·[ARRL.無(wú)線電通訊手冊(cè)].The.Arrl.Handbook.For.Radio.Communications.-.2005Introduction to the CD-ROM EditionThe ARRL Handbook For Radio CommunicationsThis Version 9.0 of the ARRL Handbook CD-ROM contaINS the co
標(biāo)簽： Communications Handbook Radio ARRL
上傳時(shí)間： 2013-04-24
上傳用戶：SimonQQ
·詳細(xì)說(shuō)明：C++寫(xiě)的DTMF算法，內(nèi)含一個(gè)pcm數(shù)據(jù)文件，讀入文件并分析按鍵-c writes the DTMF algorithm, contaINS a pcm data file, the read-in document and the analysis pressed key。文件列表: DTMF ....\DTMF.cpp ....\DTMF.
上傳時(shí)間： 2013-04-24
上傳用戶：Miyuki
·詳細(xì)說(shuō)明：ATMEL mp3+u盤(pán) 方案，包含SCH,PCB圖，源代碼等-ATMEL mp3 the u plate plan, contaINS SCH, the PCB chart, the source code and so on 文件列表: mp3+u盤(pán) .......\MP3_1_10-13.zip .......\MP3_manual.doc
上傳時(shí)間： 2013-07-02
上傳用戶：498732662
A tutorial on SAR type A/D converters, this note contaINS detailed information on several 12-bit circuits. Comparator, clocking, and preamplifier designs are discussed. A final circuit gives a 12-bit conversion in 1.8µs. Appended sections explain the basic SAR technique and explore D/A considerations.
標(biāo)簽： 逐次逼近 AD轉(zhuǎn)換器
上傳時(shí)間： 2014-01-21
上傳用戶：釣鰲牧馬
The CN3052A is a complete constant-current /constant voltage linear charger for single cell Li-ion and Li Polymer rechargeable batteries. The device contaINS an on-chip power MOSFET and eliminates the need for the external sense resistor and blocking diode.
上傳時(shí)間： 2013-11-10
上傳用戶：子虛烏有
Avalanche photo diode (APD) receiver modules arewidely used in fi ber optic communication systems. AnAPD module contaINS the APD and a signal conditioningamplifi er, but is not completely self contained. It stillrequires signifi cant support circuitry including a highvoltage, low noise power supply and a precision currentmonitor to indicate the signal strength. The challenge issqueezing this support circuitry into applications withlimited board space. The LT®3482 addresses this challengeby integrating a monolithic DC/DC step-up converter andan accurate current monitor. The LT3482 can supportup to a 90V APD bias voltage, and the current monitorprovides better than 10% accuracy over four decades ofdynamic range (250nA to 2.5mA).
上傳時(shí)間： 2014-01-18
上傳用戶：wenyuoo
Avalanche photodiodes (APDs) are widely utilized in laserbased fiberoptic systems to convert optical data intoelectrical form. The APD is usually packaged with a signalconditioning amplifier in a small module. An APD receivermodule and attendant circuitry appears in Figure 1. TheAPD module (figure right) contaINS the APD and a transimpedance(e.g., current-to-voltage) amplifier. An opticalport permits interfacing fiberoptic cable to the APD’sphotosensitive portion. The module’s compact constructionfacilitates a direct, low loss connection between theAPD and the amplifier, necessary because of the extremelyhigh speed data rates involved
標(biāo)簽： 雪崩 光電二極管 偏置電壓 電流檢測(cè)電路
上傳時(shí)間： 2013-10-25
上傳用戶：brain kung
In an increasing trend, telecommunications, networking,audio and instrumentation require low noise power supplies.In particular, there is interest in low noise, lowdropout linear regulators (LDO). These components powernoise-sensitive circuitry, circuitry that contaINS noisesensitiveelements or both. Additionally, to conserve power,particularly in battery driven apparatus such as cellulartelephones, the regulators must operate with low input-tooutputvoltages.1 Devices presently becoming availablemeet these requirements (see separate section, “A Familyof 20mVRMS Noise, Low Dropout Regulators”).
標(biāo)簽： 低噪聲 低壓差穩(wěn)壓器 性能
上傳時(shí)間： 2013-10-30
上傳用戶：yeling1919
Demonstration circuit 1562A is an engineering toolto design and evaluate the LTC699X-X family ofTimerBlox circuits. The center section of the boardcontaINS a pre-configured TimerBlox function.DC1562A comes in twelve timing function variationsas outlined in Table 1.Surrounding the center board is a ”playground”prototyping area. The prototyping area has padsfor Dip-8, S8, MS8, or S6 packages with breadboarding connections to each pin and two convenientpower buses and ground bus surrounding theentire area. This area is for conditioning signals tocontrol the timer function and for adding loads controlled in time.
標(biāo)簽： 6994 LTC PCB 參考設(shè)計(jì)
上傳時(shí)間： 2013-10-18
上傳用戶：如果你也聽(tīng)說(shuō)
數(shù)字信號(hào)處理器dsPIC33F集多通道高精度A/D轉(zhuǎn)換、多通訊模式、看門(mén)狗、CMOS Flash技術(shù)等于一體，其內(nèi)部可完成所有數(shù)據(jù)操作，實(shí)現(xiàn)總線不出芯片技術(shù)。將該處理器應(yīng)用于微機(jī)保護(hù)裝置，提出基于dsPIC33F微處理器的微機(jī)保護(hù)裝置的設(shè)計(jì)方案，給出相應(yīng)的接口電路與軟件流程。該設(shè)計(jì)方案結(jié)構(gòu)簡(jiǎn)單，性價(jià)比及可靠性高，開(kāi)發(fā)周期短，具有一定的實(shí)用推廣價(jià)值。所研制的微機(jī)保護(hù)裝置現(xiàn)場(chǎng)運(yùn)行效果良好。 Abstract: The dsPIC33F microprocessor has a plentiful interior resource which contaINS multi-channel，high precision A/D converters，multi-communication module，watchdog，CMOS Flash technology，and so on.All data manipulations is accomplished interiorly.What is more，it makes the technology that bus does not go beyond the chip comes into practice.The paper put forwards a design scheme based on dsPIC33F microprocessor.The scheme has the advantages of simple structure，high reliability and shortened exploitation cycle.What is more，it has definite practicality and reference.The microcomputer protection device has been put into operation with excellent effects.
上傳時(shí)間： 2013-11-16
上傳用戶：開(kāi)懷常笑
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