have CMOS-like high-noise margin (HNM)INPUT logic levels. The MAX17600/MAX17603 are dualinverting INPUT drivers, the MAX17601/MAX17604 aredual noninverting INPUT drivers, and the MAX17602 /MAX17605 devices have one noninverting and oneinverting INPUT. These devices are provided with enablepins (ENA, ENB) for better control of driver operation.
標(biāo)簽： 17600 MAX 數(shù)據(jù)資料
上傳時(shí)間： 2013-12-20
上傳用戶：zhangxin
A MEMS microphone IC is unique among Analog Devices, Inc., products in that its INPUT is an acoustic pressure wave. For this reason, some specifications included in the data sheets for these parts may not be familiar, or familiar specifications may be applied in unfamiliar ways. This application note explains the specifica-tions and terms found in MEMS microphone data sheets so that the microphone can be appropriately designed into a system.
標(biāo)簽： MEMS 麥克風(fēng) 系統(tǒng)設(shè)計(jì) 效率
上傳時(shí)間： 2013-10-31
上傳用戶：masochism
The purpose of this application note is to show an example of how a digital potentiometer can be used in thefeedback loop of a step-up DC-DC converter to provide calibration and/or adjustment of the output voltage.The example circuit uses a MAX5025 step-up DC-DC converter (capable of generating up to 36V,120mWmax) in conjunction with a DS1845, 256 position, NV digital potentiometer. For this example, the desiredoutput voltage is 32V, which is generated from an INPUT supply of 5V. The output voltage can be adjusted in35mV increments (near 32V) and span a range wide enough to account for resistance, potentiometer and DCDCconverter tolerances (27.6V to 36.7V).
標(biāo)簽： DC-DC 數(shù)字電位器 升壓型 校準(zhǔn)
上傳時(shí)間： 2014-12-23
上傳用戶：781354052
The LTC®1966 is a true RMS-to-DC converter that uses aDS computational technique to make it dramatically simplerto use, significantly more accurate, lower in powerconsumption and more flexible than conventional logantilogRMS-to-DC converters. The LTC1966 RMS-to-DCconverter has an INPUT signal range from 5mVRMS to1.5VRMS (a 50dB dynamic range with a single 5V supplyrail) and a 3dB bandwidth of 800kHz with signal crestfactors up to four.
標(biāo)簽： 真有效值 轉(zhuǎn)換器 自動(dòng)調(diào)節(jié)
上傳時(shí)間： 2013-10-12
上傳用戶：qilin
The LT®6552 is a specialized dual-differencing 75MHzoperational amplifier ideal for rejecting common modenoise as a video line receiver. The INPUT pairs are designedto operate with equal but opposite large-signal differencesand provide exceptional high frequency commonmode rejection (CMRR of 65dB at 10MHz), therebyforming an extremely versatile gain block structure thatminimizes component count in most situations. The dualINPUT pairs are free to take on independent common modelevels, while the two voltage differentials are summedinternally to form a net INPUT signal.
上傳時(shí)間： 2014-12-23
上傳用戶：13691535575
Abstract: Transimpedance amplifiers (TIAs) are widely used to translate the current output of sensors like photodiode-to-voltagesignals, since several circuits and instruments can only accept voltage INPUT. An operational amplifier with a feedback resistor fromoutput to the inverting INPUT is the most straightforward implementation of such a TIA. However, even this simple TIA circuit requirescareful trade-offs among noise gain, offset voltage, bandwidth, and stability. Clearly stability in a TIA is essential for good, reliableperformance. This application note explains the empirical calculations for assessing stability and then shows how to fine-tune theselection of the feedback phase-compensation capacitor.
標(biāo)簽： Transimpedance Stabilize Amplifier Your
上傳時(shí)間： 2013-11-13
上傳用戶：daoyue
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